./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH --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 ff5be3465740cb655882704e7eef418c95d0bbd56a2060e741c7d3e996e58af7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:40:13,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:40:13,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:40:13,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:40:13,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:40:13,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:40:13,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:40:13,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:40:13,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:40:13,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:40:13,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:40:13,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:40:13,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:40:13,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:40:13,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:40:13,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:40:13,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:40:13,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:40:13,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:40:13,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:40:13,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:40:13,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:40:13,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:40:13,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:40:13,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:40:13,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:40:13,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:40:13,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:40:13,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:40:13,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:40:13,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:40:13,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:40:13,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:40:13,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:40:13,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:40:13,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:40:13,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:40:13,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:40:13,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:40:13,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:40:13,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:40:13,661 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-03 03:40:13,707 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:40:13,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:40:13,709 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:40:13,715 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:40:13,715 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:40:13,716 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:40:13,716 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:40:13,716 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:40:13,716 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:40:13,716 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:40:13,717 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:40:13,717 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:40:13,717 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:40:13,717 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:40:13,718 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:40:13,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 03:40:13,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 03:40:13,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:40:13,719 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:40:13,720 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 03:40:13,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:40:13,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:40:13,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:40:13,720 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 03:40:13,721 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 03:40:13,721 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 03:40:13,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:40:13,721 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:40:13,722 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:40:13,722 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:40:13,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:40:13,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:40:13,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:40:13,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:40:13,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:40:13,723 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:40:13,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:40:13,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:40:13,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:40:13,724 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_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff5be3465740cb655882704e7eef418c95d0bbd56a2060e741c7d3e996e58af7 [2021-11-03 03:40:13,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:40:14,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:40:14,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:40:14,008 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:40:14,011 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:40:14,012 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i [2021-11-03 03:40:14,103 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/data/c6001e779/c44ae29a9f854e1791f547e2cf1d45df/FLAGe8158e62a [2021-11-03 03:40:14,770 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:40:14,771 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i [2021-11-03 03:40:14,791 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/data/c6001e779/c44ae29a9f854e1791f547e2cf1d45df/FLAGe8158e62a [2021-11-03 03:40:14,942 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/data/c6001e779/c44ae29a9f854e1791f547e2cf1d45df [2021-11-03 03:40:14,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:40:14,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:40:14,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:40:14,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:40:14,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:40:14,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:14" (1/1) ... [2021-11-03 03:40:14,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1735fa3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:14, skipping insertion in model container [2021-11-03 03:40:14,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:14" (1/1) ... [2021-11-03 03:40:14,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:40:15,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:40:15,644 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[44118,44131] [2021-11-03 03:40:15,659 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[44660,44673] [2021-11-03 03:40:15,803 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[56247,56260] [2021-11-03 03:40:15,804 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[56368,56381] [2021-11-03 03:40:15,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:40:15,821 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 03:40:15,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@68670d36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:15, skipping insertion in model container [2021-11-03 03:40:15,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:40:15,822 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 03:40:15,825 INFO L168 Benchmark]: Toolchain (without parser) took 878.02 ms. Allocated memory is still 104.9 MB. Free memory was 67.6 MB in the beginning and 68.8 MB in the end (delta: -1.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 03:40:15,825 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 79.7 MB. Free memory was 54.1 MB in the beginning and 54.1 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:40:15,826 INFO L168 Benchmark]: CACSL2BoogieTranslator took 859.04 ms. Allocated memory is still 104.9 MB. Free memory was 67.3 MB in the beginning and 68.8 MB in the end (delta: -1.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 03:40:15,828 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 79.7 MB. Free memory was 54.1 MB in the beginning and 54.1 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 859.04 ms. Allocated memory is still 104.9 MB. Free memory was 67.3 MB in the beginning and 68.8 MB in the end (delta: -1.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: 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_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH --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 ff5be3465740cb655882704e7eef418c95d0bbd56a2060e741c7d3e996e58af7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:40:18,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:40:18,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:40:18,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:40:18,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:40:18,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:40:18,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:40:18,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:40:18,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:40:18,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:40:18,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:40:18,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:40:18,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:40:18,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:40:18,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:40:18,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:40:18,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:40:18,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:40:18,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:40:18,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:40:18,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:40:18,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:40:18,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:40:18,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:40:18,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:40:18,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:40:18,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:40:18,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:40:18,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:40:18,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:40:18,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:40:18,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:40:18,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:40:18,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:40:18,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:40:18,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:40:18,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:40:18,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:40:18,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:40:18,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:40:18,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:40:18,169 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-03 03:40:18,223 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:40:18,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:40:18,225 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:40:18,225 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:40:18,225 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:40:18,225 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:40:18,225 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:40:18,226 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:40:18,226 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:40:18,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 03:40:18,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 03:40:18,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:40:18,229 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:40:18,229 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 03:40:18,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:40:18,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:40:18,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:40:18,230 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 03:40:18,230 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 03:40:18,230 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 03:40:18,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:40:18,230 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:40:18,231 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:40:18,231 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:40:18,231 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:40:18,231 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:40:18,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:40:18,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:40:18,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:40:18,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:40:18,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:40:18,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:40:18,233 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:40:18,233 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:40:18,233 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:40:18,233 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:40:18,234 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_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff5be3465740cb655882704e7eef418c95d0bbd56a2060e741c7d3e996e58af7 [2021-11-03 03:40:18,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:40:18,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:40:18,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:40:18,618 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:40:18,619 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:40:18,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i [2021-11-03 03:40:18,699 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/data/6659b968d/54bdb037aa954d089d0816d602abaaa7/FLAGf3039971b [2021-11-03 03:40:19,359 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:40:19,359 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i [2021-11-03 03:40:19,383 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/data/6659b968d/54bdb037aa954d089d0816d602abaaa7/FLAGf3039971b [2021-11-03 03:40:19,567 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/data/6659b968d/54bdb037aa954d089d0816d602abaaa7 [2021-11-03 03:40:19,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:40:19,571 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:40:19,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:40:19,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:40:19,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:40:19,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:19" (1/1) ... [2021-11-03 03:40:19,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53010f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:19, skipping insertion in model container [2021-11-03 03:40:19,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:19" (1/1) ... [2021-11-03 03:40:19,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:40:19,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:40:20,384 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[44118,44131] [2021-11-03 03:40:20,412 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[44660,44673] [2021-11-03 03:40:20,530 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[56247,56260] [2021-11-03 03:40:20,531 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[56368,56381] [2021-11-03 03:40:20,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:40:20,558 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:40:20,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:40:20,598 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[44118,44131] [2021-11-03 03:40:20,600 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[44660,44673] [2021-11-03 03:40:20,729 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[56247,56260] [2021-11-03 03:40:20,730 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[56368,56381] [2021-11-03 03:40:20,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:40:20,741 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:40:20,769 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[44118,44131] [2021-11-03 03:40:20,770 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[44660,44673] [2021-11-03 03:40:20,853 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[56247,56260] [2021-11-03 03:40:20,857 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i[56368,56381] [2021-11-03 03:40:20,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:40:20,928 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:40:20,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:20 WrapperNode [2021-11-03 03:40:20,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:40:20,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:40:20,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:40:20,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:40:20,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:20" (1/1) ... [2021-11-03 03:40:20,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:20" (1/1) ... [2021-11-03 03:40:21,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:40:21,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:40:21,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:40:21,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:40:21,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:20" (1/1) ... [2021-11-03 03:40:21,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:20" (1/1) ... [2021-11-03 03:40:21,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:20" (1/1) ... [2021-11-03 03:40:21,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:20" (1/1) ... [2021-11-03 03:40:21,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:20" (1/1) ... [2021-11-03 03:40:21,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:20" (1/1) ... [2021-11-03 03:40:21,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:20" (1/1) ... [2021-11-03 03:40:21,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:40:21,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:40:21,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:40:21,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:40:21,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:20" (1/1) ... [2021-11-03 03:40:21,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:40:21,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:40:21,307 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:40:21,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:40:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 03:40:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 03:40:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:40:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 03:40:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 03:40:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:40:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 03:40:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:40:21,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 03:40:21,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 03:40:21,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:40:21,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:40:27,518 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:40:27,526 INFO L299 CfgBuilder]: Removed 111 assume(true) statements. [2021-11-03 03:40:27,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:40:27 BoogieIcfgContainer [2021-11-03 03:40:27,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:40:27,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:40:27,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:40:27,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:40:27,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:40:19" (1/3) ... [2021-11-03 03:40:27,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ebcaca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:40:27, skipping insertion in model container [2021-11-03 03:40:27,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:20" (2/3) ... [2021-11-03 03:40:27,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ebcaca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:40:27, skipping insertion in model container [2021-11-03 03:40:27,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:40:27" (3/3) ... [2021-11-03 03:40:27,546 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test6-1.i [2021-11-03 03:40:27,554 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:40:27,554 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 562 error locations. [2021-11-03 03:40:27,603 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:40:27,611 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 [2021-11-03 03:40:27,611 INFO L340 AbstractCegarLoop]: Starting to check reachability of 562 error locations. [2021-11-03 03:40:27,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 1150 states, 587 states have (on average 2.192504258943782) internal successors, (1287), 1149 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:27,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 03:40:27,671 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:27,672 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 03:40:27,673 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-03 03:40:27,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:27,679 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-03 03:40:27,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:27,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47064298] [2021-11-03 03:40:27,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:27,695 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:27,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:27,699 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:27,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:40:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:27,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:40:27,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:28,015 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 [2021-11-03 03:40:28,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:28,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:28,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:28,058 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:28,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [47064298] [2021-11-03 03:40:28,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [47064298] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:28,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:28,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:40:28,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713698918] [2021-11-03 03:40:28,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:40:28,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:28,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:40:28,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:40:28,126 INFO L87 Difference]: Start difference. First operand has 1150 states, 587 states have (on average 2.192504258943782) internal successors, (1287), 1149 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:30,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:30,438 INFO L93 Difference]: Finished difference Result 1133 states and 1191 transitions. [2021-11-03 03:40:30,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:40:30,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-03 03:40:30,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:30,468 INFO L225 Difference]: With dead ends: 1133 [2021-11-03 03:40:30,469 INFO L226 Difference]: Without dead ends: 1131 [2021-11-03 03:40:30,470 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:40:30,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2021-11-03 03:40:30,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1122. [2021-11-03 03:40:30,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 579 states have (on average 2.0397236614853194) internal successors, (1181), 1121 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:30,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1181 transitions. [2021-11-03 03:40:30,625 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1181 transitions. Word has length 3 [2021-11-03 03:40:30,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:30,626 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1181 transitions. [2021-11-03 03:40:30,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:30,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1181 transitions. [2021-11-03 03:40:30,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 03:40:30,627 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:30,627 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 03:40:30,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 03:40:30,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:30,838 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-03 03:40:30,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:30,839 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-03 03:40:30,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:30,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544087705] [2021-11-03 03:40:30,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:30,840 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:30,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:30,844 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:30,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:40:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:30,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:40:30,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:31,010 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 [2021-11-03 03:40:31,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:31,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:31,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:31,095 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:31,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544087705] [2021-11-03 03:40:31,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544087705] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:31,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:31,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 03:40:31,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611652866] [2021-11-03 03:40:31,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:40:31,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:31,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:40:31,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:40:31,104 INFO L87 Difference]: Start difference. First operand 1122 states and 1181 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:36,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:36,801 INFO L93 Difference]: Finished difference Result 1626 states and 1717 transitions. [2021-11-03 03:40:36,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:40:36,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-03 03:40:36,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:36,815 INFO L225 Difference]: With dead ends: 1626 [2021-11-03 03:40:36,815 INFO L226 Difference]: Without dead ends: 1626 [2021-11-03 03:40:36,816 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:40:36,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2021-11-03 03:40:36,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1158. [2021-11-03 03:40:36,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 624 states have (on average 2.0208333333333335) internal successors, (1261), 1157 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:36,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1261 transitions. [2021-11-03 03:40:36,886 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1261 transitions. Word has length 3 [2021-11-03 03:40:36,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:36,886 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 1261 transitions. [2021-11-03 03:40:36,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:36,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1261 transitions. [2021-11-03 03:40:36,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 03:40:36,887 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:36,887 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:36,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:37,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:37,099 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-03 03:40:37,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:37,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1929648752, now seen corresponding path program 1 times [2021-11-03 03:40:37,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:37,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836117621] [2021-11-03 03:40:37,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:37,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:37,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:37,103 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:37,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:40:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:37,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:40:37,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:37,282 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 [2021-11-03 03:40:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:37,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:37,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:37,354 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:37,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836117621] [2021-11-03 03:40:37,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836117621] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:37,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:37,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 03:40:37,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855398120] [2021-11-03 03:40:37,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:40:37,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:37,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:40:37,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:40:37,357 INFO L87 Difference]: Start difference. First operand 1158 states and 1261 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:39,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:39,997 INFO L93 Difference]: Finished difference Result 1520 states and 1648 transitions. [2021-11-03 03:40:39,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:40:39,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-11-03 03:40:39,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:40,026 INFO L225 Difference]: With dead ends: 1520 [2021-11-03 03:40:40,026 INFO L226 Difference]: Without dead ends: 1520 [2021-11-03 03:40:40,026 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:40:40,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-11-03 03:40:40,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1110. [2021-11-03 03:40:40,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 624 states have (on average 1.939102564102564) internal successors, (1210), 1109 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:40,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1210 transitions. [2021-11-03 03:40:40,057 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1210 transitions. Word has length 9 [2021-11-03 03:40:40,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:40,060 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 1210 transitions. [2021-11-03 03:40:40,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:40,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1210 transitions. [2021-11-03 03:40:40,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 03:40:40,061 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:40,061 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:40,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:40,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:40,276 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-03 03:40:40,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:40,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1929648753, now seen corresponding path program 1 times [2021-11-03 03:40:40,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:40,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057542106] [2021-11-03 03:40:40,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:40,278 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:40,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:40,279 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:40,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:40:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:40,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:40:40,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:40,444 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 [2021-11-03 03:40:40,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:40,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:40,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:40,652 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:40,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057542106] [2021-11-03 03:40:40,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057542106] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:40,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:40,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 03:40:40,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437570372] [2021-11-03 03:40:40,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:40:40,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:40,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:40:40,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:40:40,654 INFO L87 Difference]: Start difference. First operand 1110 states and 1210 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:47,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:47,560 INFO L93 Difference]: Finished difference Result 1585 states and 1677 transitions. [2021-11-03 03:40:47,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:40:47,561 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 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 9 [2021-11-03 03:40:47,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:47,569 INFO L225 Difference]: With dead ends: 1585 [2021-11-03 03:40:47,569 INFO L226 Difference]: Without dead ends: 1585 [2021-11-03 03:40:47,569 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:40:47,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2021-11-03 03:40:47,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1100. [2021-11-03 03:40:47,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 624 states have (on average 1.9182692307692308) internal successors, (1197), 1099 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:47,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1197 transitions. [2021-11-03 03:40:47,598 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1197 transitions. Word has length 9 [2021-11-03 03:40:47,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:47,598 INFO L470 AbstractCegarLoop]: Abstraction has 1100 states and 1197 transitions. [2021-11-03 03:40:47,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:47,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1197 transitions. [2021-11-03 03:40:47,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 03:40:47,600 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:47,600 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:47,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-03 03:40:47,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:47,812 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr555ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-03 03:40:47,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:47,814 INFO L85 PathProgramCache]: Analyzing trace with hash -2075071052, now seen corresponding path program 1 times [2021-11-03 03:40:47,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:47,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893755291] [2021-11-03 03:40:47,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:47,823 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:47,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:47,824 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:47,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:40:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:47,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:40:47,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:48,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:48,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:48,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:48,154 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:48,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893755291] [2021-11-03 03:40:48,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893755291] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:48,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:48,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 03:40:48,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867641831] [2021-11-03 03:40:48,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:40:48,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:48,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:40:48,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:40:48,157 INFO L87 Difference]: Start difference. First operand 1100 states and 1197 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:48,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:48,964 INFO L93 Difference]: Finished difference Result 1584 states and 1713 transitions. [2021-11-03 03:40:48,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:40:48,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 [2021-11-03 03:40:48,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:48,974 INFO L225 Difference]: With dead ends: 1584 [2021-11-03 03:40:48,975 INFO L226 Difference]: Without dead ends: 1584 [2021-11-03 03:40:48,975 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:40:48,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-11-03 03:40:49,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1338. [2021-11-03 03:40:49,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 862 states have (on average 1.9129930394431554) internal successors, (1649), 1337 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:49,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1649 transitions. [2021-11-03 03:40:49,031 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1649 transitions. Word has length 11 [2021-11-03 03:40:49,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:49,032 INFO L470 AbstractCegarLoop]: Abstraction has 1338 states and 1649 transitions. [2021-11-03 03:40:49,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:49,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1649 transitions. [2021-11-03 03:40:49,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 03:40:49,033 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:49,033 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:49,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:49,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:49,246 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr359REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-03 03:40:49,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:49,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1895000204, now seen corresponding path program 1 times [2021-11-03 03:40:49,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:49,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936030711] [2021-11-03 03:40:49,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:49,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:49,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:49,249 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:49,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 03:40:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:49,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:40:49,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:49,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:49,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:49,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:49,483 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:49,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936030711] [2021-11-03 03:40:49,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936030711] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:49,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:49,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:40:49,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283629836] [2021-11-03 03:40:49,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:40:49,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:49,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:40:49,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:40:49,486 INFO L87 Difference]: Start difference. First operand 1338 states and 1649 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:49,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:49,525 INFO L93 Difference]: Finished difference Result 1309 states and 1595 transitions. [2021-11-03 03:40:49,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:40:49,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 [2021-11-03 03:40:49,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:49,533 INFO L225 Difference]: With dead ends: 1309 [2021-11-03 03:40:49,533 INFO L226 Difference]: Without dead ends: 1309 [2021-11-03 03:40:49,534 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:40:49,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2021-11-03 03:40:49,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1278. [2021-11-03 03:40:49,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 826 states have (on average 1.8922518159806296) internal successors, (1563), 1277 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:49,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1563 transitions. [2021-11-03 03:40:49,564 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1563 transitions. Word has length 13 [2021-11-03 03:40:49,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:49,565 INFO L470 AbstractCegarLoop]: Abstraction has 1278 states and 1563 transitions. [2021-11-03 03:40:49,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:49,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1563 transitions. [2021-11-03 03:40:49,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 03:40:49,567 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:49,567 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:49,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:49,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:49,795 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr558ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-03 03:40:49,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:49,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1278447871, now seen corresponding path program 1 times [2021-11-03 03:40:49,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:49,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522521097] [2021-11-03 03:40:49,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:49,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:49,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:49,798 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:49,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:40:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:50,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:40:50,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:50,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:40:50,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:40:50,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:40:50,080 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-03 03:40:50,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-03 03:40:50,148 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-03 03:40:50,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-03 03:40:50,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:50,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:50,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:50,261 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:50,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522521097] [2021-11-03 03:40:50,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522521097] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:50,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:50,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:40:50,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572795735] [2021-11-03 03:40:50,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:40:50,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:50,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:40:50,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:40:50,264 INFO L87 Difference]: Start difference. First operand 1278 states and 1563 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) [2021-11-03 03:40:52,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:52,106 INFO L93 Difference]: Finished difference Result 1630 states and 1973 transitions. [2021-11-03 03:40:52,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:40:52,107 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 [2021-11-03 03:40:52,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:52,114 INFO L225 Difference]: With dead ends: 1630 [2021-11-03 03:40:52,114 INFO L226 Difference]: Without dead ends: 1630 [2021-11-03 03:40:52,114 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:40:52,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2021-11-03 03:40:52,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1277. [2021-11-03 03:40:52,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 825 states have (on average 1.892121212121212) internal successors, (1561), 1276 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:52,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1561 transitions. [2021-11-03 03:40:52,142 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1561 transitions. Word has length 13 [2021-11-03 03:40:52,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:52,142 INFO L470 AbstractCegarLoop]: Abstraction has 1277 states and 1561 transitions. [2021-11-03 03:40:52,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) [2021-11-03 03:40:52,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1561 transitions. [2021-11-03 03:40:52,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-03 03:40:52,144 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:52,144 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:52,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:52,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:52,356 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-03 03:40:52,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:52,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1153072931, now seen corresponding path program 1 times [2021-11-03 03:40:52,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:52,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532237920] [2021-11-03 03:40:52,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:52,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:52,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:52,358 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:52,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 03:40:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:52,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:40:52,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:52,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:52,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:52,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:52,625 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:52,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532237920] [2021-11-03 03:40:52,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532237920] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:52,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:52,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:40:52,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468750632] [2021-11-03 03:40:52,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:40:52,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:52,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:40:52,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:40:52,628 INFO L87 Difference]: Start difference. First operand 1277 states and 1561 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:52,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:52,661 INFO L93 Difference]: Finished difference Result 1217 states and 1475 transitions. [2021-11-03 03:40:52,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:40:52,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 19 [2021-11-03 03:40:52,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:52,667 INFO L225 Difference]: With dead ends: 1217 [2021-11-03 03:40:52,668 INFO L226 Difference]: Without dead ends: 1217 [2021-11-03 03:40:52,668 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:40:52,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2021-11-03 03:40:52,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1217. [2021-11-03 03:40:52,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 789 states have (on average 1.8694550063371356) internal successors, (1475), 1216 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:52,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1475 transitions. [2021-11-03 03:40:52,692 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1475 transitions. Word has length 19 [2021-11-03 03:40:52,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:52,693 INFO L470 AbstractCegarLoop]: Abstraction has 1217 states and 1475 transitions. [2021-11-03 03:40:52,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:52,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1475 transitions. [2021-11-03 03:40:52,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-03 03:40:52,694 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:52,694 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:52,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:52,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:52,909 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-03 03:40:52,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:52,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1529130, now seen corresponding path program 1 times [2021-11-03 03:40:52,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:52,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005385687] [2021-11-03 03:40:52,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:52,910 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:52,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:52,911 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:52,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 03:40:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:53,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:40:53,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:53,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:53,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:53,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:53,195 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:53,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005385687] [2021-11-03 03:40:53,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1005385687] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:53,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:53,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 03:40:53,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037646559] [2021-11-03 03:40:53,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:40:53,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:53,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:40:53,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:40:53,196 INFO L87 Difference]: Start difference. First operand 1217 states and 1475 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:53,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:53,256 INFO L93 Difference]: Finished difference Result 1189 states and 1419 transitions. [2021-11-03 03:40:53,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:40:53,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 21 [2021-11-03 03:40:53,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:53,261 INFO L225 Difference]: With dead ends: 1189 [2021-11-03 03:40:53,261 INFO L226 Difference]: Without dead ends: 1189 [2021-11-03 03:40:53,262 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:40:53,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2021-11-03 03:40:53,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1187. [2021-11-03 03:40:53,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 773 states have (on average 1.833117723156533) internal successors, (1417), 1186 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:53,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1417 transitions. [2021-11-03 03:40:53,287 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1417 transitions. Word has length 21 [2021-11-03 03:40:53,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:53,288 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 1417 transitions. [2021-11-03 03:40:53,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:53,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1417 transitions. [2021-11-03 03:40:53,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-03 03:40:53,289 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:53,289 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:53,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:53,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:53,501 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-03 03:40:53,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:53,502 INFO L85 PathProgramCache]: Analyzing trace with hash 270814884, now seen corresponding path program 1 times [2021-11-03 03:40:53,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:53,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236108165] [2021-11-03 03:40:53,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:53,503 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:53,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:53,503 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:53,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 03:40:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:53,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:40:53,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:53,721 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 [2021-11-03 03:40:53,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:53,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:54,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:54,004 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:54,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [236108165] [2021-11-03 03:40:54,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [236108165] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:54,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:54,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 03:40:54,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483062479] [2021-11-03 03:40:54,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:40:54,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:54,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:40:54,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:40:54,006 INFO L87 Difference]: Start difference. First operand 1187 states and 1417 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:56,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:56,463 INFO L93 Difference]: Finished difference Result 1638 states and 1987 transitions. [2021-11-03 03:40:56,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:40:56,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2021-11-03 03:40:56,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:56,470 INFO L225 Difference]: With dead ends: 1638 [2021-11-03 03:40:56,470 INFO L226 Difference]: Without dead ends: 1638 [2021-11-03 03:40:56,470 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:40:56,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2021-11-03 03:40:56,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1183. [2021-11-03 03:40:56,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 773 states have (on average 1.8227684346701165) internal successors, (1409), 1182 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:56,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1409 transitions. [2021-11-03 03:40:56,494 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1409 transitions. Word has length 35 [2021-11-03 03:40:56,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:56,494 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 1409 transitions. [2021-11-03 03:40:56,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:56,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1409 transitions. [2021-11-03 03:40:56,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-03 03:40:56,496 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:56,496 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:56,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:56,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:56,708 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-03 03:40:56,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:56,708 INFO L85 PathProgramCache]: Analyzing trace with hash 270814885, now seen corresponding path program 1 times [2021-11-03 03:40:56,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:56,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826627611] [2021-11-03 03:40:56,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:56,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:56,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:56,710 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:56,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 03:40:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:56,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 03:40:56,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:56,976 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 [2021-11-03 03:40:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:57,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:57,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:57,844 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:57,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826627611] [2021-11-03 03:40:57,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826627611] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:57,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:57,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-03 03:40:57,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715338167] [2021-11-03 03:40:57,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:40:57,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:57,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:40:57,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:40:57,847 INFO L87 Difference]: Start difference. First operand 1183 states and 1409 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:06,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:06,216 INFO L93 Difference]: Finished difference Result 1772 states and 2119 transitions. [2021-11-03 03:41:06,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:41:06,217 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 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 35 [2021-11-03 03:41:06,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:06,224 INFO L225 Difference]: With dead ends: 1772 [2021-11-03 03:41:06,225 INFO L226 Difference]: Without dead ends: 1772 [2021-11-03 03:41:06,225 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:41:06,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2021-11-03 03:41:06,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1179. [2021-11-03 03:41:06,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 773 states have (on average 1.8124191461836998) internal successors, (1401), 1178 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:06,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1401 transitions. [2021-11-03 03:41:06,248 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1401 transitions. Word has length 35 [2021-11-03 03:41:06,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:06,249 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1401 transitions. [2021-11-03 03:41:06,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:06,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1401 transitions. [2021-11-03 03:41:06,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 03:41:06,251 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:06,251 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:41:06,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:06,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:41:06,463 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-03 03:41:06,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:06,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1615578914, now seen corresponding path program 1 times [2021-11-03 03:41:06,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:06,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183580135] [2021-11-03 03:41:06,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:06,464 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:06,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:06,465 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:06,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 03:41:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:06,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:41:06,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:06,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:41:06,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:07,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:41:07,126 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:07,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183580135] [2021-11-03 03:41:07,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183580135] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:07,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:07,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 03:41:07,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322681251] [2021-11-03 03:41:07,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:41:07,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:07,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:41:07,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:41:07,129 INFO L87 Difference]: Start difference. First operand 1179 states and 1401 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:07,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:07,224 INFO L93 Difference]: Finished difference Result 1167 states and 1381 transitions. [2021-11-03 03:41:07,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:41:07,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-03 03:41:07,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:07,231 INFO L225 Difference]: With dead ends: 1167 [2021-11-03 03:41:07,232 INFO L226 Difference]: Without dead ends: 1167 [2021-11-03 03:41:07,232 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:41:07,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2021-11-03 03:41:07,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1167. [2021-11-03 03:41:07,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 761 states have (on average 1.8147174770039423) internal successors, (1381), 1166 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:07,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1381 transitions. [2021-11-03 03:41:07,261 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1381 transitions. Word has length 53 [2021-11-03 03:41:07,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:07,263 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 1381 transitions. [2021-11-03 03:41:07,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:07,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1381 transitions. [2021-11-03 03:41:07,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 03:41:07,269 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:07,269 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:41:07,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:07,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:41:07,484 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-03 03:41:07,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:07,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1057136622, now seen corresponding path program 1 times [2021-11-03 03:41:07,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:07,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797225861] [2021-11-03 03:41:07,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:07,485 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:07,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:07,486 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:07,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 03:41:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:07,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:41:07,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:07,997 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-11-03 03:41:07,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 37 [2021-11-03 03:41:08,201 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-03 03:41:08,201 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 16 treesize of output 21 [2021-11-03 03:41:08,312 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-03 03:41:08,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2021-11-03 03:41:08,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:41:08,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:09,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:41:09,196 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:09,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797225861] [2021-11-03 03:41:09,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797225861] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:09,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:09,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 03:41:09,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392751945] [2021-11-03 03:41:09,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 03:41:09,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:09,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 03:41:09,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:41:09,199 INFO L87 Difference]: Start difference. First operand 1167 states and 1381 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:14,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:14,336 INFO L93 Difference]: Finished difference Result 2592 states and 3072 transitions. [2021-11-03 03:41:14,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:41:14,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 61 [2021-11-03 03:41:14,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:14,347 INFO L225 Difference]: With dead ends: 2592 [2021-11-03 03:41:14,347 INFO L226 Difference]: Without dead ends: 2592 [2021-11-03 03:41:14,347 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:41:14,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2021-11-03 03:41:14,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 1408. [2021-11-03 03:41:14,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1004 states have (on average 1.7778884462151394) internal successors, (1785), 1407 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:14,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 1785 transitions. [2021-11-03 03:41:14,374 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 1785 transitions. Word has length 61 [2021-11-03 03:41:14,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:14,374 INFO L470 AbstractCegarLoop]: Abstraction has 1408 states and 1785 transitions. [2021-11-03 03:41:14,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:14,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 1785 transitions. [2021-11-03 03:41:14,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 03:41:14,376 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:14,376 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:41:14,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:14,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:41:14,592 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-03 03:41:14,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:14,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1057136623, now seen corresponding path program 1 times [2021-11-03 03:41:14,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:14,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [443977722] [2021-11-03 03:41:14,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:14,593 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:14,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:14,595 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:14,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 03:41:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:15,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 03:41:15,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:15,243 INFO L354 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-11-03 03:41:15,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 42 [2021-11-03 03:41:15,322 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-11-03 03:41:15,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 63 [2021-11-03 03:41:15,531 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-11-03 03:41:15,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 51 [2021-11-03 03:41:15,556 INFO L354 Elim1Store]: treesize reduction 2, result has 92.0 percent of original size [2021-11-03 03:41:15,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 64 [2021-11-03 03:41:15,909 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-11-03 03:41:15,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 30 [2021-11-03 03:41:22,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:41:22,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:24,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:41:24,707 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:24,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [443977722] [2021-11-03 03:41:24,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [443977722] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:24,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:24,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 9 [2021-11-03 03:41:24,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84230490] [2021-11-03 03:41:24,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 03:41:24,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:24,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 03:41:24,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:41:24,710 INFO L87 Difference]: Start difference. First operand 1408 states and 1785 transitions. Second operand has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:51,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:51,536 INFO L93 Difference]: Finished difference Result 1418 states and 1796 transitions. [2021-11-03 03:41:51,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 03:41:51,537 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 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 61 [2021-11-03 03:41:51,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:51,545 INFO L225 Difference]: With dead ends: 1418 [2021-11-03 03:41:51,545 INFO L226 Difference]: Without dead ends: 1418 [2021-11-03 03:41:51,545 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-03 03:41:51,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2021-11-03 03:41:51,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1412. [2021-11-03 03:41:51,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1008 states have (on average 1.7748015873015872) internal successors, (1789), 1411 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:51,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1789 transitions. [2021-11-03 03:41:51,569 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1789 transitions. Word has length 61 [2021-11-03 03:41:51,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:51,569 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 1789 transitions. [2021-11-03 03:41:51,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:51,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1789 transitions. [2021-11-03 03:41:51,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-03 03:41:51,571 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:51,571 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:41:51,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-03 03:41:51,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:41:51,786 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr72ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-03 03:41:51,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:51,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1137699215, now seen corresponding path program 1 times [2021-11-03 03:41:51,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:51,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108090407] [2021-11-03 03:41:51,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:51,787 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:51,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:51,788 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:51,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 03:41:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:52,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:41:52,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:52,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:41:52,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:52,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:41:52,582 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:52,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108090407] [2021-11-03 03:41:52,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1108090407] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:52,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:52,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 03:41:52,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344873475] [2021-11-03 03:41:52,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:41:52,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:52,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:41:52,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:41:52,584 INFO L87 Difference]: Start difference. First operand 1412 states and 1789 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:52,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:52,816 INFO L93 Difference]: Finished difference Result 4066 states and 5199 transitions. [2021-11-03 03:41:52,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:41:52,817 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-03 03:41:52,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:52,834 INFO L225 Difference]: With dead ends: 4066 [2021-11-03 03:41:52,834 INFO L226 Difference]: Without dead ends: 4066 [2021-11-03 03:41:52,835 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:41:52,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4066 states. [2021-11-03 03:41:52,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4066 to 1410. [2021-11-03 03:41:52,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1007 states have (on average 1.7745779543197617) internal successors, (1787), 1409 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:52,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 1787 transitions. [2021-11-03 03:41:52,875 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 1787 transitions. Word has length 65 [2021-11-03 03:41:52,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:52,876 INFO L470 AbstractCegarLoop]: Abstraction has 1410 states and 1787 transitions. [2021-11-03 03:41:52,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:52,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 1787 transitions. [2021-11-03 03:41:52,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 03:41:52,876 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:52,876 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:41:52,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:53,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:41:53,077 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-03 03:41:53,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:53,077 INFO L85 PathProgramCache]: Analyzing trace with hash -908630116, now seen corresponding path program 1 times [2021-11-03 03:41:53,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:53,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733351426] [2021-11-03 03:41:53,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:53,079 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:53,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:53,080 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:53,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 03:41:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:53,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:41:53,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:53,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:41:53,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:54,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:41:54,132 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:54,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733351426] [2021-11-03 03:41:54,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733351426] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:54,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:54,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 03:41:54,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327136667] [2021-11-03 03:41:54,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:41:54,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:54,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:41:54,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:41:54,135 INFO L87 Difference]: Start difference. First operand 1410 states and 1787 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:54,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:54,262 INFO L93 Difference]: Finished difference Result 3283 states and 4130 transitions. [2021-11-03 03:41:54,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:41:54,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-03 03:41:54,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:54,278 INFO L225 Difference]: With dead ends: 3283 [2021-11-03 03:41:54,279 INFO L226 Difference]: Without dead ends: 3283 [2021-11-03 03:41:54,279 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:41:54,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3283 states. [2021-11-03 03:41:54,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3283 to 1666. [2021-11-03 03:41:54,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1263 states have (on average 1.7806809184481394) internal successors, (2249), 1665 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:54,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 2249 transitions. [2021-11-03 03:41:54,324 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 2249 transitions. Word has length 66 [2021-11-03 03:41:54,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:54,324 INFO L470 AbstractCegarLoop]: Abstraction has 1666 states and 2249 transitions. [2021-11-03 03:41:54,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:41:54,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 2249 transitions. [2021-11-03 03:41:54,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 03:41:54,326 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:54,346 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:41:54,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:54,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:41:54,547 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-03 03:41:54,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:54,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1887851608, now seen corresponding path program 1 times [2021-11-03 03:41:54,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:54,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966756584] [2021-11-03 03:41:54,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:54,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:54,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:54,551 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:54,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 03:41:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:55,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 03:41:55,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:55,278 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 [2021-11-03 03:41:55,288 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 [2021-11-03 03:41:56,148 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-03 03:41:56,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-03 03:41:56,157 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 03:41:56,157 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 21 treesize of output 21 [2021-11-03 03:41:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:41:56,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:41:59,016 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:59,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966756584] [2021-11-03 03:41:59,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966756584] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:59,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:59,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-03 03:41:59,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125768328] [2021-11-03 03:41:59,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:41:59,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:59,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:41:59,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:41:59,019 INFO L87 Difference]: Start difference. First operand 1666 states and 2249 transitions. Second operand has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 8 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:04,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:04,356 INFO L93 Difference]: Finished difference Result 2076 states and 2757 transitions. [2021-11-03 03:42:04,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:42:04,356 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 8 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-03 03:42:04,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:04,362 INFO L225 Difference]: With dead ends: 2076 [2021-11-03 03:42:04,362 INFO L226 Difference]: Without dead ends: 2076 [2021-11-03 03:42:04,363 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:42:04,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2021-11-03 03:42:04,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 1627. [2021-11-03 03:42:04,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 1263 states have (on average 1.7292161520190024) internal successors, (2184), 1626 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:04,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 2184 transitions. [2021-11-03 03:42:04,394 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 2184 transitions. Word has length 67 [2021-11-03 03:42:04,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:04,395 INFO L470 AbstractCegarLoop]: Abstraction has 1627 states and 2184 transitions. [2021-11-03 03:42:04,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 8 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:04,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 2184 transitions. [2021-11-03 03:42:04,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 03:42:04,396 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:04,396 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:04,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:04,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:04,602 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr79ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-03 03:42:04,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:04,602 INFO L85 PathProgramCache]: Analyzing trace with hash -322193671, now seen corresponding path program 1 times [2021-11-03 03:42:04,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:04,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453124541] [2021-11-03 03:42:04,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:04,603 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:04,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:04,604 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:04,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 03:42:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:05,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 03:42:05,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:05,406 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 [2021-11-03 03:42:05,427 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 [2021-11-03 03:42:05,461 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 [2021-11-03 03:42:05,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:05,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:05,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:05,673 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:05,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453124541] [2021-11-03 03:42:05,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453124541] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:05,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:05,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-03 03:42:05,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444190976] [2021-11-03 03:42:05,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 03:42:05,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:05,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 03:42:05,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:42:05,678 INFO L87 Difference]: Start difference. First operand 1627 states and 2184 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:11,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:11,129 INFO L93 Difference]: Finished difference Result 2058 states and 2591 transitions. [2021-11-03 03:42:11,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:42:11,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-11-03 03:42:11,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:11,133 INFO L225 Difference]: With dead ends: 2058 [2021-11-03 03:42:11,133 INFO L226 Difference]: Without dead ends: 2058 [2021-11-03 03:42:11,133 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 137 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-11-03 03:42:11,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2021-11-03 03:42:11,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 1626. [2021-11-03 03:42:11,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1263 states have (on average 1.728424386381631) internal successors, (2183), 1625 states have internal predecessors, (2183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:11,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 2183 transitions. [2021-11-03 03:42:11,165 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 2183 transitions. Word has length 73 [2021-11-03 03:42:11,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:11,165 INFO L470 AbstractCegarLoop]: Abstraction has 1626 states and 2183 transitions. [2021-11-03 03:42:11,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:11,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 2183 transitions. [2021-11-03 03:42:11,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-03 03:42:11,167 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:11,167 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:11,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:11,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:11,391 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr80ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-03 03:42:11,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:11,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1398068850, now seen corresponding path program 1 times [2021-11-03 03:42:11,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:11,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674697496] [2021-11-03 03:42:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:11,392 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:11,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:11,393 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:11,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-03 03:42:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:12,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-03 03:42:12,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:12,251 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 [2021-11-03 03:42:12,293 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 [2021-11-03 03:42:12,301 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 [2021-11-03 03:42:12,362 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 [2021-11-03 03:42:12,365 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 [2021-11-03 03:42:12,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:12,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:13,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:13,161 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:13,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674697496] [2021-11-03 03:42:13,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674697496] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:13,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:13,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-03 03:42:13,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053087628] [2021-11-03 03:42:13,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 03:42:13,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:13,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 03:42:13,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-03 03:42:13,164 INFO L87 Difference]: Start difference. First operand 1626 states and 2183 transitions. Second operand has 14 states, 13 states have (on average 6.846153846153846) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:38,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:38,646 INFO L93 Difference]: Finished difference Result 3432 states and 4470 transitions. [2021-11-03 03:42:38,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 03:42:38,647 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.846153846153846) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 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 74 [2021-11-03 03:42:38,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:38,652 INFO L225 Difference]: With dead ends: 3432 [2021-11-03 03:42:38,653 INFO L226 Difference]: Without dead ends: 3432 [2021-11-03 03:42:38,653 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2021-11-03 03:42:38,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3432 states. [2021-11-03 03:42:38,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3432 to 1625. [2021-11-03 03:42:38,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1263 states have (on average 1.7276326207442596) internal successors, (2182), 1624 states have internal predecessors, (2182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:38,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 2182 transitions. [2021-11-03 03:42:38,694 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 2182 transitions. Word has length 74 [2021-11-03 03:42:38,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:38,695 INFO L470 AbstractCegarLoop]: Abstraction has 1625 states and 2182 transitions. [2021-11-03 03:42:38,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.846153846153846) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:38,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 2182 transitions. [2021-11-03 03:42:38,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 03:42:38,696 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:38,696 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:38,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:38,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:38,914 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-03 03:42:38,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:38,915 INFO L85 PathProgramCache]: Analyzing trace with hash -2080731706, now seen corresponding path program 1 times [2021-11-03 03:42:38,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:38,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065192602] [2021-11-03 03:42:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:38,916 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:38,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:38,917 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:38,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-03 03:42:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:39,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:42:39,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:40,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:40,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:40,271 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:40,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065192602] [2021-11-03 03:42:40,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1065192602] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:40,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:40,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:42:40,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857022846] [2021-11-03 03:42:40,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:42:40,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:40,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:42:40,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:42:40,274 INFO L87 Difference]: Start difference. First operand 1625 states and 2182 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:40,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:40,389 INFO L93 Difference]: Finished difference Result 2256 states and 2920 transitions. [2021-11-03 03:42:40,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:42:40,398 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 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 79 [2021-11-03 03:42:40,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:40,403 INFO L225 Difference]: With dead ends: 2256 [2021-11-03 03:42:40,403 INFO L226 Difference]: Without dead ends: 2256 [2021-11-03 03:42:40,403 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:42:40,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2021-11-03 03:42:40,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 1628. [2021-11-03 03:42:40,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1266 states have (on average 1.7259083728278042) internal successors, (2185), 1627 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:40,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 2185 transitions. [2021-11-03 03:42:40,423 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 2185 transitions. Word has length 79 [2021-11-03 03:42:40,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:40,423 INFO L470 AbstractCegarLoop]: Abstraction has 1628 states and 2185 transitions. [2021-11-03 03:42:40,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:40,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 2185 transitions. [2021-11-03 03:42:40,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-03 03:42:40,424 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:40,425 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:40,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:40,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:40,638 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-03 03:42:40,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:40,638 INFO L85 PathProgramCache]: Analyzing trace with hash -21710874, now seen corresponding path program 1 times [2021-11-03 03:42:40,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:40,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105126464] [2021-11-03 03:42:40,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:40,639 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:40,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:40,640 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:40,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-03 03:42:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:41,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:42:41,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:41,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:41,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:41,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:41,943 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:41,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105126464] [2021-11-03 03:42:41,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105126464] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:42:41,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [442961054] [2021-11-03 03:42:41,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:41,943 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:42:41,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:42:41,945 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:42:41,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-03 03:42:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:43,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:42:43,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:43,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:43,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:43,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [442961054] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:42:43,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892290477] [2021-11-03 03:42:43,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:43,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:42:43,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:42:43,520 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:42:43,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-03 03:42:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:44,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:42:44,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:44,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:44,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:45,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:45,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892290477] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:42:45,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 03:42:45,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-11-03 03:42:45,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470689169] [2021-11-03 03:42:45,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 03:42:45,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:45,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 03:42:45,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:42:45,123 INFO L87 Difference]: Start difference. First operand 1628 states and 2185 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:45,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:45,505 INFO L93 Difference]: Finished difference Result 2262 states and 2926 transitions. [2021-11-03 03:42:45,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 03:42:45,506 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 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 81 [2021-11-03 03:42:45,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:45,511 INFO L225 Difference]: With dead ends: 2262 [2021-11-03 03:42:45,511 INFO L226 Difference]: Without dead ends: 2262 [2021-11-03 03:42:45,511 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2021-11-03 03:42:45,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2021-11-03 03:42:45,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1634. [2021-11-03 03:42:45,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1272 states have (on average 1.7224842767295598) internal successors, (2191), 1633 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:45,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2191 transitions. [2021-11-03 03:42:45,543 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2191 transitions. Word has length 81 [2021-11-03 03:42:45,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:45,544 INFO L470 AbstractCegarLoop]: Abstraction has 1634 states and 2191 transitions. [2021-11-03 03:42:45,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:45,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2191 transitions. [2021-11-03 03:42:45,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 03:42:45,546 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:45,546 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:45,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:45,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:45,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:46,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:46,166 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-03 03:42:46,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:46,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1830489050, now seen corresponding path program 2 times [2021-11-03 03:42:46,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:46,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792533329] [2021-11-03 03:42:46,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:42:46,167 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:46,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:46,169 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:46,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-03 03:42:47,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:42:47,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:42:47,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 03:42:47,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:47,879 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:47,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:48,433 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:48,433 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:48,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792533329] [2021-11-03 03:42:48,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1792533329] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:42:48,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [912927748] [2021-11-03 03:42:48,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:42:48,434 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:42:48,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:42:48,435 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:42:48,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-03 03:42:50,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:42:50,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:42:50,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 03:42:50,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:50,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:51,023 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:51,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [912927748] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:42:51,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768013350] [2021-11-03 03:42:51,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:42:51,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:42:51,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:42:51,026 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:42:51,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-03 03:43:55,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:43:55,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:43:55,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-03 03:43:55,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:43:56,053 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 03:43:56,053 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 16 treesize of output 16 [2021-11-03 03:43:56,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-03 03:43:56,416 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-03 03:43:56,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 26 [2021-11-03 03:43:57,278 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 03:43:57,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 38 [2021-11-03 03:43:57,477 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 03:43:57,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 38 [2021-11-03 03:44:02,468 INFO L354 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2021-11-03 03:44:02,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 42 [2021-11-03 03:44:03,454 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 03:44:03,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 38 [2021-11-03 03:44:07,647 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 03:44:07,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 48 [2021-11-03 03:44:08,928 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-03 03:44:08,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 27 [2021-11-03 03:44:08,986 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 03:44:08,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:55,187 INFO L354 Elim1Store]: treesize reduction 5, result has 88.6 percent of original size [2021-11-03 03:45:55,188 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 66 treesize of output 65 [2021-11-03 03:46:03,745 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 14 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:46:03,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768013350] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:46:03,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 03:46:03,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 11, 14] total 40 [2021-11-03 03:46:03,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385844219] [2021-11-03 03:46:03,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-03 03:46:03,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:46:03,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-03 03:46:03,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1337, Unknown=38, NotChecked=0, Total=1560 [2021-11-03 03:46:03,750 INFO L87 Difference]: Start difference. First operand 1634 states and 2191 transitions. Second operand has 40 states, 40 states have (on average 6.125) internal successors, (245), 40 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:52,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:47:52,137 INFO L93 Difference]: Finished difference Result 4480 states and 5700 transitions. [2021-11-03 03:47:52,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-03 03:47:52,141 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.125) internal successors, (245), 40 states have internal predecessors, (245), 0 states have call successors, (0), 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 85 [2021-11-03 03:47:52,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:47:52,154 INFO L225 Difference]: With dead ends: 4480 [2021-11-03 03:47:52,154 INFO L226 Difference]: Without dead ends: 4480 [2021-11-03 03:47:52,159 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 463 SyntacticMatches, 6 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2093 ImplicationChecksByTransitivity, 138.9s TimeCoverageRelationStatistics Valid=1451, Invalid=5817, Unknown=42, NotChecked=0, Total=7310 [2021-11-03 03:47:52,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4480 states. [2021-11-03 03:47:52,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4480 to 1645. [2021-11-03 03:47:52,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1284 states have (on average 1.7149532710280373) internal successors, (2202), 1644 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:52,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 2202 transitions. [2021-11-03 03:47:52,211 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 2202 transitions. Word has length 85 [2021-11-03 03:47:52,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:47:52,212 INFO L470 AbstractCegarLoop]: Abstraction has 1645 states and 2202 transitions. [2021-11-03 03:47:52,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.125) internal successors, (245), 40 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:52,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 2202 transitions. [2021-11-03 03:47:52,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 03:47:52,214 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:47:52,215 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:47:52,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-11-03 03:47:52,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-03 03:47:52,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-03 03:47:52,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:47:52,832 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-03 03:47:52,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:47:52,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1600982183, now seen corresponding path program 1 times [2021-11-03 03:47:52,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:47:52,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641433970] [2021-11-03 03:47:52,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:47:52,835 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:47:52,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:47:52,836 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:47:52,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-03 03:47:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:47:54,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-03 03:47:54,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:47:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:47:55,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:47:57,228 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:47:57,228 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:47:57,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641433970] [2021-11-03 03:47:57,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641433970] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:47:57,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [175744366] [2021-11-03 03:47:57,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:47:57,230 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:47:57,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:47:57,231 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:47:57,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-03 03:47:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:47:59,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-03 03:47:59,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:47:59,693 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:47:59,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:47:59,983 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:47:59,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [175744366] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:47:59,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453376882] [2021-11-03 03:47:59,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:47:59,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:47:59,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:47:59,985 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:47:59,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-03 03:48:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:01,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-03 03:48:01,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:48:02,055 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:02,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:48:02,359 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:02,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453376882] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:48:02,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 03:48:02,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18, 18, 18, 18] total 34 [2021-11-03 03:48:02,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627983755] [2021-11-03 03:48:02,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-03 03:48:02,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:48:02,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-03 03:48:02,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-03 03:48:02,363 INFO L87 Difference]: Start difference. First operand 1645 states and 2202 transitions. Second operand has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:22,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:22,038 INFO L93 Difference]: Finished difference Result 2297 states and 2961 transitions. [2021-11-03 03:48:22,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-03 03:48:22,041 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 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 93 [2021-11-03 03:48:22,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:22,045 INFO L225 Difference]: With dead ends: 2297 [2021-11-03 03:48:22,046 INFO L226 Difference]: Without dead ends: 2297 [2021-11-03 03:48:22,048 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=1446, Invalid=2586, Unknown=0, NotChecked=0, Total=4032 [2021-11-03 03:48:22,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2021-11-03 03:48:22,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1669. [2021-11-03 03:48:22,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1669 states, 1308 states have (on average 1.701834862385321) internal successors, (2226), 1668 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:22,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2226 transitions. [2021-11-03 03:48:22,081 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2226 transitions. Word has length 93 [2021-11-03 03:48:22,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:22,082 INFO L470 AbstractCegarLoop]: Abstraction has 1669 states and 2226 transitions. [2021-11-03 03:48:22,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:22,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2226 transitions. [2021-11-03 03:48:22,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-03 03:48:22,084 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:22,084 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:48:22,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-03 03:48:22,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-11-03 03:48:22,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-03 03:48:22,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:48:22,706 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-03 03:48:22,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:22,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1361330777, now seen corresponding path program 2 times [2021-11-03 03:48:22,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:48:22,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788819118] [2021-11-03 03:48:22,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:48:22,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:48:22,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:48:22,710 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:48:22,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-03 03:48:24,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:48:24,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:48:24,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-03 03:48:24,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:48:27,130 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:27,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:48:32,097 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:32,097 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:48:32,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788819118] [2021-11-03 03:48:32,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788819118] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:48:32,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [817118497] [2021-11-03 03:48:32,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:48:32,098 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:48:32,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:48:32,099 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:48:32,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-11-03 03:48:35,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:48:35,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:48:35,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-03 03:48:35,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:48:36,122 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:36,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:48:36,649 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:48:36,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [817118497] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:48:36,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61351003] [2021-11-03 03:48:36,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:48:36,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:48:36,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:48:36,654 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:48:36,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da866ca8-9edb-4f4d-8848-1095cb500ea4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-03 03:49:47,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:49:47,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:49:47,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 78 conjunts are in the unsatisfiable core [2021-11-03 03:49:47,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:49:47,937 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 03:49:47,937 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 16 treesize of output 16 [2021-11-03 03:49:47,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-03 03:49:48,161 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 [2021-11-03 03:49:48,167 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 23 treesize of output 19 [2021-11-03 03:49:48,747 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-11-03 03:49:48,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 67 [2021-11-03 03:49:48,782 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-03 03:49:48,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 51 [2021-11-03 03:49:49,176 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:49:49,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:49:50,414 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:49:50,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:49:52,058 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:49:52,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:49:52,094 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:49:52,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:49:53,446 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:49:53,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:49:54,273 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:49:54,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:49:55,882 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:49:55,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:49:57,939 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:49:57,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:49:58,278 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:49:58,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:49:58,305 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:49:58,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:49:59,919 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:49:59,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:50:04,078 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:50:04,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:50:05,534 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:50:05,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:50:05,564 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:50:05,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:50:07,299 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:50:07,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:50:07,327 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:50:07,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:50:09,391 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:50:09,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:50:11,520 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:50:11,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:50:11,987 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:50:11,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:50:13,900 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:50:13,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:50:16,236 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:50:16,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:50:16,267 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:50:16,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:50:18,715 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:50:18,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:50:21,754 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:50:21,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:50:22,077 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:50:22,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:50:22,105 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:50:22,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:50:22,427 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:50:22,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:50:22,999 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:50:23,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:50:24,418 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:50:24,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:50:24,443 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:50:24,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:50:25,684 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:50:25,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:50:25,711 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:50:25,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:50:26,026 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:50:26,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:50:26,052 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:50:26,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:50:26,405 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:50:26,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:50:26,443 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:50:26,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:50:26,804 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:50:26,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:50:28,329 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:50:28,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:50:28,660 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:50:28,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:50:28,684 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:50:28,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:50:29,014 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:50:29,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:50:29,039 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:50:29,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:50:29,350 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:50:29,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:50:32,373 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:50:32,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:50:32,692 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:50:32,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:50:32,734 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:50:32,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:50:33,031 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:50:33,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:50:33,090 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:50:33,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:50:33,457 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:50:33,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:50:35,104 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:50:35,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:50:36,985 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:50:36,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:50:37,014 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:50:37,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:50:39,698 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:50:39,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:50:40,699 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:50:40,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:50:44,263 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 03:50:44,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 03:50:46,667 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 03:50:46,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 03:50:49,945 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 03:50:49,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 78 [2021-11-03 03:50:52,548 INFO L354 Elim1Store]: treesize reduction 104, result has 19.4 percent of original size [2021-11-03 03:50:52,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 101 [2021-11-03 03:50:53,208 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-03 03:50:53,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 62 [2021-11-03 03:50:53,215 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-03 03:50:53,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 26 [2021-11-03 03:50:53,319 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2021-11-03 03:50:53,319 INFO L328 TraceCheckSpWp]: Computing backward predicates...