./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.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_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/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_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/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_0c1c6c7f-e051-431c-b1b6-4fca74961d63/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 3db5e6ee1090a5741e563a010c3676d5357df7fec89fabe5a888b2d307357a0e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:10:08,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:10:08,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:10:08,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:10:08,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:10:08,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:10:08,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:10:08,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:10:08,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:10:08,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:10:08,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:10:08,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:10:08,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:10:08,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:10:08,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:10:08,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:10:08,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:10:08,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:10:08,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:10:08,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:10:08,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:10:08,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:10:08,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:10:08,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:10:08,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:10:08,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:10:08,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:10:08,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:10:08,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:10:08,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:10:08,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:10:08,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:10:08,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:10:08,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:10:08,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:10:08,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:10:08,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:10:08,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:10:08,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:10:08,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:10:08,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:10:08,860 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-21 01:10:08,903 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:10:08,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:10:08,910 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:10:08,910 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:10:08,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:10:08,911 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:10:08,912 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:10:08,912 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:10:08,912 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:10:08,912 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:10:08,914 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:10:08,914 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:10:08,914 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:10:08,914 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:10:08,915 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:10:08,915 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:10:08,915 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:10:08,915 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:10:08,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 01:10:08,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 01:10:08,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:10:08,917 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:10:08,917 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:10:08,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:10:08,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:10:08,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:10:08,919 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 01:10:08,920 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 01:10:08,920 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 01:10:08,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:10:08,921 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 01:10:08,921 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:10:08,921 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:10:08,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:10:08,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:10:08,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:10:08,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:10:08,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:10:08,923 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:10:08,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:10:08,923 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:10:08,923 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:10:08,923 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_0c1c6c7f-e051-431c-b1b6-4fca74961d63/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3db5e6ee1090a5741e563a010c3676d5357df7fec89fabe5a888b2d307357a0e [2021-11-21 01:10:09,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:10:09,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:10:09,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:10:09,240 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:10:09,241 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:10:09,243 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i [2021-11-21 01:10:09,347 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/data/d5ae4dbf3/94e9eda2c82a48cb9f4492480cbd5d45/FLAGba994dc78 [2021-11-21 01:10:10,213 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:10:10,213 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i [2021-11-21 01:10:10,260 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/data/d5ae4dbf3/94e9eda2c82a48cb9f4492480cbd5d45/FLAGba994dc78 [2021-11-21 01:10:10,344 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/data/d5ae4dbf3/94e9eda2c82a48cb9f4492480cbd5d45 [2021-11-21 01:10:10,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:10:10,350 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:10:10,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:10:10,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:10:10,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:10:10,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:10:10" (1/1) ... [2021-11-21 01:10:10,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44fcb335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:10:10, skipping insertion in model container [2021-11-21 01:10:10,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:10:10" (1/1) ... [2021-11-21 01:10:10,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:10:10,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:10:11,220 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_0c1c6c7f-e051-431c-b1b6-4fca74961d63/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i[33022,33035] [2021-11-21 01:10:11,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:10:11,648 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) [2021-11-21 01:10:11,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@69462553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:10:11, skipping insertion in model container [2021-11-21 01:10:11,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:10:11,649 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-21 01:10:11,652 INFO L158 Benchmark]: Toolchain (without parser) took 1300.20ms. Allocated memory is still 111.1MB. Free memory was 75.4MB in the beginning and 66.7MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:10:11,653 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 111.1MB. Free memory is still 64.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:10:11,654 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1291.88ms. Allocated memory is still 111.1MB. Free memory was 75.1MB in the beginning and 67.2MB in the end (delta: 8.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:10:11,656 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 111.1MB. Free memory is still 64.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1291.88ms. Allocated memory is still 111.1MB. Free memory was 75.1MB in the beginning and 67.2MB in the end (delta: 8.0MB). Peak memory consumption was 10.5MB. 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_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/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_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/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_0c1c6c7f-e051-431c-b1b6-4fca74961d63/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 3db5e6ee1090a5741e563a010c3676d5357df7fec89fabe5a888b2d307357a0e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:10:14,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:10:14,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:10:14,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:10:14,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:10:14,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:10:14,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:10:14,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:10:14,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:10:14,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:10:14,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:10:14,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:10:14,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:10:14,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:10:14,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:10:14,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:10:14,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:10:14,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:10:14,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:10:14,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:10:14,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:10:14,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:10:14,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:10:14,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:10:14,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:10:14,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:10:14,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:10:14,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:10:14,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:10:14,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:10:14,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:10:14,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:10:14,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:10:14,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:10:14,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:10:14,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:10:14,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:10:14,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:10:14,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:10:14,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:10:14,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:10:14,519 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-21 01:10:14,594 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:10:14,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:10:14,595 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:10:14,596 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:10:14,597 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:10:14,597 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:10:14,598 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:10:14,598 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:10:14,598 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:10:14,599 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:10:14,600 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:10:14,601 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:10:14,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 01:10:14,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 01:10:14,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:10:14,604 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:10:14,604 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:10:14,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:10:14,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:10:14,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:10:14,606 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 01:10:14,606 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 01:10:14,606 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 01:10:14,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:10:14,607 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 01:10:14,607 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:10:14,608 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:10:14,608 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:10:14,609 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:10:14,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:10:14,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:10:14,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:10:14,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:10:14,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:10:14,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:10:14,611 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:10:14,612 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:10:14,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:10:14,612 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:10:14,613 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_0c1c6c7f-e051-431c-b1b6-4fca74961d63/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3db5e6ee1090a5741e563a010c3676d5357df7fec89fabe5a888b2d307357a0e [2021-11-21 01:10:15,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:10:15,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:10:15,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:10:15,104 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:10:15,105 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:10:15,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i [2021-11-21 01:10:15,196 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/data/1c2a6b801/96225d8e90e64fafbb389c406eeb9536/FLAG7ba376e95 [2021-11-21 01:10:16,115 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:10:16,116 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i [2021-11-21 01:10:16,147 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/data/1c2a6b801/96225d8e90e64fafbb389c406eeb9536/FLAG7ba376e95 [2021-11-21 01:10:16,184 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/data/1c2a6b801/96225d8e90e64fafbb389c406eeb9536 [2021-11-21 01:10:16,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:10:16,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:10:16,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:10:16,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:10:16,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:10:16,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:10:16" (1/1) ... [2021-11-21 01:10:16,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bc8e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:10:16, skipping insertion in model container [2021-11-21 01:10:16,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:10:16" (1/1) ... [2021-11-21 01:10:16,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:10:16,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:10:17,037 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_0c1c6c7f-e051-431c-b1b6-4fca74961d63/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i[33022,33035] [2021-11-21 01:10:17,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:10:17,395 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-21 01:10:17,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:10:17,479 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_0c1c6c7f-e051-431c-b1b6-4fca74961d63/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i[33022,33035] [2021-11-21 01:10:17,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:10:17,747 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:10:17,800 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_0c1c6c7f-e051-431c-b1b6-4fca74961d63/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i[33022,33035] [2021-11-21 01:10:18,016 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:10:18,107 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:10:18,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:10:18 WrapperNode [2021-11-21 01:10:18,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:10:18,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:10:18,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:10:18,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:10:18,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:10:18" (1/1) ... [2021-11-21 01:10:18,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:10:18" (1/1) ... [2021-11-21 01:10:18,395 INFO L137 Inliner]: procedures = 180, calls = 575, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2348 [2021-11-21 01:10:18,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:10:18,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:10:18,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:10:18,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:10:18,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:10:18" (1/1) ... [2021-11-21 01:10:18,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:10:18" (1/1) ... [2021-11-21 01:10:18,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:10:18" (1/1) ... [2021-11-21 01:10:18,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:10:18" (1/1) ... [2021-11-21 01:10:18,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:10:18" (1/1) ... [2021-11-21 01:10:18,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:10:18" (1/1) ... [2021-11-21 01:10:18,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:10:18" (1/1) ... [2021-11-21 01:10:18,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:10:18,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:10:18,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:10:18,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:10:18,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:10:18" (1/1) ... [2021-11-21 01:10:18,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:10:18,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:10:18,731 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:10:18,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:10:18,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-21 01:10:18,795 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-21 01:10:18,795 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-21 01:10:18,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 01:10:18,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:10:18,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:10:18,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:10:18,796 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:10:18,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:10:18,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:10:18,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:10:18,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:10:18,798 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 01:10:18,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:10:18,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:10:18,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-21 01:10:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:10:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:10:18,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:10:19,279 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:10:19,281 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:10:19,286 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 01:10:31,314 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:10:31,338 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:10:31,339 INFO L301 CfgBuilder]: Removed 160 assume(true) statements. [2021-11-21 01:10:31,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:10:31 BoogieIcfgContainer [2021-11-21 01:10:31,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:10:31,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:10:31,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:10:31,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:10:31,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:10:16" (1/3) ... [2021-11-21 01:10:31,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b64ed3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:10:31, skipping insertion in model container [2021-11-21 01:10:31,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:10:18" (2/3) ... [2021-11-21 01:10:31,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b64ed3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:10:31, skipping insertion in model container [2021-11-21 01:10:31,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:10:31" (3/3) ... [2021-11-21 01:10:31,355 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test10-2.i [2021-11-21 01:10:31,361 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:10:31,361 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1095 error locations. [2021-11-21 01:10:31,414 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:10:31,422 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 [2021-11-21 01:10:31,422 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1095 error locations. [2021-11-21 01:10:31,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 2259 states, 1152 states have (on average 2.2144097222222223) internal successors, (2551), 2245 states have internal predecessors, (2551), 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) [2021-11-21 01:10:31,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-21 01:10:31,540 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:10:31,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-21 01:10:31,541 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:10:31,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:10:31,549 INFO L85 PathProgramCache]: Analyzing trace with hash 66598, now seen corresponding path program 1 times [2021-11-21 01:10:31,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:10:31,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549114024] [2021-11-21 01:10:31,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:10:31,565 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:10:31,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:10:31,569 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:10:31,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:10:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:10:31,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:10:31,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:10:32,040 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 [2021-11-21 01:10:32,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:10:32,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:10:32,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:10:32,102 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:10:32,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549114024] [2021-11-21 01:10:32,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549114024] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:10:32,114 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:10:32,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:10:32,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383163192] [2021-11-21 01:10:32,118 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:10:32,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:10:32,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:10:32,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:10:32,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:10:32,176 INFO L87 Difference]: Start difference. First operand has 2259 states, 1152 states have (on average 2.2144097222222223) internal successors, (2551), 2245 states have internal predecessors, (2551), 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) [2021-11-21 01:10:38,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:10:38,310 INFO L93 Difference]: Finished difference Result 2934 states and 3120 transitions. [2021-11-21 01:10:38,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:10:38,313 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 [2021-11-21 01:10:38,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:10:38,366 INFO L225 Difference]: With dead ends: 2934 [2021-11-21 01:10:38,367 INFO L226 Difference]: Without dead ends: 2932 [2021-11-21 01:10:38,369 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 [2021-11-21 01:10:38,374 INFO L933 BasicCegarLoop]: 1394 mSDtfsCounter, 2142 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2152 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:10:38,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2152 Valid, 1869 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2021-11-21 01:10:38,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2021-11-21 01:10:38,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 2401. [2021-11-21 01:10:38,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2401 states, 1318 states have (on average 2.0515933232169954) internal successors, (2704), 2385 states have internal predecessors, (2704), 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) [2021-11-21 01:10:38,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2401 states to 2401 states and 2736 transitions. [2021-11-21 01:10:38,610 INFO L78 Accepts]: Start accepts. Automaton has 2401 states and 2736 transitions. Word has length 3 [2021-11-21 01:10:38,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:10:38,610 INFO L470 AbstractCegarLoop]: Abstraction has 2401 states and 2736 transitions. [2021-11-21 01:10:38,611 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) [2021-11-21 01:10:38,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2401 states and 2736 transitions. [2021-11-21 01:10:38,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-21 01:10:38,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:10:38,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-21 01:10:38,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:10:38,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:10:38,828 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:10:38,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:10:38,832 INFO L85 PathProgramCache]: Analyzing trace with hash 66599, now seen corresponding path program 1 times [2021-11-21 01:10:38,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:10:38,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619805592] [2021-11-21 01:10:38,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:10:38,834 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:10:38,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:10:38,836 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:10:38,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:10:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:10:39,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:10:39,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:10:39,106 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 [2021-11-21 01:10:39,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:10:39,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:10:39,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:10:39,203 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:10:39,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619805592] [2021-11-21 01:10:39,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619805592] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:10:39,205 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:10:39,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-21 01:10:39,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942590466] [2021-11-21 01:10:39,206 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:10:39,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:10:39,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:10:39,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:10:39,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:10:39,212 INFO L87 Difference]: Start difference. First operand 2401 states and 2736 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) [2021-11-21 01:10:52,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:10:52,669 INFO L93 Difference]: Finished difference Result 3701 states and 4147 transitions. [2021-11-21 01:10:52,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:10:52,671 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 [2021-11-21 01:10:52,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:10:52,702 INFO L225 Difference]: With dead ends: 3701 [2021-11-21 01:10:52,703 INFO L226 Difference]: Without dead ends: 3701 [2021-11-21 01:10:52,703 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 [2021-11-21 01:10:52,705 INFO L933 BasicCegarLoop]: 1682 mSDtfsCounter, 2670 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 2313 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2678 SdHoareTripleChecker+Valid, 3520 SdHoareTripleChecker+Invalid, 2336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:10:52,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2678 Valid, 3520 Invalid, 2336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2313 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2021-11-21 01:10:52,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3701 states. [2021-11-21 01:10:52,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3701 to 2565. [2021-11-21 01:10:52,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2565 states, 1494 states have (on average 2.038821954484605) internal successors, (3046), 2549 states have internal predecessors, (3046), 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) [2021-11-21 01:10:52,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 3078 transitions. [2021-11-21 01:10:52,820 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 3078 transitions. Word has length 3 [2021-11-21 01:10:52,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:10:52,821 INFO L470 AbstractCegarLoop]: Abstraction has 2565 states and 3078 transitions. [2021-11-21 01:10:52,821 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) [2021-11-21 01:10:52,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 3078 transitions. [2021-11-21 01:10:52,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 01:10:52,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:10:52,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:10:52,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:10:53,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:10:53,037 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:10:53,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:10:53,038 INFO L85 PathProgramCache]: Analyzing trace with hash -305791726, now seen corresponding path program 1 times [2021-11-21 01:10:53,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:10:53,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2028952678] [2021-11-21 01:10:53,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:10:53,040 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:10:53,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:10:53,045 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:10:53,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 01:10:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:10:53,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:10:53,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:10:53,325 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 [2021-11-21 01:10:53,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:10:53,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:10:53,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:10:53,384 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:10:53,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2028952678] [2021-11-21 01:10:53,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2028952678] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:10:53,385 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:10:53,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:10:53,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978878808] [2021-11-21 01:10:53,386 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:10:53,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:10:53,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:10:53,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:10:53,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:10:53,388 INFO L87 Difference]: Start difference. First operand 2565 states and 3078 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) [2021-11-21 01:10:58,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:10:58,005 INFO L93 Difference]: Finished difference Result 3303 states and 3816 transitions. [2021-11-21 01:10:58,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:10:58,006 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 [2021-11-21 01:10:58,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:10:58,028 INFO L225 Difference]: With dead ends: 3303 [2021-11-21 01:10:58,028 INFO L226 Difference]: Without dead ends: 3303 [2021-11-21 01:10:58,029 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 [2021-11-21 01:10:58,030 INFO L933 BasicCegarLoop]: 2161 mSDtfsCounter, 1987 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:10:58,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1997 Valid, 2909 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-21 01:10:58,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3303 states. [2021-11-21 01:10:58,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3303 to 2474. [2021-11-21 01:10:58,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 1494 states have (on average 1.9551539491298529) internal successors, (2921), 2458 states have internal predecessors, (2921), 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) [2021-11-21 01:10:58,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 2953 transitions. [2021-11-21 01:10:58,111 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 2953 transitions. Word has length 8 [2021-11-21 01:10:58,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:10:58,112 INFO L470 AbstractCegarLoop]: Abstraction has 2474 states and 2953 transitions. [2021-11-21 01:10:58,112 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) [2021-11-21 01:10:58,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 2953 transitions. [2021-11-21 01:10:58,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 01:10:58,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:10:58,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:10:58,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-21 01:10:58,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:10:58,328 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:10:58,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:10:58,331 INFO L85 PathProgramCache]: Analyzing trace with hash -305791725, now seen corresponding path program 1 times [2021-11-21 01:10:58,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:10:58,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167985133] [2021-11-21 01:10:58,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:10:58,334 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:10:58,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:10:58,336 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:10:58,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-21 01:10:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:10:58,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:10:58,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:10:58,619 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 [2021-11-21 01:10:58,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:10:58,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:10:58,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:10:58,794 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:10:58,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167985133] [2021-11-21 01:10:58,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167985133] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:10:58,795 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:10:58,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-21 01:10:58,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312712541] [2021-11-21 01:10:58,796 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:10:58,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:10:58,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:10:58,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:10:58,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:10:58,799 INFO L87 Difference]: Start difference. First operand 2474 states and 2953 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) [2021-11-21 01:11:11,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:11:11,135 INFO L93 Difference]: Finished difference Result 3429 states and 3844 transitions. [2021-11-21 01:11:11,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:11:11,136 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 [2021-11-21 01:11:11,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:11:11,159 INFO L225 Difference]: With dead ends: 3429 [2021-11-21 01:11:11,159 INFO L226 Difference]: Without dead ends: 3429 [2021-11-21 01:11:11,160 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 [2021-11-21 01:11:11,165 INFO L933 BasicCegarLoop]: 2491 mSDtfsCounter, 1441 mSDsluCounter, 2164 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 4655 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:11:11,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1447 Valid, 4655 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2021-11-21 01:11:11,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3429 states. [2021-11-21 01:11:11,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3429 to 2466. [2021-11-21 01:11:11,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 1496 states have (on average 1.9391711229946524) internal successors, (2901), 2450 states have internal predecessors, (2901), 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) [2021-11-21 01:11:11,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 2933 transitions. [2021-11-21 01:11:11,259 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 2933 transitions. Word has length 8 [2021-11-21 01:11:11,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:11:11,260 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 2933 transitions. [2021-11-21 01:11:11,260 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) [2021-11-21 01:11:11,261 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 2933 transitions. [2021-11-21 01:11:11,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:11:11,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:11:11,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:11:11,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:11:11,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:11:11,478 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr658REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:11:11,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:11:11,478 INFO L85 PathProgramCache]: Analyzing trace with hash -690352907, now seen corresponding path program 1 times [2021-11-21 01:11:11,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:11:11,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340486050] [2021-11-21 01:11:11,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:11:11,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:11:11,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:11:11,480 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:11:11,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 01:11:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:11:11,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:11:11,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:11:11,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:11:11,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:11:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:11:11,742 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:11:11,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340486050] [2021-11-21 01:11:11,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340486050] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:11:11,743 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:11:11,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 01:11:11,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617048810] [2021-11-21 01:11:11,743 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:11:11,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:11:11,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:11:11,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:11:11,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:11:11,745 INFO L87 Difference]: Start difference. First operand 2466 states and 2933 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) [2021-11-21 01:11:11,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:11:11,806 INFO L93 Difference]: Finished difference Result 2424 states and 2890 transitions. [2021-11-21 01:11:11,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:11:11,806 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 [2021-11-21 01:11:11,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:11:11,822 INFO L225 Difference]: With dead ends: 2424 [2021-11-21 01:11:11,822 INFO L226 Difference]: Without dead ends: 2424 [2021-11-21 01:11:11,822 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 [2021-11-21 01:11:11,823 INFO L933 BasicCegarLoop]: 2210 mSDtfsCounter, 1006 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 4630 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 [2021-11-21 01:11:11,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1010 Valid, 4630 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:11:11,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2021-11-21 01:11:11,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2424. [2021-11-21 01:11:11,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 1478 states have (on average 1.9336941813261164) internal successors, (2858), 2408 states have internal predecessors, (2858), 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) [2021-11-21 01:11:11,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 2890 transitions. [2021-11-21 01:11:11,886 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 2890 transitions. Word has length 11 [2021-11-21 01:11:11,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:11:11,887 INFO L470 AbstractCegarLoop]: Abstraction has 2424 states and 2890 transitions. [2021-11-21 01:11:11,887 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) [2021-11-21 01:11:11,887 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 2890 transitions. [2021-11-21 01:11:11,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 01:11:11,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:11:11,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:11:11,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:11:12,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:11:12,108 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr682REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:11:12,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:11:12,109 INFO L85 PathProgramCache]: Analyzing trace with hash -2004126129, now seen corresponding path program 1 times [2021-11-21 01:11:12,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:11:12,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411627673] [2021-11-21 01:11:12,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:11:12,110 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:11:12,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:11:12,111 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:11:12,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-21 01:11:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:11:12,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:11:12,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:11:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:11:12,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:11:12,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:11:12,451 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:11:12,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411627673] [2021-11-21 01:11:12,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411627673] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:11:12,452 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:11:12,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-21 01:11:12,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301638941] [2021-11-21 01:11:12,452 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:11:12,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:11:12,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:11:12,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:11:12,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:11:12,454 INFO L87 Difference]: Start difference. First operand 2424 states and 2890 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) [2021-11-21 01:11:12,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:11:12,613 INFO L93 Difference]: Finished difference Result 2403 states and 2862 transitions. [2021-11-21 01:11:12,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:11:12,614 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 [2021-11-21 01:11:12,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:11:12,629 INFO L225 Difference]: With dead ends: 2403 [2021-11-21 01:11:12,630 INFO L226 Difference]: Without dead ends: 2403 [2021-11-21 01:11:12,630 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 [2021-11-21 01:11:12,631 INFO L933 BasicCegarLoop]: 2165 mSDtfsCounter, 977 mSDsluCounter, 4578 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 6743 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 [2021-11-21 01:11:12,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [981 Valid, 6743 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:11:12,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2403 states. [2021-11-21 01:11:12,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2403 to 2402. [2021-11-21 01:11:12,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2402 states, 1470 states have (on average 1.9244897959183673) internal successors, (2829), 2386 states have internal predecessors, (2829), 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) [2021-11-21 01:11:12,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 2861 transitions. [2021-11-21 01:11:12,694 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 2861 transitions. Word has length 13 [2021-11-21 01:11:12,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:11:12,695 INFO L470 AbstractCegarLoop]: Abstraction has 2402 states and 2861 transitions. [2021-11-21 01:11:12,695 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) [2021-11-21 01:11:12,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 2861 transitions. [2021-11-21 01:11:12,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 01:11:12,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:11:12,697 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] [2021-11-21 01:11:12,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:11:12,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:11:12,918 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:11:12,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:11:12,919 INFO L85 PathProgramCache]: Analyzing trace with hash 445820063, now seen corresponding path program 1 times [2021-11-21 01:11:12,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:11:12,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223194729] [2021-11-21 01:11:12,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:11:12,921 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:11:12,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:11:12,922 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:11:12,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-21 01:11:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:11:13,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:11:13,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:11:13,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:11:13,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:11:13,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:11:13,283 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:11:13,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223194729] [2021-11-21 01:11:13,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223194729] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:11:13,284 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:11:13,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 01:11:13,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522343994] [2021-11-21 01:11:13,285 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:11:13,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:11:13,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:11:13,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:11:13,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:11:13,287 INFO L87 Difference]: Start difference. First operand 2402 states and 2861 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) [2021-11-21 01:11:13,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:11:13,413 INFO L93 Difference]: Finished difference Result 3878 states and 4485 transitions. [2021-11-21 01:11:13,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:11:13,414 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 [2021-11-21 01:11:13,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:11:13,441 INFO L225 Difference]: With dead ends: 3878 [2021-11-21 01:11:13,441 INFO L226 Difference]: Without dead ends: 3878 [2021-11-21 01:11:13,441 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 [2021-11-21 01:11:13,442 INFO L933 BasicCegarLoop]: 3487 mSDtfsCounter, 4182 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4192 SdHoareTripleChecker+Valid, 5105 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 [2021-11-21 01:11:13,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4192 Valid, 5105 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:11:13,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2021-11-21 01:11:13,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 2360. [2021-11-21 01:11:13,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2360 states, 1452 states have (on average 1.918732782369146) internal successors, (2786), 2344 states have internal predecessors, (2786), 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) [2021-11-21 01:11:13,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 2818 transitions. [2021-11-21 01:11:13,520 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 2818 transitions. Word has length 20 [2021-11-21 01:11:13,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:11:13,521 INFO L470 AbstractCegarLoop]: Abstraction has 2360 states and 2818 transitions. [2021-11-21 01:11:13,521 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) [2021-11-21 01:11:13,521 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 2818 transitions. [2021-11-21 01:11:13,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 01:11:13,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:11:13,523 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] [2021-11-21 01:11:13,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-21 01:11:13,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:11:13,739 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr334REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:11:13,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:11:13,740 INFO L85 PathProgramCache]: Analyzing trace with hash 591123743, now seen corresponding path program 1 times [2021-11-21 01:11:13,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:11:13,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680286400] [2021-11-21 01:11:13,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:11:13,741 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:11:13,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:11:13,744 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:11:13,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-21 01:11:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:11:13,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:11:13,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:11:14,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:11:14,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:11:14,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:11:14,075 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:11:14,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680286400] [2021-11-21 01:11:14,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680286400] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:11:14,075 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:11:14,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 01:11:14,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483954721] [2021-11-21 01:11:14,076 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:11:14,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:11:14,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:11:14,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:11:14,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:11:14,077 INFO L87 Difference]: Start difference. First operand 2360 states and 2818 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) [2021-11-21 01:11:14,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:11:14,161 INFO L93 Difference]: Finished difference Result 3751 states and 4304 transitions. [2021-11-21 01:11:14,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:11:14,162 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 [2021-11-21 01:11:14,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:11:14,186 INFO L225 Difference]: With dead ends: 3751 [2021-11-21 01:11:14,187 INFO L226 Difference]: Without dead ends: 3751 [2021-11-21 01:11:14,187 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 [2021-11-21 01:11:14,188 INFO L933 BasicCegarLoop]: 3395 mSDtfsCounter, 2048 mSDsluCounter, 3136 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 6531 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 [2021-11-21 01:11:14,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2058 Valid, 6531 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:11:14,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3751 states. [2021-11-21 01:11:14,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3751 to 2282. [2021-11-21 01:11:14,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2282 states, 1398 states have (on average 1.9005722460658083) internal successors, (2657), 2266 states have internal predecessors, (2657), 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) [2021-11-21 01:11:14,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 2689 transitions. [2021-11-21 01:11:14,265 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 2689 transitions. Word has length 20 [2021-11-21 01:11:14,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:11:14,266 INFO L470 AbstractCegarLoop]: Abstraction has 2282 states and 2689 transitions. [2021-11-21 01:11:14,266 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) [2021-11-21 01:11:14,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 2689 transitions. [2021-11-21 01:11:14,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 01:11:14,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:11:14,290 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] [2021-11-21 01:11:14,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-21 01:11:14,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:11:14,491 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:11:14,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:11:14,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1063651591, now seen corresponding path program 1 times [2021-11-21 01:11:14,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:11:14,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763673107] [2021-11-21 01:11:14,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:11:14,493 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:11:14,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:11:14,496 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:11:14,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-21 01:11:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:11:14,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:11:14,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:11:14,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:11:14,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:11:14,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:11:14,893 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:11:14,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763673107] [2021-11-21 01:11:14,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [763673107] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:11:14,894 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:11:14,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-21 01:11:14,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104037586] [2021-11-21 01:11:14,895 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:11:14,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:11:14,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:11:14,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:11:14,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:11:14,896 INFO L87 Difference]: Start difference. First operand 2282 states and 2689 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) [2021-11-21 01:11:15,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:11:15,080 INFO L93 Difference]: Finished difference Result 3737 states and 4285 transitions. [2021-11-21 01:11:15,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:11:15,081 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 [2021-11-21 01:11:15,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:11:15,097 INFO L225 Difference]: With dead ends: 3737 [2021-11-21 01:11:15,098 INFO L226 Difference]: Without dead ends: 3737 [2021-11-21 01:11:15,098 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 [2021-11-21 01:11:15,099 INFO L933 BasicCegarLoop]: 3356 mSDtfsCounter, 4028 mSDsluCounter, 4924 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4038 SdHoareTripleChecker+Valid, 8280 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 [2021-11-21 01:11:15,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4038 Valid, 8280 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:11:15,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-11-21 01:11:15,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 2260. [2021-11-21 01:11:15,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2260 states, 1390 states have (on average 1.8906474820143886) internal successors, (2628), 2244 states have internal predecessors, (2628), 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) [2021-11-21 01:11:15,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2260 states to 2260 states and 2660 transitions. [2021-11-21 01:11:15,166 INFO L78 Accepts]: Start accepts. Automaton has 2260 states and 2660 transitions. Word has length 22 [2021-11-21 01:11:15,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:11:15,167 INFO L470 AbstractCegarLoop]: Abstraction has 2260 states and 2660 transitions. [2021-11-21 01:11:15,167 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) [2021-11-21 01:11:15,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2260 states and 2660 transitions. [2021-11-21 01:11:15,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 01:11:15,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:11:15,169 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] [2021-11-21 01:11:15,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-21 01:11:15,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:11:15,384 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr359REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:11:15,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:11:15,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1134259450, now seen corresponding path program 1 times [2021-11-21 01:11:15,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:11:15,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517685799] [2021-11-21 01:11:15,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:11:15,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:11:15,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:11:15,387 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:11:15,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-21 01:11:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:11:15,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:11:15,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:11:15,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:11:15,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:11:15,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:11:15,799 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:11:15,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517685799] [2021-11-21 01:11:15,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517685799] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:11:15,799 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:11:15,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-21 01:11:15,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273721383] [2021-11-21 01:11:15,800 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:11:15,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:11:15,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:11:15,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:11:15,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:11:15,802 INFO L87 Difference]: Start difference. First operand 2260 states and 2660 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) [2021-11-21 01:11:15,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:11:15,950 INFO L93 Difference]: Finished difference Result 3672 states and 4162 transitions. [2021-11-21 01:11:15,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:11:15,951 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 [2021-11-21 01:11:15,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:11:15,963 INFO L225 Difference]: With dead ends: 3672 [2021-11-21 01:11:15,963 INFO L226 Difference]: Without dead ends: 3672 [2021-11-21 01:11:15,963 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 [2021-11-21 01:11:15,964 INFO L933 BasicCegarLoop]: 3502 mSDtfsCounter, 1984 mSDsluCounter, 6561 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1994 SdHoareTripleChecker+Valid, 10063 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 [2021-11-21 01:11:15,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1994 Valid, 10063 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:11:15,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2021-11-21 01:11:16,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 2222. [2021-11-21 01:11:16,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 1366 states have (on average 1.8601756954612005) internal successors, (2541), 2206 states have internal predecessors, (2541), 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) [2021-11-21 01:11:16,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 2573 transitions. [2021-11-21 01:11:16,031 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 2573 transitions. Word has length 22 [2021-11-21 01:11:16,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:11:16,031 INFO L470 AbstractCegarLoop]: Abstraction has 2222 states and 2573 transitions. [2021-11-21 01:11:16,032 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) [2021-11-21 01:11:16,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 2573 transitions. [2021-11-21 01:11:16,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-21 01:11:16,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:11:16,033 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] [2021-11-21 01:11:16,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-21 01:11:16,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:11:16,250 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr696REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:11:16,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:11:16,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519613, now seen corresponding path program 1 times [2021-11-21 01:11:16,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:11:16,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030089336] [2021-11-21 01:11:16,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:11:16,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:11:16,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:11:16,253 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:11:16,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-21 01:11:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:11:16,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:11:16,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:11:16,469 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 [2021-11-21 01:11:16,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:11:16,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:11:16,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:11:16,737 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:11:16,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030089336] [2021-11-21 01:11:16,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030089336] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:11:16,738 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:11:16,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 01:11:16,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731110255] [2021-11-21 01:11:16,738 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:11:16,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:11:16,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:11:16,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:11:16,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:11:16,741 INFO L87 Difference]: Start difference. First operand 2222 states and 2573 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) [2021-11-21 01:11:21,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:11:21,317 INFO L93 Difference]: Finished difference Result 2674 states and 2936 transitions. [2021-11-21 01:11:21,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:11:21,318 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 [2021-11-21 01:11:21,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:11:21,326 INFO L225 Difference]: With dead ends: 2674 [2021-11-21 01:11:21,326 INFO L226 Difference]: Without dead ends: 2674 [2021-11-21 01:11:21,326 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 [2021-11-21 01:11:21,327 INFO L933 BasicCegarLoop]: 1243 mSDtfsCounter, 2729 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 1779 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:11:21,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2735 Valid, 2340 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1779 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-21 01:11:21,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2021-11-21 01:11:21,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2218. [2021-11-21 01:11:21,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2218 states, 1366 states have (on average 1.857247437774524) internal successors, (2537), 2202 states have internal predecessors, (2537), 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) [2021-11-21 01:11:21,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 2569 transitions. [2021-11-21 01:11:21,386 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 2569 transitions. Word has length 27 [2021-11-21 01:11:21,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:11:21,387 INFO L470 AbstractCegarLoop]: Abstraction has 2218 states and 2569 transitions. [2021-11-21 01:11:21,387 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) [2021-11-21 01:11:21,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 2569 transitions. [2021-11-21 01:11:21,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-21 01:11:21,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:11:21,389 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] [2021-11-21 01:11:21,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-21 01:11:21,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:11:21,602 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr697REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:11:21,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:11:21,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519614, now seen corresponding path program 1 times [2021-11-21 01:11:21,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:11:21,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456553035] [2021-11-21 01:11:21,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:11:21,604 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:11:21,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:11:21,605 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:11:21,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-21 01:11:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:11:21,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:11:21,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:11:21,877 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 [2021-11-21 01:11:22,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:11:22,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:11:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:11:22,713 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:11:22,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456553035] [2021-11-21 01:11:22,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456553035] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:11:22,714 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:11:22,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 01:11:22,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377307069] [2021-11-21 01:11:22,715 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:11:22,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:11:22,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:11:22,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:11:22,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:11:22,716 INFO L87 Difference]: Start difference. First operand 2218 states and 2569 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) [2021-11-21 01:11:37,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:11:37,367 INFO L93 Difference]: Finished difference Result 3215 states and 3552 transitions. [2021-11-21 01:11:37,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:11:37,370 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 [2021-11-21 01:11:37,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:11:37,377 INFO L225 Difference]: With dead ends: 3215 [2021-11-21 01:11:37,377 INFO L226 Difference]: Without dead ends: 3215 [2021-11-21 01:11:37,378 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 [2021-11-21 01:11:37,379 INFO L933 BasicCegarLoop]: 1481 mSDtfsCounter, 4179 mSDsluCounter, 3074 mSDsCounter, 0 mSdLazyCounter, 3520 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4179 SdHoareTripleChecker+Valid, 4555 SdHoareTripleChecker+Invalid, 3544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 3520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:11:37,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4179 Valid, 4555 Invalid, 3544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 3520 Invalid, 0 Unknown, 0 Unchecked, 14.5s Time] [2021-11-21 01:11:37,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2021-11-21 01:11:37,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 2251. [2021-11-21 01:11:37,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 1400 states have (on average 1.8385714285714285) internal successors, (2574), 2235 states have internal predecessors, (2574), 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) [2021-11-21 01:11:37,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 2606 transitions. [2021-11-21 01:11:37,441 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 2606 transitions. Word has length 27 [2021-11-21 01:11:37,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:11:37,442 INFO L470 AbstractCegarLoop]: Abstraction has 2251 states and 2606 transitions. [2021-11-21 01:11:37,442 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) [2021-11-21 01:11:37,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 2606 transitions. [2021-11-21 01:11:37,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:11:37,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:11:37,444 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] [2021-11-21 01:11:37,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-21 01:11:37,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:11:37,658 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:11:37,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:11:37,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128551, now seen corresponding path program 1 times [2021-11-21 01:11:37,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:11:37,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113388549] [2021-11-21 01:11:37,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:11:37,659 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:11:37,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:11:37,660 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:11:37,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-21 01:11:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:11:37,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:11:37,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:11:37,975 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 [2021-11-21 01:11:38,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:11:38,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:11:38,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:11:38,271 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:11:38,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113388549] [2021-11-21 01:11:38,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113388549] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:11:38,272 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:11:38,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 01:11:38,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256367805] [2021-11-21 01:11:38,272 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:11:38,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:11:38,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:11:38,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:11:38,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:11:38,274 INFO L87 Difference]: Start difference. First operand 2251 states and 2606 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) [2021-11-21 01:11:45,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:11:45,100 INFO L93 Difference]: Finished difference Result 4335 states and 4885 transitions. [2021-11-21 01:11:45,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:11:45,100 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 [2021-11-21 01:11:45,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:11:45,113 INFO L225 Difference]: With dead ends: 4335 [2021-11-21 01:11:45,113 INFO L226 Difference]: Without dead ends: 4335 [2021-11-21 01:11:45,114 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 [2021-11-21 01:11:45,115 INFO L933 BasicCegarLoop]: 2413 mSDtfsCounter, 4087 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 2785 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4094 SdHoareTripleChecker+Valid, 4520 SdHoareTripleChecker+Invalid, 2828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:11:45,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4094 Valid, 4520 Invalid, 2828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2785 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2021-11-21 01:11:45,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4335 states. [2021-11-21 01:11:45,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4335 to 2247. [2021-11-21 01:11:45,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 1400 states have (on average 1.8357142857142856) internal successors, (2570), 2231 states have internal predecessors, (2570), 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) [2021-11-21 01:11:45,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 2602 transitions. [2021-11-21 01:11:45,177 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 2602 transitions. Word has length 36 [2021-11-21 01:11:45,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:11:45,178 INFO L470 AbstractCegarLoop]: Abstraction has 2247 states and 2602 transitions. [2021-11-21 01:11:45,178 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) [2021-11-21 01:11:45,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 2602 transitions. [2021-11-21 01:11:45,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:11:45,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:11:45,180 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] [2021-11-21 01:11:45,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-21 01:11:45,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:11:45,395 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:11:45,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:11:45,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128552, now seen corresponding path program 1 times [2021-11-21 01:11:45,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:11:45,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501794410] [2021-11-21 01:11:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:11:45,398 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:11:45,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:11:45,399 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:11:45,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-21 01:11:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:11:45,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:11:45,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:11:45,707 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 [2021-11-21 01:11:46,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:11:46,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:11:46,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:11:46,695 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:11:46,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501794410] [2021-11-21 01:11:46,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501794410] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:11:46,695 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:11:46,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 01:11:46,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33518921] [2021-11-21 01:11:46,696 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:11:46,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:11:46,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:11:46,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:11:46,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:11:46,698 INFO L87 Difference]: Start difference. First operand 2247 states and 2602 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) [2021-11-21 01:12:07,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:12:07,137 INFO L93 Difference]: Finished difference Result 4238 states and 4664 transitions. [2021-11-21 01:12:07,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:12:07,139 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 [2021-11-21 01:12:07,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:12:07,152 INFO L225 Difference]: With dead ends: 4238 [2021-11-21 01:12:07,152 INFO L226 Difference]: Without dead ends: 4238 [2021-11-21 01:12:07,152 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 [2021-11-21 01:12:07,153 INFO L933 BasicCegarLoop]: 2733 mSDtfsCounter, 2995 mSDsluCounter, 5218 mSDsCounter, 0 mSdLazyCounter, 5330 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3000 SdHoareTripleChecker+Valid, 7951 SdHoareTripleChecker+Invalid, 5354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 5330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:12:07,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3000 Valid, 7951 Invalid, 5354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 5330 Invalid, 0 Unknown, 0 Unchecked, 20.2s Time] [2021-11-21 01:12:07,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4238 states. [2021-11-21 01:12:07,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4238 to 2243. [2021-11-21 01:12:07,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2243 states, 1400 states have (on average 1.832857142857143) internal successors, (2566), 2227 states have internal predecessors, (2566), 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) [2021-11-21 01:12:07,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 2598 transitions. [2021-11-21 01:12:07,249 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 2598 transitions. Word has length 36 [2021-11-21 01:12:07,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:12:07,249 INFO L470 AbstractCegarLoop]: Abstraction has 2243 states and 2598 transitions. [2021-11-21 01:12:07,250 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) [2021-11-21 01:12:07,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 2598 transitions. [2021-11-21 01:12:07,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:12:07,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:12:07,251 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] [2021-11-21 01:12:07,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-21 01:12:07,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:12:07,471 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr372REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:12:07,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:12:07,472 INFO L85 PathProgramCache]: Analyzing trace with hash -526454297, now seen corresponding path program 1 times [2021-11-21 01:12:07,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:12:07,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462332035] [2021-11-21 01:12:07,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:12:07,473 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:12:07,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:12:07,475 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:12:07,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-21 01:12:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:12:07,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:12:07,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:12:07,783 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 [2021-11-21 01:12:07,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:07,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:12:08,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:08,076 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:12:08,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462332035] [2021-11-21 01:12:08,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462332035] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:12:08,076 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:12:08,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 01:12:08,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119257427] [2021-11-21 01:12:08,077 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:12:08,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:12:08,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:12:08,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:12:08,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:12:08,079 INFO L87 Difference]: Start difference. First operand 2243 states and 2598 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) [2021-11-21 01:12:15,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:12:15,990 INFO L93 Difference]: Finished difference Result 4691 states and 5257 transitions. [2021-11-21 01:12:15,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:12:15,991 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 [2021-11-21 01:12:15,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:12:16,003 INFO L225 Difference]: With dead ends: 4691 [2021-11-21 01:12:16,003 INFO L226 Difference]: Without dead ends: 4691 [2021-11-21 01:12:16,004 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 [2021-11-21 01:12:16,004 INFO L933 BasicCegarLoop]: 2250 mSDtfsCounter, 4653 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 2965 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4663 SdHoareTripleChecker+Valid, 4546 SdHoareTripleChecker+Invalid, 3016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:12:16,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4663 Valid, 4546 Invalid, 3016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2965 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2021-11-21 01:12:16,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4691 states. [2021-11-21 01:12:16,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4691 to 2240. [2021-11-21 01:12:16,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2240 states, 1400 states have (on average 1.825) internal successors, (2555), 2224 states have internal predecessors, (2555), 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) [2021-11-21 01:12:16,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 2587 transitions. [2021-11-21 01:12:16,061 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 2587 transitions. Word has length 36 [2021-11-21 01:12:16,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:12:16,062 INFO L470 AbstractCegarLoop]: Abstraction has 2240 states and 2587 transitions. [2021-11-21 01:12:16,062 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) [2021-11-21 01:12:16,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 2587 transitions. [2021-11-21 01:12:16,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:12:16,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:12:16,063 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] [2021-11-21 01:12:16,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-21 01:12:16,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:12:16,278 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr373REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:12:16,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:12:16,279 INFO L85 PathProgramCache]: Analyzing trace with hash -526454296, now seen corresponding path program 1 times [2021-11-21 01:12:16,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:12:16,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260025112] [2021-11-21 01:12:16,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:12:16,280 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:12:16,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:12:16,281 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:12:16,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-21 01:12:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:12:16,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:12:16,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:12:16,544 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 [2021-11-21 01:12:16,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:16,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:12:17,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:17,201 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:12:17,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260025112] [2021-11-21 01:12:17,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260025112] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:12:17,202 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:12:17,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 01:12:17,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066055530] [2021-11-21 01:12:17,202 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:12:17,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:12:17,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:12:17,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:12:17,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:12:17,203 INFO L87 Difference]: Start difference. First operand 2240 states and 2587 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) [2021-11-21 01:12:42,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:12:42,255 INFO L93 Difference]: Finished difference Result 4636 states and 5142 transitions. [2021-11-21 01:12:42,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:12:42,257 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 [2021-11-21 01:12:42,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:12:42,266 INFO L225 Difference]: With dead ends: 4636 [2021-11-21 01:12:42,266 INFO L226 Difference]: Without dead ends: 4636 [2021-11-21 01:12:42,267 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 [2021-11-21 01:12:42,268 INFO L933 BasicCegarLoop]: 2511 mSDtfsCounter, 4787 mSDsluCounter, 4490 mSDsCounter, 0 mSdLazyCounter, 4588 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4792 SdHoareTripleChecker+Valid, 7001 SdHoareTripleChecker+Invalid, 4617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 4588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:12:42,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4792 Valid, 7001 Invalid, 4617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 4588 Invalid, 0 Unknown, 0 Unchecked, 24.8s Time] [2021-11-21 01:12:42,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4636 states. [2021-11-21 01:12:42,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4636 to 2240. [2021-11-21 01:12:42,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2240 states, 1400 states have (on average 1.822142857142857) internal successors, (2551), 2224 states have internal predecessors, (2551), 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) [2021-11-21 01:12:42,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 2583 transitions. [2021-11-21 01:12:42,322 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 2583 transitions. Word has length 36 [2021-11-21 01:12:42,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:12:42,323 INFO L470 AbstractCegarLoop]: Abstraction has 2240 states and 2583 transitions. [2021-11-21 01:12:42,323 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) [2021-11-21 01:12:42,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 2583 transitions. [2021-11-21 01:12:42,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-21 01:12:42,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:12:42,324 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] [2021-11-21 01:12:42,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-21 01:12:42,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:12:42,539 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:12:42,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:12:42,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1782356879, now seen corresponding path program 1 times [2021-11-21 01:12:42,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:12:42,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456944750] [2021-11-21 01:12:42,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:12:42,541 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:12:42,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:12:42,542 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:12:42,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-21 01:12:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:12:42,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:12:42,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:12:42,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:42,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:12:43,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:43,067 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:12:43,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456944750] [2021-11-21 01:12:43,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456944750] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:12:43,067 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:12:43,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 01:12:43,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285602745] [2021-11-21 01:12:43,068 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:12:43,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:12:43,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:12:43,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:12:43,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:12:43,069 INFO L87 Difference]: Start difference. First operand 2240 states and 2583 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) [2021-11-21 01:12:43,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:12:43,167 INFO L93 Difference]: Finished difference Result 2234 states and 2569 transitions. [2021-11-21 01:12:43,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:12:43,168 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 [2021-11-21 01:12:43,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:12:43,176 INFO L225 Difference]: With dead ends: 2234 [2021-11-21 01:12:43,176 INFO L226 Difference]: Without dead ends: 2234 [2021-11-21 01:12:43,177 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 [2021-11-21 01:12:43,179 INFO L933 BasicCegarLoop]: 1995 mSDtfsCounter, 959 mSDsluCounter, 3018 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 5013 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 [2021-11-21 01:12:43,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [963 Valid, 5013 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:12:43,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2021-11-21 01:12:43,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 2234. [2021-11-21 01:12:43,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2234 states, 1394 states have (on average 1.8199426111908177) internal successors, (2537), 2218 states have internal predecessors, (2537), 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) [2021-11-21 01:12:43,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2234 states to 2234 states and 2569 transitions. [2021-11-21 01:12:43,218 INFO L78 Accepts]: Start accepts. Automaton has 2234 states and 2569 transitions. Word has length 40 [2021-11-21 01:12:43,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:12:43,218 INFO L470 AbstractCegarLoop]: Abstraction has 2234 states and 2569 transitions. [2021-11-21 01:12:43,219 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) [2021-11-21 01:12:43,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2234 states and 2569 transitions. [2021-11-21 01:12:43,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-21 01:12:43,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:12:43,221 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] [2021-11-21 01:12:43,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-21 01:12:43,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:12:43,430 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:12:43,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:12:43,431 INFO L85 PathProgramCache]: Analyzing trace with hash -263031357, now seen corresponding path program 1 times [2021-11-21 01:12:43,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:12:43,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291334227] [2021-11-21 01:12:43,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:12:43,432 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:12:43,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:12:43,433 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:12:43,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-21 01:12:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:12:43,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:12:43,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:12:44,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:44,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:12:44,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:44,535 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:12:44,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291334227] [2021-11-21 01:12:44,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291334227] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:12:44,535 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:12:44,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 01:12:44,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740900257] [2021-11-21 01:12:44,536 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:12:44,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:12:44,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:12:44,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:12:44,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:12:44,538 INFO L87 Difference]: Start difference. First operand 2234 states and 2569 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) [2021-11-21 01:12:44,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:12:44,910 INFO L93 Difference]: Finished difference Result 3574 states and 4035 transitions. [2021-11-21 01:12:44,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:12:44,911 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 [2021-11-21 01:12:44,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:12:44,918 INFO L225 Difference]: With dead ends: 3574 [2021-11-21 01:12:44,918 INFO L226 Difference]: Without dead ends: 3574 [2021-11-21 01:12:44,918 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 [2021-11-21 01:12:44,919 INFO L933 BasicCegarLoop]: 2084 mSDtfsCounter, 1378 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 3926 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:12:44,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1387 Valid, 3926 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:12:44,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2021-11-21 01:12:44,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 2953. [2021-11-21 01:12:44,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2953 states, 2109 states have (on average 1.7946894262683737) internal successors, (3785), 2930 states have internal predecessors, (3785), 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) [2021-11-21 01:12:44,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2953 states to 2953 states and 3831 transitions. [2021-11-21 01:12:44,979 INFO L78 Accepts]: Start accepts. Automaton has 2953 states and 3831 transitions. Word has length 48 [2021-11-21 01:12:44,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:12:44,980 INFO L470 AbstractCegarLoop]: Abstraction has 2953 states and 3831 transitions. [2021-11-21 01:12:44,980 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) [2021-11-21 01:12:44,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2953 states and 3831 transitions. [2021-11-21 01:12:44,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-21 01:12:44,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:12:44,982 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] [2021-11-21 01:12:45,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-21 01:12:45,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:12:45,197 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:12:45,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:12:45,197 INFO L85 PathProgramCache]: Analyzing trace with hash -435335443, now seen corresponding path program 1 times [2021-11-21 01:12:45,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:12:45,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24739602] [2021-11-21 01:12:45,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:12:45,198 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:12:45,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:12:45,199 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:12:45,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-21 01:12:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:12:45,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:12:45,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:12:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:45,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:12:45,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:45,700 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:12:45,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24739602] [2021-11-21 01:12:45,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24739602] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:12:45,700 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:12:45,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 01:12:45,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820974387] [2021-11-21 01:12:45,701 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:12:45,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:12:45,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:12:45,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:12:45,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:12:45,704 INFO L87 Difference]: Start difference. First operand 2953 states and 3831 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) [2021-11-21 01:12:45,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:12:45,791 INFO L93 Difference]: Finished difference Result 4103 states and 5047 transitions. [2021-11-21 01:12:45,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:12:45,792 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 [2021-11-21 01:12:45,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:12:45,799 INFO L225 Difference]: With dead ends: 4103 [2021-11-21 01:12:45,799 INFO L226 Difference]: Without dead ends: 4103 [2021-11-21 01:12:45,800 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 [2021-11-21 01:12:45,801 INFO L933 BasicCegarLoop]: 3270 mSDtfsCounter, 1953 mSDsluCounter, 4567 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1963 SdHoareTripleChecker+Valid, 7837 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 [2021-11-21 01:12:45,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1963 Valid, 7837 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:12:45,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4103 states. [2021-11-21 01:12:45,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4103 to 2929. [2021-11-21 01:12:45,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2929 states, 2085 states have (on average 1.7961630695443644) internal successors, (3745), 2906 states have internal predecessors, (3745), 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) [2021-11-21 01:12:45,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 3791 transitions. [2021-11-21 01:12:45,860 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 3791 transitions. Word has length 51 [2021-11-21 01:12:45,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:12:45,860 INFO L470 AbstractCegarLoop]: Abstraction has 2929 states and 3791 transitions. [2021-11-21 01:12:45,861 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) [2021-11-21 01:12:45,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 3791 transitions. [2021-11-21 01:12:45,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-21 01:12:45,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:12:45,862 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] [2021-11-21 01:12:45,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-21 01:12:46,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:12:46,077 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:12:46,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:12:46,078 INFO L85 PathProgramCache]: Analyzing trace with hash -273786554, now seen corresponding path program 1 times [2021-11-21 01:12:46,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:12:46,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217625665] [2021-11-21 01:12:46,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:12:46,079 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:12:46,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:12:46,080 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:12:46,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-21 01:12:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:12:46,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:12:46,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:12:46,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:46,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:12:46,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:46,680 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:12:46,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217625665] [2021-11-21 01:12:46,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217625665] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:12:46,680 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:12:46,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 01:12:46,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426816562] [2021-11-21 01:12:46,681 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:12:46,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:12:46,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:12:46,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:12:46,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:12:46,682 INFO L87 Difference]: Start difference. First operand 2929 states and 3791 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) [2021-11-21 01:12:46,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:12:46,790 INFO L93 Difference]: Finished difference Result 3848 states and 4545 transitions. [2021-11-21 01:12:46,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:12:46,791 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 [2021-11-21 01:12:46,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:12:46,797 INFO L225 Difference]: With dead ends: 3848 [2021-11-21 01:12:46,797 INFO L226 Difference]: Without dead ends: 3848 [2021-11-21 01:12:46,797 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 [2021-11-21 01:12:46,799 INFO L933 BasicCegarLoop]: 3311 mSDtfsCounter, 1944 mSDsluCounter, 4658 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 7969 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:12:46,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1954 Valid, 7969 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:12:46,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3848 states. [2021-11-21 01:12:46,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3848 to 2917. [2021-11-21 01:12:46,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2917 states, 2073 states have (on average 1.7969126869271588) internal successors, (3725), 2894 states have internal predecessors, (3725), 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) [2021-11-21 01:12:46,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 3771 transitions. [2021-11-21 01:12:46,868 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 3771 transitions. Word has length 54 [2021-11-21 01:12:46,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:12:46,868 INFO L470 AbstractCegarLoop]: Abstraction has 2917 states and 3771 transitions. [2021-11-21 01:12:46,868 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) [2021-11-21 01:12:46,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 3771 transitions. [2021-11-21 01:12:46,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-21 01:12:46,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:12:46,870 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] [2021-11-21 01:12:46,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-21 01:12:47,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:12:47,086 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:12:47,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:12:47,086 INFO L85 PathProgramCache]: Analyzing trace with hash -665468730, now seen corresponding path program 1 times [2021-11-21 01:12:47,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:12:47,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919193349] [2021-11-21 01:12:47,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:12:47,087 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:12:47,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:12:47,089 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:12:47,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-21 01:12:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:12:47,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:12:47,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:12:47,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:12:47,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:12:47,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:12:47,475 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-21 01:12:47,475 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 [2021-11-21 01:12:47,565 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-21 01:12:47,566 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 [2021-11-21 01:12:47,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:47,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:12:47,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:47,896 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:12:47,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919193349] [2021-11-21 01:12:47,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919193349] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:12:47,897 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:12:47,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-21 01:12:47,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565492377] [2021-11-21 01:12:47,897 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:12:47,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:12:47,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:12:47,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:12:47,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:12:47,900 INFO L87 Difference]: Start difference. First operand 2917 states and 3771 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) [2021-11-21 01:12:51,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:12:51,905 INFO L93 Difference]: Finished difference Result 3022 states and 3882 transitions. [2021-11-21 01:12:51,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:12:51,906 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 [2021-11-21 01:12:51,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:12:51,910 INFO L225 Difference]: With dead ends: 3022 [2021-11-21 01:12:51,910 INFO L226 Difference]: Without dead ends: 3022 [2021-11-21 01:12:51,911 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 [2021-11-21 01:12:51,911 INFO L933 BasicCegarLoop]: 1886 mSDtfsCounter, 903 mSDsluCounter, 6545 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 8431 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:12:51,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 8431 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-21 01:12:51,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2021-11-21 01:12:51,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 2883. [2021-11-21 01:12:51,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2883 states, 2039 states have (on average 1.8097106424718) internal successors, (3690), 2860 states have internal predecessors, (3690), 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) [2021-11-21 01:12:51,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2883 states to 2883 states and 3736 transitions. [2021-11-21 01:12:51,972 INFO L78 Accepts]: Start accepts. Automaton has 2883 states and 3736 transitions. Word has length 57 [2021-11-21 01:12:51,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:12:51,973 INFO L470 AbstractCegarLoop]: Abstraction has 2883 states and 3736 transitions. [2021-11-21 01:12:51,973 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) [2021-11-21 01:12:51,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2883 states and 3736 transitions. [2021-11-21 01:12:51,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-21 01:12:51,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:12:51,975 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] [2021-11-21 01:12:51,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-21 01:12:52,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:12:52,195 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:12:52,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:12:52,196 INFO L85 PathProgramCache]: Analyzing trace with hash 122106401, now seen corresponding path program 1 times [2021-11-21 01:12:52,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:12:52,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480213242] [2021-11-21 01:12:52,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:12:52,197 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:12:52,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:12:52,199 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:12:52,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-21 01:12:52,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:12:52,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:12:52,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:12:53,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:53,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:12:53,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:53,496 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:12:53,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480213242] [2021-11-21 01:12:53,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480213242] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:12:53,497 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:12:53,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 01:12:53,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16159011] [2021-11-21 01:12:53,498 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:12:53,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:12:53,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:12:53,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:12:53,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:12:53,499 INFO L87 Difference]: Start difference. First operand 2883 states and 3736 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) [2021-11-21 01:12:53,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:12:53,769 INFO L93 Difference]: Finished difference Result 4147 states and 5185 transitions. [2021-11-21 01:12:53,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:12:53,771 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 [2021-11-21 01:12:53,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:12:53,779 INFO L225 Difference]: With dead ends: 4147 [2021-11-21 01:12:53,779 INFO L226 Difference]: Without dead ends: 4147 [2021-11-21 01:12:53,779 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 [2021-11-21 01:12:53,781 INFO L933 BasicCegarLoop]: 2356 mSDtfsCounter, 1075 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 4227 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 [2021-11-21 01:12:53,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1083 Valid, 4227 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:12:53,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4147 states. [2021-11-21 01:12:53,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4147 to 3606. [2021-11-21 01:12:53,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 2758 states have (on average 1.777012327773749) internal successors, (4901), 3576 states have internal predecessors, (4901), 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) [2021-11-21 01:12:53,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 4961 transitions. [2021-11-21 01:12:53,862 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 4961 transitions. Word has length 59 [2021-11-21 01:12:53,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:12:53,862 INFO L470 AbstractCegarLoop]: Abstraction has 3606 states and 4961 transitions. [2021-11-21 01:12:53,862 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) [2021-11-21 01:12:53,863 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 4961 transitions. [2021-11-21 01:12:53,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-21 01:12:53,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:12:53,864 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] [2021-11-21 01:12:53,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-21 01:12:54,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:12:54,080 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:12:54,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:12:54,081 INFO L85 PathProgramCache]: Analyzing trace with hash -45497454, now seen corresponding path program 1 times [2021-11-21 01:12:54,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:12:54,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788299133] [2021-11-21 01:12:54,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:12:54,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:12:54,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:12:54,083 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:12:54,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-21 01:12:54,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:12:54,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:12:54,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:12:54,703 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 [2021-11-21 01:12:54,713 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 [2021-11-21 01:12:55,622 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 01:12:55,623 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 [2021-11-21 01:12:55,634 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:12:55,636 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 [2021-11-21 01:12:55,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:55,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:13:03,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:13:03,583 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:13:03,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788299133] [2021-11-21 01:13:03,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788299133] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:13:03,583 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:13:03,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 01:13:03,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716690375] [2021-11-21 01:13:03,583 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:13:03,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:13:03,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:13:03,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:13:03,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-21 01:13:03,585 INFO L87 Difference]: Start difference. First operand 3606 states and 4961 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) [2021-11-21 01:13:20,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:13:20,213 INFO L93 Difference]: Finished difference Result 7022 states and 9543 transitions. [2021-11-21 01:13:20,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:13:20,214 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 [2021-11-21 01:13:20,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:13:20,223 INFO L225 Difference]: With dead ends: 7022 [2021-11-21 01:13:20,223 INFO L226 Difference]: Without dead ends: 7022 [2021-11-21 01:13:20,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-21 01:13:20,224 INFO L933 BasicCegarLoop]: 1172 mSDtfsCounter, 2804 mSDsluCounter, 3339 mSDsCounter, 0 mSdLazyCounter, 3283 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2819 SdHoareTripleChecker+Valid, 4511 SdHoareTripleChecker+Invalid, 6991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 3283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3633 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:13:20,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2819 Valid, 4511 Invalid, 6991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 3283 Invalid, 0 Unknown, 3633 Unchecked, 16.4s Time] [2021-11-21 01:13:20,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7022 states. [2021-11-21 01:13:20,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7022 to 3733. [2021-11-21 01:13:20,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3733 states, 2917 states have (on average 1.750771340418238) internal successors, (5107), 3700 states have internal predecessors, (5107), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-21 01:13:20,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 5173 transitions. [2021-11-21 01:13:20,322 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 5173 transitions. Word has length 62 [2021-11-21 01:13:20,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:13:20,322 INFO L470 AbstractCegarLoop]: Abstraction has 3733 states and 5173 transitions. [2021-11-21 01:13:20,322 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) [2021-11-21 01:13:20,323 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 5173 transitions. [2021-11-21 01:13:20,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-21 01:13:20,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:13:20,324 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] [2021-11-21 01:13:20,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-21 01:13:20,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:13:20,546 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:13:20,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:13:20,546 INFO L85 PathProgramCache]: Analyzing trace with hash -773371597, now seen corresponding path program 1 times [2021-11-21 01:13:20,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:13:20,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617293287] [2021-11-21 01:13:20,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:13:20,547 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:13:20,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:13:20,549 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:13:20,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-21 01:13:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:13:20,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:13:20,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:13:21,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:13:21,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:13:21,281 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 [2021-11-21 01:13:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:13:21,791 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:13:21,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617293287] [2021-11-21 01:13:21,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617293287] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:13:21,792 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:13:21,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 01:13:21,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833242035] [2021-11-21 01:13:21,793 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:13:21,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:13:21,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:13:21,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:13:21,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:13:21,795 INFO L87 Difference]: Start difference. First operand 3733 states and 5173 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) [2021-11-21 01:13:26,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:13:26,018 INFO L93 Difference]: Finished difference Result 3731 states and 5169 transitions. [2021-11-21 01:13:26,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:13:26,020 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 [2021-11-21 01:13:26,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:13:26,026 INFO L225 Difference]: With dead ends: 3731 [2021-11-21 01:13:26,026 INFO L226 Difference]: Without dead ends: 3731 [2021-11-21 01:13:26,027 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 [2021-11-21 01:13:26,027 INFO L933 BasicCegarLoop]: 1176 mSDtfsCounter, 4975 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4985 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:13:26,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4985 Valid, 1670 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-21 01:13:26,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3731 states. [2021-11-21 01:13:26,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3731 to 3731. [2021-11-21 01:13:26,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3731 states, 2917 states have (on average 1.7494000685635926) internal successors, (5103), 3698 states have internal predecessors, (5103), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-21 01:13:26,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3731 states to 3731 states and 5169 transitions. [2021-11-21 01:13:26,095 INFO L78 Accepts]: Start accepts. Automaton has 3731 states and 5169 transitions. Word has length 64 [2021-11-21 01:13:26,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:13:26,095 INFO L470 AbstractCegarLoop]: Abstraction has 3731 states and 5169 transitions. [2021-11-21 01:13:26,096 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) [2021-11-21 01:13:26,096 INFO L276 IsEmpty]: Start isEmpty. Operand 3731 states and 5169 transitions. [2021-11-21 01:13:26,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-21 01:13:26,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:13:26,097 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] [2021-11-21 01:13:26,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-21 01:13:26,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:13:26,315 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:13:26,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:13:26,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391416, now seen corresponding path program 1 times [2021-11-21 01:13:26,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:13:26,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468437608] [2021-11-21 01:13:26,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:13:26,316 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:13:26,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:13:26,318 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:13:26,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-21 01:13:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:13:26,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:13:26,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:13:26,891 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 [2021-11-21 01:13:26,908 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 [2021-11-21 01:13:26,956 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 [2021-11-21 01:13:26,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:13:26,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:13:27,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:13:27,140 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:13:27,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468437608] [2021-11-21 01:13:27,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468437608] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:13:27,141 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:13:27,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 01:13:27,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736998874] [2021-11-21 01:13:27,142 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:13:27,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:13:27,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:13:27,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:13:27,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:13:27,143 INFO L87 Difference]: Start difference. First operand 3731 states and 5169 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) [2021-11-21 01:13:34,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:13:34,041 INFO L93 Difference]: Finished difference Result 3730 states and 5167 transitions. [2021-11-21 01:13:34,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:13:34,042 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 [2021-11-21 01:13:34,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:13:34,047 INFO L225 Difference]: With dead ends: 3730 [2021-11-21 01:13:34,047 INFO L226 Difference]: Without dead ends: 3730 [2021-11-21 01:13:34,047 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 [2021-11-21 01:13:34,048 INFO L933 BasicCegarLoop]: 1964 mSDtfsCounter, 4 mSDsluCounter, 3252 mSDsCounter, 0 mSdLazyCounter, 2645 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5216 SdHoareTripleChecker+Invalid, 2646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:13:34,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5216 Invalid, 2646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2645 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2021-11-21 01:13:34,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3730 states. [2021-11-21 01:13:34,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3730 to 3730. [2021-11-21 01:13:34,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 2917 states have (on average 1.7487144326362702) internal successors, (5101), 3697 states have internal predecessors, (5101), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-21 01:13:34,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 5167 transitions. [2021-11-21 01:13:34,164 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 5167 transitions. Word has length 67 [2021-11-21 01:13:34,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:13:34,165 INFO L470 AbstractCegarLoop]: Abstraction has 3730 states and 5167 transitions. [2021-11-21 01:13:34,165 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) [2021-11-21 01:13:34,165 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 5167 transitions. [2021-11-21 01:13:34,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-21 01:13:34,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:13:34,167 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] [2021-11-21 01:13:34,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-21 01:13:34,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:13:34,381 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:13:34,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:13:34,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391415, now seen corresponding path program 1 times [2021-11-21 01:13:34,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:13:34,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368792043] [2021-11-21 01:13:34,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:13:34,384 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:13:34,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:13:34,385 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:13:34,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-21 01:13:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:13:34,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:13:34,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:13:34,923 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 [2021-11-21 01:13:34,954 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 [2021-11-21 01:13:34,967 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 [2021-11-21 01:13:35,049 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 [2021-11-21 01:13:35,054 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 [2021-11-21 01:13:35,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:13:35,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:13:35,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:13:35,513 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:13:35,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368792043] [2021-11-21 01:13:35,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368792043] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:13:35,513 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:13:35,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-21 01:13:35,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18436034] [2021-11-21 01:13:35,513 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:13:35,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:13:35,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:13:35,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:13:35,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:13:35,515 INFO L87 Difference]: Start difference. First operand 3730 states and 5167 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) [2021-11-21 01:14:00,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:14:00,189 INFO L93 Difference]: Finished difference Result 3729 states and 5165 transitions. [2021-11-21 01:14:00,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:14:00,190 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 [2021-11-21 01:14:00,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:14:00,194 INFO L225 Difference]: With dead ends: 3729 [2021-11-21 01:14:00,194 INFO L226 Difference]: Without dead ends: 3729 [2021-11-21 01:14:00,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:14:00,195 INFO L933 BasicCegarLoop]: 1964 mSDtfsCounter, 2 mSDsluCounter, 6354 mSDsCounter, 0 mSdLazyCounter, 5433 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8318 SdHoareTripleChecker+Invalid, 5434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:14:00,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 8318 Invalid, 5434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5433 Invalid, 0 Unknown, 0 Unchecked, 24.5s Time] [2021-11-21 01:14:00,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3729 states. [2021-11-21 01:14:00,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3729 to 3729. [2021-11-21 01:14:00,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3729 states, 2915 states have (on average 1.7492281303602057) internal successors, (5099), 3696 states have internal predecessors, (5099), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-21 01:14:00,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3729 states to 3729 states and 5165 transitions. [2021-11-21 01:14:00,293 INFO L78 Accepts]: Start accepts. Automaton has 3729 states and 5165 transitions. Word has length 67 [2021-11-21 01:14:00,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:14:00,294 INFO L470 AbstractCegarLoop]: Abstraction has 3729 states and 5165 transitions. [2021-11-21 01:14:00,294 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) [2021-11-21 01:14:00,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3729 states and 5165 transitions. [2021-11-21 01:14:00,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-21 01:14:00,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:14:00,295 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] [2021-11-21 01:14:00,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-21 01:14:00,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:14:00,510 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr396REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:14:00,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:14:00,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564532, now seen corresponding path program 1 times [2021-11-21 01:14:00,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:14:00,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242814967] [2021-11-21 01:14:00,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:14:00,512 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:14:00,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:14:00,513 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:14:00,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-21 01:14:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:14:00,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:14:00,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:14:00,980 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 [2021-11-21 01:14:00,993 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 [2021-11-21 01:14:01,029 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 [2021-11-21 01:14:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:01,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:14:01,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:01,168 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:14:01,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242814967] [2021-11-21 01:14:01,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242814967] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:14:01,169 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:14:01,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 01:14:01,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063506573] [2021-11-21 01:14:01,170 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:14:01,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:14:01,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:14:01,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:14:01,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:14:01,172 INFO L87 Difference]: Start difference. First operand 3729 states and 5165 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) [2021-11-21 01:14:08,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:14:08,401 INFO L93 Difference]: Finished difference Result 3728 states and 5161 transitions. [2021-11-21 01:14:08,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:14:08,402 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 [2021-11-21 01:14:08,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:14:08,406 INFO L225 Difference]: With dead ends: 3728 [2021-11-21 01:14:08,406 INFO L226 Difference]: Without dead ends: 3728 [2021-11-21 01:14:08,406 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 [2021-11-21 01:14:08,407 INFO L933 BasicCegarLoop]: 1960 mSDtfsCounter, 7 mSDsluCounter, 3244 mSDsCounter, 0 mSdLazyCounter, 2646 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5204 SdHoareTripleChecker+Invalid, 2647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:14:08,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 5204 Invalid, 2647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2646 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2021-11-21 01:14:08,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3728 states. [2021-11-21 01:14:08,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3728 to 3728. [2021-11-21 01:14:08,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3728 states, 2915 states have (on average 1.7478559176672384) internal successors, (5095), 3695 states have internal predecessors, (5095), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-21 01:14:08,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3728 states to 3728 states and 5161 transitions. [2021-11-21 01:14:08,444 INFO L78 Accepts]: Start accepts. Automaton has 3728 states and 5161 transitions. Word has length 67 [2021-11-21 01:14:08,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:14:08,444 INFO L470 AbstractCegarLoop]: Abstraction has 3728 states and 5161 transitions. [2021-11-21 01:14:08,445 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) [2021-11-21 01:14:08,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3728 states and 5161 transitions. [2021-11-21 01:14:08,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-21 01:14:08,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:14:08,446 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] [2021-11-21 01:14:08,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-21 01:14:08,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:14:08,669 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr397REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:14:08,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:14:08,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564533, now seen corresponding path program 1 times [2021-11-21 01:14:08,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:14:08,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035860820] [2021-11-21 01:14:08,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:14:08,670 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:14:08,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:14:08,673 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:14:08,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-21 01:14:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:14:08,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:14:08,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:14:09,058 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 [2021-11-21 01:14:09,086 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 [2021-11-21 01:14:09,096 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 [2021-11-21 01:14:09,153 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 [2021-11-21 01:14:09,157 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 [2021-11-21 01:14:09,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:09,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:14:09,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:09,574 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:14:09,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035860820] [2021-11-21 01:14:09,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035860820] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:14:09,574 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:14:09,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-21 01:14:09,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319398371] [2021-11-21 01:14:09,574 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:14:09,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:14:09,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:14:09,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:14:09,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:14:09,576 INFO L87 Difference]: Start difference. First operand 3728 states and 5161 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) [2021-11-21 01:14:33,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:14:33,912 INFO L93 Difference]: Finished difference Result 3727 states and 5157 transitions. [2021-11-21 01:14:33,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:14:33,914 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 [2021-11-21 01:14:33,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:14:33,920 INFO L225 Difference]: With dead ends: 3727 [2021-11-21 01:14:33,920 INFO L226 Difference]: Without dead ends: 3727 [2021-11-21 01:14:33,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:14:33,922 INFO L933 BasicCegarLoop]: 1959 mSDtfsCounter, 5 mSDsluCounter, 6348 mSDsCounter, 0 mSdLazyCounter, 5424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 8307 SdHoareTripleChecker+Invalid, 5425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:14:33,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 8307 Invalid, 5425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5424 Invalid, 0 Unknown, 0 Unchecked, 24.2s Time] [2021-11-21 01:14:33,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3727 states. [2021-11-21 01:14:33,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3727 to 3727. [2021-11-21 01:14:33,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3727 states, 2911 states have (on average 1.7488835451734799) internal successors, (5091), 3694 states have internal predecessors, (5091), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-21 01:14:33,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 5157 transitions. [2021-11-21 01:14:33,988 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 5157 transitions. Word has length 67 [2021-11-21 01:14:33,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:14:33,988 INFO L470 AbstractCegarLoop]: Abstraction has 3727 states and 5157 transitions. [2021-11-21 01:14:33,989 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) [2021-11-21 01:14:33,989 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 5157 transitions. [2021-11-21 01:14:33,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-21 01:14:33,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:14:33,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:14:34,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-21 01:14:34,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:14:34,206 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:14:34,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:14:34,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1448028751, now seen corresponding path program 1 times [2021-11-21 01:14:34,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:14:34,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250310164] [2021-11-21 01:14:34,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:14:34,208 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:14:34,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:14:34,218 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:14:34,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-21 01:14:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:14:34,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:14:34,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:14:34,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:34,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:14:34,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:34,939 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:14:34,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250310164] [2021-11-21 01:14:34,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250310164] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:14:34,939 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:14:34,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-21 01:14:34,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033397043] [2021-11-21 01:14:34,939 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:14:34,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:14:34,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:14:34,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:14:34,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:14:34,941 INFO L87 Difference]: Start difference. First operand 3727 states and 5157 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) [2021-11-21 01:14:35,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:14:35,118 INFO L93 Difference]: Finished difference Result 3737 states and 5174 transitions. [2021-11-21 01:14:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:14:35,119 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 [2021-11-21 01:14:35,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:14:35,131 INFO L225 Difference]: With dead ends: 3737 [2021-11-21 01:14:35,131 INFO L226 Difference]: Without dead ends: 3737 [2021-11-21 01:14:35,132 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 [2021-11-21 01:14:35,132 INFO L933 BasicCegarLoop]: 1960 mSDtfsCounter, 11 mSDsluCounter, 1959 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:14:35,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 3919 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:14:35,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-11-21 01:14:35,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3737. [2021-11-21 01:14:35,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3737 states, 2919 states have (on average 1.7482014388489209) internal successors, (5103), 3703 states have internal predecessors, (5103), 33 states have call successors, (33), 4 states have call predecessors, (33), 5 states have return successors, (38), 30 states have call predecessors, (38), 33 states have call successors, (38) [2021-11-21 01:14:35,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 5174 transitions. [2021-11-21 01:14:35,205 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 5174 transitions. Word has length 75 [2021-11-21 01:14:35,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:14:35,205 INFO L470 AbstractCegarLoop]: Abstraction has 3737 states and 5174 transitions. [2021-11-21 01:14:35,206 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) [2021-11-21 01:14:35,206 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 5174 transitions. [2021-11-21 01:14:35,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-21 01:14:35,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:14:35,207 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] [2021-11-21 01:14:35,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-21 01:14:35,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:14:35,418 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:14:35,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:14:35,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1921538705, now seen corresponding path program 1 times [2021-11-21 01:14:35,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:14:35,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516853979] [2021-11-21 01:14:35,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:14:35,419 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:14:35,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:14:35,420 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:14:35,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-21 01:14:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:14:35,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:14:35,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:14:35,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:35,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:14:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:36,337 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:14:36,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516853979] [2021-11-21 01:14:36,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516853979] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:14:36,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [450708318] [2021-11-21 01:14:36,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:14:36,338 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:14:36,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:14:36,341 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:14:36,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-11-21 01:14:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:14:36,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:14:36,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:14:37,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:37,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:14:37,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:37,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [450708318] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:14:37,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137446284] [2021-11-21 01:14:37,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:14:37,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:14:37,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:14:37,291 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:14:37,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-21 01:14:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:14:37,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:14:37,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:14:37,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:37,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:14:38,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:38,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137446284] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:14:38,028 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:14:38,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-21 01:14:38,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702121478] [2021-11-21 01:14:38,029 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:14:38,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:14:38,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:14:38,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:14:38,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:14:38,030 INFO L87 Difference]: Start difference. First operand 3737 states and 5174 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) [2021-11-21 01:14:38,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:14:38,660 INFO L93 Difference]: Finished difference Result 3751 states and 5195 transitions. [2021-11-21 01:14:38,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-21 01:14:38,661 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 [2021-11-21 01:14:38,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:14:38,674 INFO L225 Difference]: With dead ends: 3751 [2021-11-21 01:14:38,675 INFO L226 Difference]: Without dead ends: 3745 [2021-11-21 01:14:38,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-21 01:14:38,676 INFO L933 BasicCegarLoop]: 1960 mSDtfsCounter, 43 mSDsluCounter, 5873 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 7833 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:14:38,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 7833 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:14:38,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3745 states. [2021-11-21 01:14:38,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3745 to 3743. [2021-11-21 01:14:38,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3743 states, 2925 states have (on average 1.747008547008547) internal successors, (5110), 3709 states have internal predecessors, (5110), 33 states have call successors, (33), 4 states have call predecessors, (33), 5 states have return successors, (38), 30 states have call predecessors, (38), 33 states have call successors, (38) [2021-11-21 01:14:38,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3743 states to 3743 states and 5181 transitions. [2021-11-21 01:14:38,745 INFO L78 Accepts]: Start accepts. Automaton has 3743 states and 5181 transitions. Word has length 77 [2021-11-21 01:14:38,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:14:38,746 INFO L470 AbstractCegarLoop]: Abstraction has 3743 states and 5181 transitions. [2021-11-21 01:14:38,746 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) [2021-11-21 01:14:38,746 INFO L276 IsEmpty]: Start isEmpty. Operand 3743 states and 5181 transitions. [2021-11-21 01:14:38,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-21 01:14:38,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:14:38,747 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] [2021-11-21 01:14:38,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-21 01:14:38,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2021-11-21 01:14:39,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-21 01:14:39,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:14:39,364 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-21 01:14:39,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:14:39,364 INFO L85 PathProgramCache]: Analyzing trace with hash -962346065, now seen corresponding path program 2 times [2021-11-21 01:14:39,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:14:39,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454967117] [2021-11-21 01:14:39,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:14:39,365 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:14:39,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:14:39,367 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:14:39,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-21 01:14:39,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:14:39,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:14:39,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 01:14:39,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:14:40,123 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:40,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:14:40,679 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:40,679 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:14:40,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454967117] [2021-11-21 01:14:40,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454967117] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:14:40,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2118209361] [2021-11-21 01:14:40,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:14:40,680 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:14:40,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:14:40,681 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:14:40,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-11-21 01:14:41,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:14:41,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:14:41,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 01:14:41,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:14:41,708 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:41,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:14:41,901 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:41,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2118209361] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:14:41,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338569495] [2021-11-21 01:14:41,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:14:41,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:14:41,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:14:41,902 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:14:41,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c1c6c7f-e051-431c-b1b6-4fca74961d63/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-21 01:14:58,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:14:58,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:14:58,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-21 01:14:58,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:14:58,933 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 [2021-11-21 01:14:59,205 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:14:59,205 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 15 treesize of output 15 [2021-11-21 01:14:59,264 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 [2021-11-21 01:16:44,882 WARN L227 SmtUtils]: Spent 19.20s on a formula simplification. DAG size of input: 114 DAG size of output: 38 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:16:44,883 INFO L354 Elim1Store]: treesize reduction 880, result has 6.3 percent of original size [2021-11-21 01:16:44,883 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 83 [2021-11-21 01:16:45,754 INFO L354 Elim1Store]: treesize reduction 200, result has 0.5 percent of original size [2021-11-21 01:16:45,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 35 [2021-11-21 01:16:45,889 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 15 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:45,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:47,752 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-21 01:16:47,753 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 61 treesize of output 60 [2021-11-21 01:17:27,322 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr499_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_103| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select |c_#memory_$Pointer$.base| |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 [2021-11-21 01:22:06,092 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-21 01:22:06,092 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 112 treesize of output 111 [2021-11-21 01:22:09,225 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_#Ultimate.C_memset_#t~loopctr499_118| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_116| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr499| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_120| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_114| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_112| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr499_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_103| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_#memory_$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~loopctr499|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_120| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_118| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_116| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_114| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_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|))))) is different from false [2021-11-21 01:22:27,311 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 15 times theorem prover too weak. 0 trivial. 6 not checked. [2021-11-21 01:22:27,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338569495] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:22:27,312 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:22:27,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 15, 15] total 45 [2021-11-21 01:22:27,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827909886] [2021-11-21 01:22:27,312 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:22:27,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-21 01:22:27,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:22:27,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-21 01:22:27,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1471, Unknown=180, NotChecked=166, Total=1980 [2021-11-21 01:22:27,314 INFO L87 Difference]: Start difference. First operand 3743 states and 5181 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) [2021-11-21 01:22:32,366 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_#Ultimate.C_memset_#t~loopctr499_118| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_116| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr499| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_120| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_114| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_112| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr499_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_103| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr499|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_120| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_118| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_116| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_114| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_112| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= |c_old(#memory_$Pointer$.base)| |c_#memory_$Pointer$.base|)) is different from false