./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.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_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/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_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/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_080cf7e4-98bf-4c48-8df1-2391e73330f1/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 1a17e1f9edfd37607fb472869452b377d4af1281c9808dec0371b4f943952037 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:06:47,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:06:47,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:06:47,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:06:47,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:06:47,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:06:47,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:06:47,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:06:47,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:06:47,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:06:47,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:06:47,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:06:47,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:06:47,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:06:47,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:06:47,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:06:47,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:06:47,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:06:47,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:06:47,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:06:47,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:06:47,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:06:47,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:06:47,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:06:47,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:06:47,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:06:47,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:06:47,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:06:47,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:06:47,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:06:47,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:06:47,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:06:47,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:06:47,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:06:47,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:06:47,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:06:47,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:06:47,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:06:47,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:06:47,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:06:47,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:06:47,981 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-21 01:06:48,015 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:06:48,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:06:48,017 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:06:48,017 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:06:48,018 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:06:48,018 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:06:48,019 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:06:48,019 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:06:48,020 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:06:48,020 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:06:48,029 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:06:48,029 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:06:48,030 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:06:48,030 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:06:48,030 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:06:48,030 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:06:48,030 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:06:48,031 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:06:48,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 01:06:48,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 01:06:48,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:06:48,032 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:06:48,032 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:06:48,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:06:48,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:06:48,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:06:48,033 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 01:06:48,033 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 01:06:48,034 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 01:06:48,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:06:48,034 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 01:06:48,034 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:06:48,035 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:06:48,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:06:48,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:06:48,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:06:48,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:06:48,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:06:48,036 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:06:48,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:06:48,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:06:48,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:06:48,037 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_080cf7e4-98bf-4c48-8df1-2391e73330f1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a17e1f9edfd37607fb472869452b377d4af1281c9808dec0371b4f943952037 [2021-11-21 01:06:48,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:06:48,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:06:48,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:06:48,457 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:06:48,458 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:06:48,460 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i [2021-11-21 01:06:48,548 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/data/3461cdc2a/87ac0221408b49a1ab23c8d004e0b6c8/FLAG16c0630d5 [2021-11-21 01:06:49,362 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:06:49,363 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i [2021-11-21 01:06:49,388 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/data/3461cdc2a/87ac0221408b49a1ab23c8d004e0b6c8/FLAG16c0630d5 [2021-11-21 01:06:49,499 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/data/3461cdc2a/87ac0221408b49a1ab23c8d004e0b6c8 [2021-11-21 01:06:49,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:06:49,504 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:06:49,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:06:49,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:06:49,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:06:49,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:06:49" (1/1) ... [2021-11-21 01:06:49,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41e28409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:06:49, skipping insertion in model container [2021-11-21 01:06:49,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:06:49" (1/1) ... [2021-11-21 01:06:49,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:06:49,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:06:50,145 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_080cf7e4-98bf-4c48-8df1-2391e73330f1/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[33021,33034] [2021-11-21 01:06:50,380 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_080cf7e4-98bf-4c48-8df1-2391e73330f1/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[49681,49694] [2021-11-21 01:06:50,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:06:50,403 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 01:06:50,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6c92c76a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:06:50, skipping insertion in model container [2021-11-21 01:06:50,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:06:50,404 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-21 01:06:50,407 INFO L158 Benchmark]: Toolchain (without parser) took 901.40ms. Allocated memory is still 115.3MB. Free memory was 83.3MB in the beginning and 75.8MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:06:50,408 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 115.3MB. Free memory is still 67.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:06:50,409 INFO L158 Benchmark]: CACSL2BoogieTranslator took 894.64ms. Allocated memory is still 115.3MB. Free memory was 83.0MB in the beginning and 75.8MB in the end (delta: 7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:06:50,412 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 115.3MB. Free memory is still 67.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 894.64ms. Allocated memory is still 115.3MB. Free memory was 83.0MB in the beginning and 75.8MB in the end (delta: 7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: 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_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/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_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/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_080cf7e4-98bf-4c48-8df1-2391e73330f1/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 1a17e1f9edfd37607fb472869452b377d4af1281c9808dec0371b4f943952037 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:06:53,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:06:53,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:06:53,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:06:53,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:06:53,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:06:53,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:06:53,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:06:53,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:06:53,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:06:53,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:06:53,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:06:53,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:06:53,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:06:53,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:06:53,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:06:53,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:06:53,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:06:53,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:06:53,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:06:53,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:06:53,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:06:53,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:06:53,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:06:53,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:06:53,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:06:53,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:06:53,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:06:53,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:06:53,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:06:53,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:06:53,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:06:53,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:06:53,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:06:53,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:06:53,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:06:53,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:06:53,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:06:53,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:06:53,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:06:53,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:06:53,421 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-21 01:06:53,466 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:06:53,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:06:53,466 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:06:53,467 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:06:53,467 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:06:53,468 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:06:53,468 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:06:53,468 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:06:53,469 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:06:53,469 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:06:53,469 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:06:53,469 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:06:53,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 01:06:53,471 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 01:06:53,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:06:53,471 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:06:53,471 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:06:53,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:06:53,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:06:53,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:06:53,472 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 01:06:53,473 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 01:06:53,473 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 01:06:53,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:06:53,473 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 01:06:53,474 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:06:53,474 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:06:53,474 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:06:53,474 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:06:53,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:06:53,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:06:53,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:06:53,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:06:53,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:06:53,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:06:53,476 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:06:53,477 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:06:53,477 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:06:53,477 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:06:53,477 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_080cf7e4-98bf-4c48-8df1-2391e73330f1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a17e1f9edfd37607fb472869452b377d4af1281c9808dec0371b4f943952037 [2021-11-21 01:06:53,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:06:53,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:06:53,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:06:53,961 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:06:53,962 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:06:53,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i [2021-11-21 01:06:54,036 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/data/6a2486542/c747095afa254123882f562e7d862504/FLAG195f68037 [2021-11-21 01:06:54,934 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:06:54,942 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i [2021-11-21 01:06:54,972 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/data/6a2486542/c747095afa254123882f562e7d862504/FLAG195f68037 [2021-11-21 01:06:55,041 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/data/6a2486542/c747095afa254123882f562e7d862504 [2021-11-21 01:06:55,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:06:55,047 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:06:55,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:06:55,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:06:55,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:06:55,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:06:55" (1/1) ... [2021-11-21 01:06:55,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49d58981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:06:55, skipping insertion in model container [2021-11-21 01:06:55,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:06:55" (1/1) ... [2021-11-21 01:06:55,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:06:55,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:06:55,667 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_080cf7e4-98bf-4c48-8df1-2391e73330f1/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[33021,33034] [2021-11-21 01:06:55,945 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_080cf7e4-98bf-4c48-8df1-2391e73330f1/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[49681,49694] [2021-11-21 01:06:55,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:06:55,973 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-21 01:06:55,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:06:56,026 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_080cf7e4-98bf-4c48-8df1-2391e73330f1/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[33021,33034] [2021-11-21 01:06:56,195 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_080cf7e4-98bf-4c48-8df1-2391e73330f1/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[49681,49694] [2021-11-21 01:06:56,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:06:56,222 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:06:56,296 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_080cf7e4-98bf-4c48-8df1-2391e73330f1/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[33021,33034] [2021-11-21 01:06:56,392 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_080cf7e4-98bf-4c48-8df1-2391e73330f1/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[49681,49694] [2021-11-21 01:06:56,397 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:06:56,460 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:06:56,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:06:56 WrapperNode [2021-11-21 01:06:56,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:06:56,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:06:56,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:06:56,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:06:56,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:06:56" (1/1) ... [2021-11-21 01:06:56,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:06:56" (1/1) ... [2021-11-21 01:06:56,647 INFO L137 Inliner]: procedures = 180, calls = 388, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1414 [2021-11-21 01:06:56,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:06:56,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:06:56,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:06:56,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:06:56,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:06:56" (1/1) ... [2021-11-21 01:06:56,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:06:56" (1/1) ... [2021-11-21 01:06:56,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:06:56" (1/1) ... [2021-11-21 01:06:56,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:06:56" (1/1) ... [2021-11-21 01:06:56,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:06:56" (1/1) ... [2021-11-21 01:06:56,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:06:56" (1/1) ... [2021-11-21 01:06:56,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:06:56" (1/1) ... [2021-11-21 01:06:56,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:06:56,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:06:56,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:06:56,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:06:56,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:06:56" (1/1) ... [2021-11-21 01:06:56,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:06:56,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:06:56,879 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:06:56,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:06:56,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-21 01:06:56,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 01:06:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:06:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:06:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:06:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:06:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:06:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:06:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:06:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:06:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 01:06:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:06:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:06:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-21 01:06:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:06:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:06:56,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:06:57,270 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:06:57,288 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:06:57,293 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 01:07:04,394 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:07:04,425 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:07:04,425 INFO L301 CfgBuilder]: Removed 83 assume(true) statements. [2021-11-21 01:07:04,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:07:04 BoogieIcfgContainer [2021-11-21 01:07:04,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:07:04,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:07:04,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:07:04,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:07:04,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:06:55" (1/3) ... [2021-11-21 01:07:04,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b9d51e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:07:04, skipping insertion in model container [2021-11-21 01:07:04,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:06:56" (2/3) ... [2021-11-21 01:07:04,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b9d51e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:07:04, skipping insertion in model container [2021-11-21 01:07:04,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:07:04" (3/3) ... [2021-11-21 01:07:04,440 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test5-1.i [2021-11-21 01:07:04,446 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:07:04,446 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 729 error locations. [2021-11-21 01:07:04,512 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:07:04,522 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 01:07:04,524 INFO L340 AbstractCegarLoop]: Starting to check reachability of 729 error locations. [2021-11-21 01:07:04,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 1456 states, 719 states have (on average 2.2378303198887344) internal successors, (1609), 1447 states have internal predecessors, (1609), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-21 01:07:04,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 01:07:04,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:07:04,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 01:07:04,580 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:07:04,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:07:04,587 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2021-11-21 01:07:04,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:07:04,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268239087] [2021-11-21 01:07:04,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:07:04,599 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:07:04,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:07:04,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:07:04,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:07:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:07:04,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 01:07:04,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:07:04,849 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 01:07:04,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:07:04,873 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 01:07:04,874 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:07:04,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268239087] [2021-11-21 01:07:04,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268239087] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:07:04,875 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:07:04,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:07:04,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624437259] [2021-11-21 01:07:04,878 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:07:04,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:07:04,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:07:04,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:07:04,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:07:04,912 INFO L87 Difference]: Start difference. First operand has 1456 states, 719 states have (on average 2.2378303198887344) internal successors, (1609), 1447 states have internal predecessors, (1609), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 01:07:05,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:07:05,078 INFO L93 Difference]: Finished difference Result 1438 states and 1521 transitions. [2021-11-21 01:07:05,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:07:05,080 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 5 [2021-11-21 01:07:05,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:07:05,118 INFO L225 Difference]: With dead ends: 1438 [2021-11-21 01:07:05,119 INFO L226 Difference]: Without dead ends: 1436 [2021-11-21 01:07:05,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:07:05,126 INFO L933 BasicCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:07:05,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:07:05,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-11-21 01:07:05,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1436. [2021-11-21 01:07:05,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 710 states have (on average 2.108450704225352) internal successors, (1497), 1427 states have internal predecessors, (1497), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-21 01:07:05,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 1519 transitions. [2021-11-21 01:07:05,279 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 1519 transitions. Word has length 5 [2021-11-21 01:07:05,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:07:05,279 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 1519 transitions. [2021-11-21 01:07:05,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 01:07:05,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 1519 transitions. [2021-11-21 01:07:05,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 01:07:05,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:07:05,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 01:07:05,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-21 01:07:05,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:07:05,490 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:07:05,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:07:05,491 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2021-11-21 01:07:05,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:07:05,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330192539] [2021-11-21 01:07:05,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:07:05,492 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:07:05,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:07:05,504 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:07:05,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:07:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:07:05,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:07:05,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:07:05,683 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 01:07:05,698 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 01:07:05,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:07:05,718 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 01:07:05,718 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:07:05,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330192539] [2021-11-21 01:07:05,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330192539] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:07:05,719 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:07:05,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:07:05,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89433219] [2021-11-21 01:07:05,720 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:07:05,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:07:05,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:07:05,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:07:05,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:07:05,722 INFO L87 Difference]: Start difference. First operand 1436 states and 1519 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 01:07:09,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:07:09,031 INFO L93 Difference]: Finished difference Result 1692 states and 1818 transitions. [2021-11-21 01:07:09,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:07:09,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 5 [2021-11-21 01:07:09,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:07:09,044 INFO L225 Difference]: With dead ends: 1692 [2021-11-21 01:07:09,045 INFO L226 Difference]: Without dead ends: 1692 [2021-11-21 01:07:09,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 01:07:09,047 INFO L933 BasicCegarLoop]: 957 mSDtfsCounter, 1369 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:07:09,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1380 Valid, 1221 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-21 01:07:09,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2021-11-21 01:07:09,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1421. [2021-11-21 01:07:09,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 786 states have (on average 1.960559796437659) internal successors, (1541), 1412 states have internal predecessors, (1541), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-21 01:07:09,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 1563 transitions. [2021-11-21 01:07:09,103 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 1563 transitions. Word has length 5 [2021-11-21 01:07:09,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:07:09,104 INFO L470 AbstractCegarLoop]: Abstraction has 1421 states and 1563 transitions. [2021-11-21 01:07:09,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 01:07:09,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 1563 transitions. [2021-11-21 01:07:09,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 01:07:09,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:07:09,105 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 01:07:09,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:07:09,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:07:09,318 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:07:09,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:07:09,320 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2021-11-21 01:07:09,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:07:09,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130663136] [2021-11-21 01:07:09,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:07:09,326 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:07:09,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:07:09,328 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:07:09,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 01:07:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:07:09,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:07:09,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:07:09,535 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 01:07:09,567 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 01:07:09,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:07:09,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:07:09,653 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:07:09,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130663136] [2021-11-21 01:07:09,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130663136] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:07:09,653 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:07:09,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-21 01:07:09,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627442488] [2021-11-21 01:07:09,654 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:07:09,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:07:09,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:07:09,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:07:09,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:07:09,656 INFO L87 Difference]: Start difference. First operand 1421 states and 1563 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 01:07:17,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:07:17,783 INFO L93 Difference]: Finished difference Result 1994 states and 2186 transitions. [2021-11-21 01:07:17,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:07:17,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 5 [2021-11-21 01:07:17,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:07:17,797 INFO L225 Difference]: With dead ends: 1994 [2021-11-21 01:07:17,798 INFO L226 Difference]: Without dead ends: 1994 [2021-11-21 01:07:17,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 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 01:07:17,800 INFO L933 BasicCegarLoop]: 1290 mSDtfsCounter, 827 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:07:17,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [834 Valid, 2482 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1640 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2021-11-21 01:07:17,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2021-11-21 01:07:17,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1577. [2021-11-21 01:07:17,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 952 states have (on average 1.940126050420168) internal successors, (1847), 1568 states have internal predecessors, (1847), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-21 01:07:17,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 1869 transitions. [2021-11-21 01:07:17,859 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 1869 transitions. Word has length 5 [2021-11-21 01:07:17,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:07:17,860 INFO L470 AbstractCegarLoop]: Abstraction has 1577 states and 1869 transitions. [2021-11-21 01:07:17,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 01:07:17,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 1869 transitions. [2021-11-21 01:07:17,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 01:07:17,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:07:17,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 01:07:17,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:07:18,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:07:18,080 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:07:18,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:07:18,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2021-11-21 01:07:18,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:07:18,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692099499] [2021-11-21 01:07:18,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:07:18,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:07:18,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:07:18,084 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:07:18,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-21 01:07:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:07:18,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:07:18,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:07:18,255 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 01:07:18,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:07:18,279 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 01:07:18,279 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:07:18,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692099499] [2021-11-21 01:07:18,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692099499] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:07:18,280 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:07:18,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 01:07:18,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916646586] [2021-11-21 01:07:18,281 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:07:18,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:07:18,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:07:18,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:07:18,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:07:18,283 INFO L87 Difference]: Start difference. First operand 1577 states and 1869 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 01:07:18,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:07:18,526 INFO L93 Difference]: Finished difference Result 3139 states and 3723 transitions. [2021-11-21 01:07:18,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:07:18,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 6 [2021-11-21 01:07:18,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:07:18,549 INFO L225 Difference]: With dead ends: 3139 [2021-11-21 01:07:18,550 INFO L226 Difference]: Without dead ends: 3139 [2021-11-21 01:07:18,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 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 01:07:18,551 INFO L933 BasicCegarLoop]: 1699 mSDtfsCounter, 2754 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2776 SdHoareTripleChecker+Valid, 3121 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:07:18,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2776 Valid, 3121 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:07:18,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2021-11-21 01:07:18,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 2522. [2021-11-21 01:07:18,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2522 states, 1892 states have (on average 1.9439746300211416) internal successors, (3678), 2507 states have internal predecessors, (3678), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-21 01:07:18,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2522 states to 2522 states and 3722 transitions. [2021-11-21 01:07:18,687 INFO L78 Accepts]: Start accepts. Automaton has 2522 states and 3722 transitions. Word has length 6 [2021-11-21 01:07:18,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:07:18,687 INFO L470 AbstractCegarLoop]: Abstraction has 2522 states and 3722 transitions. [2021-11-21 01:07:18,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 01:07:18,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2522 states and 3722 transitions. [2021-11-21 01:07:18,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:07:18,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:07:18,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:07:18,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:07:18,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:07:18,902 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:07:18,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:07:18,904 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2021-11-21 01:07:18,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:07:18,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838690734] [2021-11-21 01:07:18,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:07:18,905 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:07:18,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:07:18,907 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:07:18,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 01:07:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:07:19,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:07:19,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:07:19,154 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 01:07:19,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:07:19,184 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 01:07:19,184 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:07:19,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1838690734] [2021-11-21 01:07:19,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1838690734] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:07:19,185 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:07:19,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 01:07:19,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892525348] [2021-11-21 01:07:19,186 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:07:19,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:07:19,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:07:19,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:07:19,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:07:19,188 INFO L87 Difference]: Start difference. First operand 2522 states and 3722 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 01:07:19,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:07:19,258 INFO L93 Difference]: Finished difference Result 2462 states and 3636 transitions. [2021-11-21 01:07:19,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:07:19,259 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 01:07:19,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:07:19,281 INFO L225 Difference]: With dead ends: 2462 [2021-11-21 01:07:19,282 INFO L226 Difference]: Without dead ends: 2462 [2021-11-21 01:07:19,282 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 01:07:19,283 INFO L933 BasicCegarLoop]: 1370 mSDtfsCounter, 1340 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 1426 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 01:07:19,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1351 Valid, 1426 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:07:19,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2462 states. [2021-11-21 01:07:19,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2462 to 2462. [2021-11-21 01:07:19,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 1856 states have (on average 1.9353448275862069) internal successors, (3592), 2447 states have internal predecessors, (3592), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-21 01:07:19,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 3636 transitions. [2021-11-21 01:07:19,385 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 3636 transitions. Word has length 11 [2021-11-21 01:07:19,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:07:19,386 INFO L470 AbstractCegarLoop]: Abstraction has 2462 states and 3636 transitions. [2021-11-21 01:07:19,386 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 01:07:19,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 3636 transitions. [2021-11-21 01:07:19,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 01:07:19,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:07:19,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:07:19,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:07:19,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:07:19,604 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:07:19,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:07:19,604 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2021-11-21 01:07:19,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:07:19,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650097641] [2021-11-21 01:07:19,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:07:19,605 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:07:19,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:07:19,606 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:07:19,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-21 01:07:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:07:19,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:07:19,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:07:19,847 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 01:07:19,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:07:19,892 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 01:07:19,892 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:07:19,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650097641] [2021-11-21 01:07:19,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650097641] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:07:19,892 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:07:19,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-21 01:07:19,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508407878] [2021-11-21 01:07:19,893 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:07:19,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:07:19,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:07:19,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:07:19,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:07:19,895 INFO L87 Difference]: Start difference. First operand 2462 states and 3636 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 01:07:20,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:07:20,088 INFO L93 Difference]: Finished difference Result 2434 states and 3580 transitions. [2021-11-21 01:07:20,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:07:20,089 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 01:07:20,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:07:20,107 INFO L225 Difference]: With dead ends: 2434 [2021-11-21 01:07:20,107 INFO L226 Difference]: Without dead ends: 2434 [2021-11-21 01:07:20,107 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 01:07:20,108 INFO L933 BasicCegarLoop]: 1325 mSDtfsCounter, 2612 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2623 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:07:20,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2623 Valid, 2671 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:07:20,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2021-11-21 01:07:20,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 2432. [2021-11-21 01:07:20,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 1840 states have (on average 1.9206521739130435) internal successors, (3534), 2417 states have internal predecessors, (3534), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-21 01:07:20,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 3578 transitions. [2021-11-21 01:07:20,188 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 3578 transitions. Word has length 13 [2021-11-21 01:07:20,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:07:20,189 INFO L470 AbstractCegarLoop]: Abstraction has 2432 states and 3578 transitions. [2021-11-21 01:07:20,189 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 01:07:20,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 3578 transitions. [2021-11-21 01:07:20,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-21 01:07:20,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:07:20,190 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 01:07:20,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:07:20,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:07:20,393 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:07:20,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:07:20,394 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2021-11-21 01:07:20,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:07:20,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056421349] [2021-11-21 01:07:20,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:07:20,395 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:07:20,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:07:20,396 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:07:20,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-21 01:07:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:07:20,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:07:20,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:07:20,619 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 01:07:20,741 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 01:07:20,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:07:20,865 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 01:07:20,865 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:07:20,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056421349] [2021-11-21 01:07:20,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056421349] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:07:20,866 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:07:20,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 01:07:20,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679409215] [2021-11-21 01:07:20,866 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:07:20,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:07:20,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:07:20,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:07:20,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:07:20,867 INFO L87 Difference]: Start difference. First operand 2432 states and 3578 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 01:07:25,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:07:25,912 INFO L93 Difference]: Finished difference Result 3738 states and 5340 transitions. [2021-11-21 01:07:25,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:07:25,912 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 01:07:25,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:07:25,940 INFO L225 Difference]: With dead ends: 3738 [2021-11-21 01:07:25,941 INFO L226 Difference]: Without dead ends: 3738 [2021-11-21 01:07:25,941 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 01:07:25,942 INFO L933 BasicCegarLoop]: 679 mSDtfsCounter, 3015 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3023 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:07:25,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3023 Valid, 1552 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-21 01:07:25,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2021-11-21 01:07:26,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 2428. [2021-11-21 01:07:26,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2428 states, 1840 states have (on average 1.916304347826087) internal successors, (3526), 2413 states have internal predecessors, (3526), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-21 01:07:26,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 3570 transitions. [2021-11-21 01:07:26,033 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 3570 transitions. Word has length 27 [2021-11-21 01:07:26,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:07:26,034 INFO L470 AbstractCegarLoop]: Abstraction has 2428 states and 3570 transitions. [2021-11-21 01:07:26,034 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 01:07:26,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 3570 transitions. [2021-11-21 01:07:26,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-21 01:07:26,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:07:26,035 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 01:07:26,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-21 01:07:26,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:07:26,249 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:07:26,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:07:26,250 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2021-11-21 01:07:26,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:07:26,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302514968] [2021-11-21 01:07:26,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:07:26,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:07:26,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:07:26,252 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:07:26,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-21 01:07:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:07:26,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:07:26,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:07:26,476 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 01:07:26,811 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 01:07:26,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:07:27,389 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 01:07:27,389 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:07:27,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302514968] [2021-11-21 01:07:27,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [302514968] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:07:27,390 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:07:27,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 01:07:27,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241356354] [2021-11-21 01:07:27,390 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:07:27,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:07:27,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:07:27,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:07:27,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:07:27,391 INFO L87 Difference]: Start difference. First operand 2428 states and 3570 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 01:07:38,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:07:38,834 INFO L93 Difference]: Finished difference Result 3015 states and 4197 transitions. [2021-11-21 01:07:38,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:07:38,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 01:07:38,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:07:38,849 INFO L225 Difference]: With dead ends: 3015 [2021-11-21 01:07:38,850 INFO L226 Difference]: Without dead ends: 3015 [2021-11-21 01:07:38,850 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 01:07:38,851 INFO L933 BasicCegarLoop]: 1003 mSDtfsCounter, 2101 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2101 SdHoareTripleChecker+Valid, 2804 SdHoareTripleChecker+Invalid, 2312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:07:38,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2101 Valid, 2804 Invalid, 2312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2021-11-21 01:07:38,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2021-11-21 01:07:38,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 2424. [2021-11-21 01:07:38,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 1840 states have (on average 1.9119565217391303) internal successors, (3518), 2409 states have internal predecessors, (3518), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-21 01:07:38,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 3562 transitions. [2021-11-21 01:07:38,928 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 3562 transitions. Word has length 27 [2021-11-21 01:07:38,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:07:38,928 INFO L470 AbstractCegarLoop]: Abstraction has 2424 states and 3562 transitions. [2021-11-21 01:07:38,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 01:07:38,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 3562 transitions. [2021-11-21 01:07:38,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-21 01:07:38,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:07:38,930 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] [2021-11-21 01:07:38,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-21 01:07:39,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:07:39,144 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:07:39,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:07:39,144 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2021-11-21 01:07:39,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:07:39,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155890227] [2021-11-21 01:07:39,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:07:39,145 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:07:39,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:07:39,147 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:07:39,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-21 01:07:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:07:39,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:07:39,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:07:39,421 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 01:07:39,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:07:39,522 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 01:07:39,523 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:07:39,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155890227] [2021-11-21 01:07:39,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155890227] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:07:39,523 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:07:39,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 01:07:39,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805317474] [2021-11-21 01:07:39,523 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:07:39,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:07:39,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:07:39,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:07:39,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:07:39,524 INFO L87 Difference]: Start difference. First operand 2424 states and 3562 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 01:07:39,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:07:39,594 INFO L93 Difference]: Finished difference Result 2412 states and 3542 transitions. [2021-11-21 01:07:39,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:07:39,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-21 01:07:39,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:07:39,609 INFO L225 Difference]: With dead ends: 2412 [2021-11-21 01:07:39,609 INFO L226 Difference]: Without dead ends: 2412 [2021-11-21 01:07:39,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 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 01:07:39,612 INFO L933 BasicCegarLoop]: 1319 mSDtfsCounter, 1287 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1298 SdHoareTripleChecker+Valid, 2649 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 01:07:39,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1298 Valid, 2649 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:07:39,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-11-21 01:07:39,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2412. [2021-11-21 01:07:39,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 1828 states have (on average 1.9135667396061269) internal successors, (3498), 2397 states have internal predecessors, (3498), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-21 01:07:39,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3542 transitions. [2021-11-21 01:07:39,664 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3542 transitions. Word has length 42 [2021-11-21 01:07:39,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:07:39,666 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 3542 transitions. [2021-11-21 01:07:39,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 01:07:39,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3542 transitions. [2021-11-21 01:07:39,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-21 01:07:39,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:07:39,671 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] [2021-11-21 01:07:39,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-21 01:07:39,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:07:39,884 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:07:39,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:07:39,886 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2021-11-21 01:07:39,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:07:39,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884088853] [2021-11-21 01:07:39,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:07:39,887 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:07:39,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:07:39,888 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:07:39,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-21 01:07:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:07:40,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:07:40,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:07:40,470 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 01:07:40,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:07:40,797 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 01:07:40,798 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:07:40,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884088853] [2021-11-21 01:07:40,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884088853] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:07:40,798 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:07:40,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 01:07:40,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171106478] [2021-11-21 01:07:40,798 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:07:40,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:07:40,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:07:40,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:07:40,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:07:40,799 INFO L87 Difference]: Start difference. First operand 2412 states and 3542 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:07:40,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:07:40,884 INFO L93 Difference]: Finished difference Result 2228 states and 3187 transitions. [2021-11-21 01:07:40,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:07:40,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-21 01:07:40,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:07:40,898 INFO L225 Difference]: With dead ends: 2228 [2021-11-21 01:07:40,898 INFO L226 Difference]: Without dead ends: 2228 [2021-11-21 01:07:40,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 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 01:07:40,899 INFO L933 BasicCegarLoop]: 1327 mSDtfsCounter, 67 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 2559 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:07:40,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 2559 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:07:40,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2021-11-21 01:07:40,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2228. [2021-11-21 01:07:40,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 1644 states have (on average 1.911800486618005) internal successors, (3143), 2213 states have internal predecessors, (3143), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-21 01:07:40,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 3187 transitions. [2021-11-21 01:07:40,971 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 3187 transitions. Word has length 50 [2021-11-21 01:07:40,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:07:40,971 INFO L470 AbstractCegarLoop]: Abstraction has 2228 states and 3187 transitions. [2021-11-21 01:07:40,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:07:40,972 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 3187 transitions. [2021-11-21 01:07:40,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-21 01:07:40,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:07:40,976 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] [2021-11-21 01:07:40,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-21 01:07:41,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:07:41,189 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:07:41,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:07:41,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2021-11-21 01:07:41,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:07:41,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805526795] [2021-11-21 01:07:41,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:07:41,191 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:07:41,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:07:41,192 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:07:41,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-21 01:07:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:07:41,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:07:41,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:07:41,533 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 01:07:41,541 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 01:07:42,158 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 01:07:42,159 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 26 treesize of output 28 [2021-11-21 01:07:42,165 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:07:42,166 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 25 treesize of output 21 [2021-11-21 01:07:42,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:07:42,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:07:46,894 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 01:07:46,894 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:07:46,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805526795] [2021-11-21 01:07:46,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805526795] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:07:46,894 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:07:46,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 01:07:46,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076899079] [2021-11-21 01:07:46,894 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:07:46,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:07:46,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:07:46,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:07:46,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-21 01:07:46,895 INFO L87 Difference]: Start difference. First operand 2228 states and 3187 transitions. Second operand has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 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 01:07:47,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:07:47,010 INFO L93 Difference]: Finished difference Result 2227 states and 3185 transitions. [2021-11-21 01:07:47,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:07:47,011 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 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 53 [2021-11-21 01:07:47,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:07:47,022 INFO L225 Difference]: With dead ends: 2227 [2021-11-21 01:07:47,022 INFO L226 Difference]: Without dead ends: 2227 [2021-11-21 01:07:47,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-21 01:07:47,023 INFO L933 BasicCegarLoop]: 1308 mSDtfsCounter, 41 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 917 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:07:47,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 2092 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 917 Unchecked, 0.1s Time] [2021-11-21 01:07:47,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2021-11-21 01:07:47,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 2227. [2021-11-21 01:07:47,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 1644 states have (on average 1.9105839416058394) internal successors, (3141), 2212 states have internal predecessors, (3141), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-21 01:07:47,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 3185 transitions. [2021-11-21 01:07:47,067 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 3185 transitions. Word has length 53 [2021-11-21 01:07:47,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:07:47,067 INFO L470 AbstractCegarLoop]: Abstraction has 2227 states and 3185 transitions. [2021-11-21 01:07:47,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 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 01:07:47,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 3185 transitions. [2021-11-21 01:07:47,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-21 01:07:47,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:07:47,069 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] [2021-11-21 01:07:47,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-21 01:07:47,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:07:47,282 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:07:47,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:07:47,283 INFO L85 PathProgramCache]: Analyzing trace with hash -61627503, now seen corresponding path program 1 times [2021-11-21 01:07:47,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:07:47,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136022391] [2021-11-21 01:07:47,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:07:47,284 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:07:47,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:07:47,285 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:07:47,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-21 01:07:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:07:47,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:07:47,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:07:47,750 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 01:07:47,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:07:47,814 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 01:07:48,119 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 01:07:48,120 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:07:48,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136022391] [2021-11-21 01:07:48,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136022391] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:07:48,120 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:07:48,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 01:07:48,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240227685] [2021-11-21 01:07:48,121 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:07:48,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:07:48,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:07:48,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:07:48,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:07:48,122 INFO L87 Difference]: Start difference. First operand 2227 states and 3185 transitions. Second operand has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 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 01:07:50,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:07:50,819 INFO L93 Difference]: Finished difference Result 2194 states and 3119 transitions. [2021-11-21 01:07:50,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:07:50,819 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-21 01:07:50,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:07:50,825 INFO L225 Difference]: With dead ends: 2194 [2021-11-21 01:07:50,825 INFO L226 Difference]: Without dead ends: 2194 [2021-11-21 01:07:50,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 104 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 01:07:50,826 INFO L933 BasicCegarLoop]: 672 mSDtfsCounter, 2422 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2433 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:07:50,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2433 Valid, 736 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-21 01:07:50,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2194 states. [2021-11-21 01:07:50,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2194 to 2194. [2021-11-21 01:07:50,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2194 states, 1644 states have (on average 1.8704379562043796) internal successors, (3075), 2179 states have internal predecessors, (3075), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-21 01:07:50,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 3119 transitions. [2021-11-21 01:07:50,868 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 3119 transitions. Word has length 55 [2021-11-21 01:07:50,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:07:50,868 INFO L470 AbstractCegarLoop]: Abstraction has 2194 states and 3119 transitions. [2021-11-21 01:07:50,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 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 01:07:50,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 3119 transitions. [2021-11-21 01:07:50,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-21 01:07:50,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:07:50,869 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] [2021-11-21 01:07:50,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-21 01:07:51,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:07:51,082 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:07:51,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:07:51,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2021-11-21 01:07:51,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:07:51,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134760374] [2021-11-21 01:07:51,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:07:51,084 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:07:51,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:07:51,085 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:07:51,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-21 01:07:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:07:51,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:07:51,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:07:51,380 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 01:07:51,392 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 01:07:51,425 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 01:07:51,436 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 01:07:51,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:07:51,547 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 01:07:51,547 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:07:51,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134760374] [2021-11-21 01:07:51,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134760374] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:07:51,548 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:07:51,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 01:07:51,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555796447] [2021-11-21 01:07:51,548 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:07:51,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:07:51,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:07:51,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:07:51,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:07:51,550 INFO L87 Difference]: Start difference. First operand 2194 states and 3119 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 01:07:55,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:07:55,262 INFO L93 Difference]: Finished difference Result 2193 states and 3117 transitions. [2021-11-21 01:07:55,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:07:55,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-11-21 01:07:55,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:07:55,267 INFO L225 Difference]: With dead ends: 2193 [2021-11-21 01:07:55,267 INFO L226 Difference]: Without dead ends: 2193 [2021-11-21 01:07:55,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 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 01:07:55,268 INFO L933 BasicCegarLoop]: 1289 mSDtfsCounter, 4 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 1832 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3329 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:07:55,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3329 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1832 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-21 01:07:55,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2021-11-21 01:07:55,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2021-11-21 01:07:55,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2193 states, 1644 states have (on average 1.869221411192214) internal successors, (3073), 2178 states have internal predecessors, (3073), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-21 01:07:55,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3117 transitions. [2021-11-21 01:07:55,340 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3117 transitions. Word has length 58 [2021-11-21 01:07:55,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:07:55,341 INFO L470 AbstractCegarLoop]: Abstraction has 2193 states and 3117 transitions. [2021-11-21 01:07:55,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 01:07:55,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3117 transitions. [2021-11-21 01:07:55,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-21 01:07:55,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:07:55,343 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] [2021-11-21 01:07:55,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-21 01:07:55,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:07:55,558 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:07:55,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:07:55,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2021-11-21 01:07:55,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:07:55,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907675720] [2021-11-21 01:07:55,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:07:55,559 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:07:55,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:07:55,561 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:07:55,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-21 01:07:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:07:55,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:07:55,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:07:55,905 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 01:07:55,937 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 01:07:55,945 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 01:07:56,001 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 01:07:56,008 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 01:07:56,031 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 01:07:56,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:07:56,328 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 01:07:56,328 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:07:56,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907675720] [2021-11-21 01:07:56,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907675720] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:07:56,328 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:07:56,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-21 01:07:56,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645742826] [2021-11-21 01:07:56,329 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:07:56,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:07:56,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:07:56,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:07:56,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:07:56,330 INFO L87 Difference]: Start difference. First operand 2193 states and 3117 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 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 01:08:10,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:08:10,715 INFO L93 Difference]: Finished difference Result 2192 states and 3115 transitions. [2021-11-21 01:08:10,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:08:10,716 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 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 58 [2021-11-21 01:08:10,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:08:10,719 INFO L225 Difference]: With dead ends: 2192 [2021-11-21 01:08:10,719 INFO L226 Difference]: Without dead ends: 2192 [2021-11-21 01:08:10,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:08:10,720 INFO L933 BasicCegarLoop]: 1289 mSDtfsCounter, 3 mSDsluCounter, 3290 mSDsCounter, 0 mSdLazyCounter, 3160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4579 SdHoareTripleChecker+Invalid, 3161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:08:10,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 4579 Invalid, 3161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3160 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2021-11-21 01:08:10,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2192 states. [2021-11-21 01:08:10,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2192 to 2192. [2021-11-21 01:08:10,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2192 states, 1642 states have (on average 1.8702801461632157) internal successors, (3071), 2177 states have internal predecessors, (3071), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-21 01:08:10,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2192 states to 2192 states and 3115 transitions. [2021-11-21 01:08:10,764 INFO L78 Accepts]: Start accepts. Automaton has 2192 states and 3115 transitions. Word has length 58 [2021-11-21 01:08:10,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:08:10,765 INFO L470 AbstractCegarLoop]: Abstraction has 2192 states and 3115 transitions. [2021-11-21 01:08:10,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 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 01:08:10,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2192 states and 3115 transitions. [2021-11-21 01:08:10,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-21 01:08:10,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:08:10,766 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] [2021-11-21 01:08:10,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-21 01:08:10,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:08:10,982 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:08:10,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:08:10,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1665547938, now seen corresponding path program 1 times [2021-11-21 01:08:10,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:08:10,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769152862] [2021-11-21 01:08:10,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:08:10,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:08:10,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:08:10,991 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:08:11,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-21 01:08:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:08:11,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:08:11,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:08:11,443 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 01:08:11,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:08:11,618 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 01:08:11,619 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:08:11,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769152862] [2021-11-21 01:08:11,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769152862] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:08:11,619 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:08:11,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-21 01:08:11,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847617140] [2021-11-21 01:08:11,619 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:08:11,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:08:11,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:08:11,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:08:11,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:08:11,621 INFO L87 Difference]: Start difference. First operand 2192 states and 3115 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 01:08:11,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:08:11,795 INFO L93 Difference]: Finished difference Result 2202 states and 3131 transitions. [2021-11-21 01:08:11,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:08:11,796 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 66 [2021-11-21 01:08:11,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:08:11,802 INFO L225 Difference]: With dead ends: 2202 [2021-11-21 01:08:11,802 INFO L226 Difference]: Without dead ends: 2202 [2021-11-21 01:08:11,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 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 01:08:11,804 INFO L933 BasicCegarLoop]: 1287 mSDtfsCounter, 9 mSDsluCounter, 3842 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 5129 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:08:11,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 5129 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:08:11,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2021-11-21 01:08:11,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 2202. [2021-11-21 01:08:11,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 1650 states have (on average 1.8684848484848484) internal successors, (3083), 2186 states have internal predecessors, (3083), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 14 states have call predecessors, (26), 22 states have call successors, (26) [2021-11-21 01:08:11,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 3131 transitions. [2021-11-21 01:08:11,872 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 3131 transitions. Word has length 66 [2021-11-21 01:08:11,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:08:11,873 INFO L470 AbstractCegarLoop]: Abstraction has 2202 states and 3131 transitions. [2021-11-21 01:08:11,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 01:08:11,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 3131 transitions. [2021-11-21 01:08:11,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-21 01:08:11,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:08:11,875 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] [2021-11-21 01:08:11,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-21 01:08:12,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:08:12,090 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:08:12,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:08:12,090 INFO L85 PathProgramCache]: Analyzing trace with hash -564345282, now seen corresponding path program 1 times [2021-11-21 01:08:12,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:08:12,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560306715] [2021-11-21 01:08:12,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:08:12,091 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:08:12,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:08:12,091 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:08:12,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-21 01:08:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:08:12,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:08:12,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:08:12,428 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 01:08:12,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:08:12,674 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 01:08:12,675 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:08:12,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560306715] [2021-11-21 01:08:12,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560306715] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:08:12,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1706000635] [2021-11-21 01:08:12,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:08:12,675 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:08:12,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:08:12,676 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:08:12,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-21 01:08:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:08:12,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:08:12,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:08:13,070 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 01:08:13,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:08:13,234 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 01:08:13,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1706000635] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:08:13,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428482214] [2021-11-21 01:08:13,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:08:13,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:08:13,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:08:13,236 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:08:13,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-21 01:08:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:08:13,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:08:13,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:08:13,609 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 01:08:13,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:08:13,889 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 01:08:13,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428482214] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:08:13,889 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:08:13,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-21 01:08:13,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429901950] [2021-11-21 01:08:13,890 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:08:13,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:08:13,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:08:13,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:08:13,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:08:13,891 INFO L87 Difference]: Start difference. First operand 2202 states and 3131 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 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 01:08:14,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:08:14,596 INFO L93 Difference]: Finished difference Result 2216 states and 3151 transitions. [2021-11-21 01:08:14,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-21 01:08:14,597 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 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 68 [2021-11-21 01:08:14,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:08:14,603 INFO L225 Difference]: With dead ends: 2216 [2021-11-21 01:08:14,603 INFO L226 Difference]: Without dead ends: 2210 [2021-11-21 01:08:14,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-21 01:08:14,604 INFO L933 BasicCegarLoop]: 1287 mSDtfsCounter, 36 mSDsluCounter, 7680 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 8967 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:08:14,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 8967 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 01:08:14,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2210 states. [2021-11-21 01:08:14,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2210 to 2208. [2021-11-21 01:08:14,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2208 states, 1656 states have (on average 1.8659420289855073) internal successors, (3090), 2192 states have internal predecessors, (3090), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 14 states have call predecessors, (26), 22 states have call successors, (26) [2021-11-21 01:08:14,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 3138 transitions. [2021-11-21 01:08:14,651 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 3138 transitions. Word has length 68 [2021-11-21 01:08:14,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:08:14,651 INFO L470 AbstractCegarLoop]: Abstraction has 2208 states and 3138 transitions. [2021-11-21 01:08:14,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 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 01:08:14,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 3138 transitions. [2021-11-21 01:08:14,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-21 01:08:14,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:08:14,652 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] [2021-11-21 01:08:14,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-21 01:08:14,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-21 01:08:15,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-11-21 01:08:15,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:08:15,266 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:08:15,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:08:15,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1076340734, now seen corresponding path program 2 times [2021-11-21 01:08:15,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:08:15,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572829194] [2021-11-21 01:08:15,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:08:15,267 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:08:15,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:08:15,268 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:08:15,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-21 01:08:15,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:08:15,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:08:15,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 01:08:15,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:08:15,932 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 01:08:15,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:08:16,636 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 01:08:16,637 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:08:16,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572829194] [2021-11-21 01:08:16,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572829194] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:08:16,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [379461494] [2021-11-21 01:08:16,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:08:16,637 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:08:16,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:08:16,641 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:08:16,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-21 01:08:17,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:08:17,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:08:17,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 01:08:17,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:08:17,727 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 01:08:17,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:08:18,008 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 01:08:18,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [379461494] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:08:18,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556968382] [2021-11-21 01:08:18,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:08:18,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:08:18,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:08:18,009 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:08:18,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-21 01:08:25,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:08:25,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:08:25,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 01:08:25,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:08:25,354 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 01:08:25,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:08:25,626 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 01:08:25,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556968382] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:08:25,627 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:08:25,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 19 [2021-11-21 01:08:25,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744711939] [2021-11-21 01:08:25,627 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:08:25,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-21 01:08:25,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:08:25,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-21 01:08:25,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-11-21 01:08:25,629 INFO L87 Difference]: Start difference. First operand 2208 states and 3138 transitions. Second operand has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 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 01:08:27,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:08:27,710 INFO L93 Difference]: Finished difference Result 2234 states and 3197 transitions. [2021-11-21 01:08:27,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-21 01:08:27,711 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 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 72 [2021-11-21 01:08:27,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:08:27,717 INFO L225 Difference]: With dead ends: 2234 [2021-11-21 01:08:27,717 INFO L226 Difference]: Without dead ends: 2228 [2021-11-21 01:08:27,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=387, Invalid=735, Unknown=0, NotChecked=0, Total=1122 [2021-11-21 01:08:27,719 INFO L933 BasicCegarLoop]: 1290 mSDtfsCounter, 85 mSDsluCounter, 8999 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 10289 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:08:27,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 10289 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-21 01:08:27,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2021-11-21 01:08:27,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2220. [2021-11-21 01:08:27,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 1668 states have (on average 1.8615107913669064) internal successors, (3105), 2204 states have internal predecessors, (3105), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 14 states have call predecessors, (26), 22 states have call successors, (26) [2021-11-21 01:08:27,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 3153 transitions. [2021-11-21 01:08:27,766 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 3153 transitions. Word has length 72 [2021-11-21 01:08:27,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:08:27,766 INFO L470 AbstractCegarLoop]: Abstraction has 2220 states and 3153 transitions. [2021-11-21 01:08:27,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 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 01:08:27,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 3153 transitions. [2021-11-21 01:08:27,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-21 01:08:27,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:08:27,768 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:08:27,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-21 01:08:28,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-21 01:08:28,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-21 01:08:28,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 01:08:28,394 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-11-21 01:08:28,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:08:28,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1792592766, now seen corresponding path program 3 times [2021-11-21 01:08:28,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:08:28,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255957029] [2021-11-21 01:08:28,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:08:28,395 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:08:28,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:08:28,396 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:08:28,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-21 01:08:29,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-21 01:08:29,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:08:29,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-21 01:08:29,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:08:29,588 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:08:29,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:08:31,261 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:08:31,261 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:08:31,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255957029] [2021-11-21 01:08:31,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255957029] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:08:31,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2134674401] [2021-11-21 01:08:31,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:08:31,262 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:08:31,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:08:31,274 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:08:31,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-21 01:08:37,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-21 01:08:37,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:08:37,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-21 01:08:37,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:08:37,690 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:08:37,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:08:38,242 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:08:38,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2134674401] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:08:38,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859613593] [2021-11-21 01:08:38,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:08:38,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:08:38,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:08:38,243 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:08:38,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080cf7e4-98bf-4c48-8df1-2391e73330f1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process