./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8 --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 0dff9798a0295b679f16f480562390718a9087ab219890b5f7fb9fb3739a540b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:06:40,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:06:40,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:06:40,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:06:40,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:06:40,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:06:40,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:06:40,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:06:40,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:06:40,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:06:40,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:06:40,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:06:40,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:06:40,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:06:40,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:06:40,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:06:40,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:06:40,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:06:40,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:06:40,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:06:40,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:06:40,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:06:40,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:06:40,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:06:40,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:06:40,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:06:40,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:06:40,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:06:40,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:06:40,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:06:40,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:06:40,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:06:40,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:06:40,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:06:40,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:06:40,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:06:40,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:06:40,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:06:40,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:06:40,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:06:40,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:06:40,544 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-07 01:06:40,573 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:06:40,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:06:40,574 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:06:40,575 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:06:40,579 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:06:40,579 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:06:40,579 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:06:40,580 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:06:40,580 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:06:40,580 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:06:40,581 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:06:40,581 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:06:40,582 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:06:40,582 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:06:40,582 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:06:40,583 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 01:06:40,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 01:06:40,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:06:40,584 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:06:40,584 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:06:40,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:06:40,584 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:06:40,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:06:40,585 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 01:06:40,585 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 01:06:40,585 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 01:06:40,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:06:40,587 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:06:40,587 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:06:40,587 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:06:40,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:06:40,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:06:40,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:06:40,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:06:40,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:06:40,589 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:06:40,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:06:40,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:06:40,589 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:06:40,590 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_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dff9798a0295b679f16f480562390718a9087ab219890b5f7fb9fb3739a540b [2021-11-07 01:06:40,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:06:40,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:06:40,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:06:40,890 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:06:40,891 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:06:40,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i [2021-11-07 01:06:40,966 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/data/640ff4c2d/ba5dba445c87410ba4eac34fef7afcf4/FLAGdfeae41fe [2021-11-07 01:06:41,602 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:06:41,602 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i [2021-11-07 01:06:41,619 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/data/640ff4c2d/ba5dba445c87410ba4eac34fef7afcf4/FLAGdfeae41fe [2021-11-07 01:06:41,800 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/data/640ff4c2d/ba5dba445c87410ba4eac34fef7afcf4 [2021-11-07 01:06:41,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:06:41,803 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:06:41,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:06:41,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:06:41,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:06:41,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:06:41" (1/1) ... [2021-11-07 01:06:41,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2667445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:41, skipping insertion in model container [2021-11-07 01:06:41,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:06:41" (1/1) ... [2021-11-07 01:06:41,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:06:41,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:06:42,359 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_dee09709-a66b-4dce-9444-5bcf5ba0e116/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[33021,33034] [2021-11-07 01:06:42,460 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_dee09709-a66b-4dce-9444-5bcf5ba0e116/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44124,44137] [2021-11-07 01:06:42,461 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_dee09709-a66b-4dce-9444-5bcf5ba0e116/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44245,44258] [2021-11-07 01:06:42,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:06:42,517 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) [2021-11-07 01:06:42,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@748d9ebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:42, skipping insertion in model container [2021-11-07 01:06:42,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:06:42,518 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:06:42,520 INFO L168 Benchmark]: Toolchain (without parser) took 715.32 ms. Allocated memory is still 117.4 MB. Free memory was 75.9 MB in the beginning and 81.0 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:06:42,520 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 117.4 MB. Free memory was 95.5 MB in the beginning and 95.4 MB in the end (delta: 121.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:06:42,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.11 ms. Allocated memory is still 117.4 MB. Free memory was 75.8 MB in the beginning and 81.0 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:06:42,523 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 117.4 MB. Free memory was 95.5 MB in the beginning and 95.4 MB in the end (delta: 121.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 713.11 ms. Allocated memory is still 117.4 MB. Free memory was 75.8 MB in the beginning and 81.0 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: 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_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8 --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 0dff9798a0295b679f16f480562390718a9087ab219890b5f7fb9fb3739a540b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:06:44,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:06:44,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:06:44,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:06:44,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:06:44,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:06:44,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:06:44,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:06:44,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:06:44,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:06:44,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:06:44,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:06:44,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:06:44,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:06:44,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:06:44,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:06:44,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:06:44,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:06:44,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:06:44,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:06:44,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:06:44,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:06:44,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:06:44,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:06:44,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:06:44,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:06:44,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:06:44,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:06:44,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:06:44,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:06:44,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:06:44,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:06:44,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:06:44,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:06:44,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:06:44,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:06:44,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:06:44,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:06:44,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:06:44,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:06:44,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:06:44,931 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-07 01:06:44,973 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:06:44,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:06:44,974 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:06:44,975 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:06:44,975 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:06:44,975 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:06:44,975 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:06:44,976 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:06:44,976 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:06:44,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 01:06:44,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 01:06:44,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:06:44,979 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:06:44,979 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:06:44,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:06:44,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:06:44,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:06:44,980 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 01:06:44,980 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 01:06:44,980 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 01:06:44,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:06:44,981 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:06:44,981 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:06:44,981 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:06:44,982 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:06:44,982 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:06:44,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:06:44,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:06:44,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:06:44,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:06:44,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:06:44,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:06:44,984 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:06:44,984 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:44,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:06:44,984 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:06:44,985 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_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dff9798a0295b679f16f480562390718a9087ab219890b5f7fb9fb3739a540b [2021-11-07 01:06:45,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:06:45,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:06:45,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:06:45,385 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:06:45,387 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:06:45,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i [2021-11-07 01:06:45,447 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/data/b1d62bfad/7d688fc2d1574a4abe3cab7427b47db2/FLAGd810aa0c3 [2021-11-07 01:06:46,118 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:06:46,119 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i [2021-11-07 01:06:46,138 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/data/b1d62bfad/7d688fc2d1574a4abe3cab7427b47db2/FLAGd810aa0c3 [2021-11-07 01:06:46,346 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/data/b1d62bfad/7d688fc2d1574a4abe3cab7427b47db2 [2021-11-07 01:06:46,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:06:46,350 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:06:46,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:06:46,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:06:46,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:06:46,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:06:46" (1/1) ... [2021-11-07 01:06:46,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@613ebd62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:46, skipping insertion in model container [2021-11-07 01:06:46,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:06:46" (1/1) ... [2021-11-07 01:06:46,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:06:46,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:06:46,825 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_dee09709-a66b-4dce-9444-5bcf5ba0e116/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[33021,33034] [2021-11-07 01:06:46,972 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_dee09709-a66b-4dce-9444-5bcf5ba0e116/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44124,44137] [2021-11-07 01:06:46,975 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_dee09709-a66b-4dce-9444-5bcf5ba0e116/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44245,44258] [2021-11-07 01:06:47,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:06:47,018 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:06:47,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:06:47,076 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[33021,33034] [2021-11-07 01:06:47,145 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_dee09709-a66b-4dce-9444-5bcf5ba0e116/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44124,44137] [2021-11-07 01:06:47,145 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_dee09709-a66b-4dce-9444-5bcf5ba0e116/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44245,44258] [2021-11-07 01:06:47,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:06:47,161 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:06:47,205 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_dee09709-a66b-4dce-9444-5bcf5ba0e116/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[33021,33034] [2021-11-07 01:06:47,276 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_dee09709-a66b-4dce-9444-5bcf5ba0e116/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44124,44137] [2021-11-07 01:06:47,277 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_dee09709-a66b-4dce-9444-5bcf5ba0e116/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44245,44258] [2021-11-07 01:06:47,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:06:47,342 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:06:47,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:47 WrapperNode [2021-11-07 01:06:47,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:06:47,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:06:47,345 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:06:47,346 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:06:47,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:47" (1/1) ... [2021-11-07 01:06:47,426 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:47" (1/1) ... [2021-11-07 01:06:47,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:06:47,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:06:47,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:06:47,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:06:47,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:47" (1/1) ... [2021-11-07 01:06:47,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:47" (1/1) ... [2021-11-07 01:06:47,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:47" (1/1) ... [2021-11-07 01:06:47,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:47" (1/1) ... [2021-11-07 01:06:47,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:47" (1/1) ... [2021-11-07 01:06:47,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:47" (1/1) ... [2021-11-07 01:06:47,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:47" (1/1) ... [2021-11-07 01:06:47,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:06:47,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:06:47,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:06:47,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:06:47,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:47" (1/1) ... [2021-11-07 01:06:47,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:06:47,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:06:47,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:06:47,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:06:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:06:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:06:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:06:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:06:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:06:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 01:06:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:06:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:06:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:06:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:06:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:06:47,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:06:53,096 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:06:53,096 INFO L299 CfgBuilder]: Removed 82 assume(true) statements. [2021-11-07 01:06:53,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:06:53 BoogieIcfgContainer [2021-11-07 01:06:53,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:06:53,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:06:53,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:06:53,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:06:53,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:06:46" (1/3) ... [2021-11-07 01:06:53,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320939f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:06:53, skipping insertion in model container [2021-11-07 01:06:53,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:47" (2/3) ... [2021-11-07 01:06:53,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320939f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:06:53, skipping insertion in model container [2021-11-07 01:06:53,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:06:53" (3/3) ... [2021-11-07 01:06:53,108 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test7-2.i [2021-11-07 01:06:53,113 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:06:53,113 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 635 error locations. [2021-11-07 01:06:53,154 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:06:53,160 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 [2021-11-07 01:06:53,160 INFO L340 AbstractCegarLoop]: Starting to check reachability of 635 error locations. [2021-11-07 01:06:53,202 INFO L276 IsEmpty]: Start isEmpty. Operand has 1253 states, 617 states have (on average 2.2641815235008105) internal successors, (1397), 1252 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:53,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 01:06:53,207 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:53,208 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 01:06:53,208 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:06:53,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:53,214 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-07 01:06:53,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:53,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611019017] [2021-11-07 01:06:53,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:53,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:53,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:53,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:53,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:06:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:53,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:06:53,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:53,517 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 [2021-11-07 01:06:53,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:53,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:53,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:53,545 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:53,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [611019017] [2021-11-07 01:06:53,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [611019017] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:53,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:53,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:06:53,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93785335] [2021-11-07 01:06:53,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:06:53,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:53,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:06:53,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:06:53,570 INFO L87 Difference]: Start difference. First operand has 1253 states, 617 states have (on average 2.2641815235008105) internal successors, (1397), 1252 states have internal predecessors, (1397), 0 states have call successors, (0), 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) [2021-11-07 01:06:56,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:56,107 INFO L93 Difference]: Finished difference Result 1421 states and 1496 transitions. [2021-11-07 01:06:56,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:06:56,110 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 [2021-11-07 01:06:56,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:56,133 INFO L225 Difference]: With dead ends: 1421 [2021-11-07 01:06:56,133 INFO L226 Difference]: Without dead ends: 1419 [2021-11-07 01:06:56,135 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 [2021-11-07 01:06:56,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2021-11-07 01:06:56,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1234. [2021-11-07 01:06:56,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 615 states have (on average 2.1154471544715445) internal successors, (1301), 1233 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:56,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1301 transitions. [2021-11-07 01:06:56,259 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1301 transitions. Word has length 3 [2021-11-07 01:06:56,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:56,260 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 1301 transitions. [2021-11-07 01:06:56,261 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) [2021-11-07 01:06:56,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1301 transitions. [2021-11-07 01:06:56,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 01:06:56,262 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:56,262 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 01:06:56,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:56,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:56,478 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:06:56,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:56,478 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-07 01:06:56,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:56,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597211818] [2021-11-07 01:06:56,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:56,480 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:56,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:56,483 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:56,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:06:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:56,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:06:56,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:56,648 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 [2021-11-07 01:06:56,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:56,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:56,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:56,714 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:56,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597211818] [2021-11-07 01:06:56,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597211818] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:56,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:56,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 01:06:56,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121224323] [2021-11-07 01:06:56,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:06:56,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:56,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:06:56,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:06:56,718 INFO L87 Difference]: Start difference. First operand 1234 states and 1301 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) [2021-11-07 01:07:02,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:02,156 INFO L93 Difference]: Finished difference Result 1898 states and 2008 transitions. [2021-11-07 01:07:02,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:07:02,158 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 [2021-11-07 01:07:02,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:02,167 INFO L225 Difference]: With dead ends: 1898 [2021-11-07 01:07:02,167 INFO L226 Difference]: Without dead ends: 1898 [2021-11-07 01:07:02,168 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 [2021-11-07 01:07:02,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2021-11-07 01:07:02,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1269. [2021-11-07 01:07:02,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 659 states have (on average 2.094081942336874) internal successors, (1380), 1268 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:02,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1380 transitions. [2021-11-07 01:07:02,201 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1380 transitions. Word has length 3 [2021-11-07 01:07:02,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:02,202 INFO L470 AbstractCegarLoop]: Abstraction has 1269 states and 1380 transitions. [2021-11-07 01:07:02,202 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) [2021-11-07 01:07:02,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1380 transitions. [2021-11-07 01:07:02,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:07:02,203 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:02,203 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:07:02,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:02,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:02,407 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:07:02,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:02,408 INFO L85 PathProgramCache]: Analyzing trace with hash 62249618, now seen corresponding path program 1 times [2021-11-07 01:07:02,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:02,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865910293] [2021-11-07 01:07:02,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:02,409 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:02,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:02,410 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:02,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:07:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:02,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:07:02,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:02,566 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 [2021-11-07 01:07:02,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:02,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:02,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:02,616 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:02,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865910293] [2021-11-07 01:07:02,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865910293] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:02,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:02,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:07:02,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375529607] [2021-11-07 01:07:02,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:07:02,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:02,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:07:02,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:07:02,628 INFO L87 Difference]: Start difference. First operand 1269 states and 1380 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:04,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:04,729 INFO L93 Difference]: Finished difference Result 1599 states and 1735 transitions. [2021-11-07 01:07:04,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:07:04,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 01:07:04,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:04,737 INFO L225 Difference]: With dead ends: 1599 [2021-11-07 01:07:04,737 INFO L226 Difference]: Without dead ends: 1599 [2021-11-07 01:07:04,738 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:07:04,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2021-11-07 01:07:04,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1222. [2021-11-07 01:07:04,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 659 states have (on average 2.0182094081942337) internal successors, (1330), 1221 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:04,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1330 transitions. [2021-11-07 01:07:04,767 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1330 transitions. Word has length 8 [2021-11-07 01:07:04,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:04,767 INFO L470 AbstractCegarLoop]: Abstraction has 1222 states and 1330 transitions. [2021-11-07 01:07:04,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:04,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1330 transitions. [2021-11-07 01:07:04,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:07:04,768 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:04,769 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:07:04,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:04,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:04,980 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:07:04,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:04,980 INFO L85 PathProgramCache]: Analyzing trace with hash 62249619, now seen corresponding path program 1 times [2021-11-07 01:07:04,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:04,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673258548] [2021-11-07 01:07:04,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:04,981 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:04,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:04,982 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:04,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:07:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:05,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:07:05,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:05,152 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 [2021-11-07 01:07:05,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:05,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:05,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:05,276 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:05,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673258548] [2021-11-07 01:07:05,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673258548] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:05,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:05,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 01:07:05,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765028204] [2021-11-07 01:07:05,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:07:05,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:05,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:07:05,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:07:05,278 INFO L87 Difference]: Start difference. First operand 1222 states and 1330 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:09,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:09,573 INFO L93 Difference]: Finished difference Result 1643 states and 1743 transitions. [2021-11-07 01:07:09,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:07:09,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 01:07:09,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:09,581 INFO L225 Difference]: With dead ends: 1643 [2021-11-07 01:07:09,581 INFO L226 Difference]: Without dead ends: 1643 [2021-11-07 01:07:09,582 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:07:09,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2021-11-07 01:07:09,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1212. [2021-11-07 01:07:09,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 659 states have (on average 1.9984825493171472) internal successors, (1317), 1211 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:09,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1317 transitions. [2021-11-07 01:07:09,612 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1317 transitions. Word has length 8 [2021-11-07 01:07:09,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:09,612 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 1317 transitions. [2021-11-07 01:07:09,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:09,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1317 transitions. [2021-11-07 01:07:09,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 01:07:09,613 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:09,613 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:07:09,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:09,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:09,825 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr526ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:07:09,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:09,826 INFO L85 PathProgramCache]: Analyzing trace with hash -945573268, now seen corresponding path program 1 times [2021-11-07 01:07:09,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:09,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317456940] [2021-11-07 01:07:09,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:09,827 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:09,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:09,829 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:09,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:07:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:09,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:07:09,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:10,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:10,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:10,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:10,179 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:10,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1317456940] [2021-11-07 01:07:10,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1317456940] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:10,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:10,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:07:10,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238892632] [2021-11-07 01:07:10,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:07:10,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:10,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:07:10,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:07:10,182 INFO L87 Difference]: Start difference. First operand 1212 states and 1317 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) [2021-11-07 01:07:11,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:11,198 INFO L93 Difference]: Finished difference Result 1855 states and 2002 transitions. [2021-11-07 01:07:11,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:07:11,199 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 [2021-11-07 01:07:11,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:11,210 INFO L225 Difference]: With dead ends: 1855 [2021-11-07 01:07:11,210 INFO L226 Difference]: Without dead ends: 1855 [2021-11-07 01:07:11,211 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 [2021-11-07 01:07:11,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2021-11-07 01:07:11,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 1453. [2021-11-07 01:07:11,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 900 states have (on average 1.968888888888889) internal successors, (1772), 1452 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:11,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1772 transitions. [2021-11-07 01:07:11,247 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1772 transitions. Word has length 11 [2021-11-07 01:07:11,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:11,247 INFO L470 AbstractCegarLoop]: Abstraction has 1453 states and 1772 transitions. [2021-11-07 01:07:11,247 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) [2021-11-07 01:07:11,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1772 transitions. [2021-11-07 01:07:11,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 01:07:11,248 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:11,248 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:07:11,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:11,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:11,459 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:07:11,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:11,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1258779124, now seen corresponding path program 1 times [2021-11-07 01:07:11,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:11,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620033540] [2021-11-07 01:07:11,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:11,461 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:11,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:11,462 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:11,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:07:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:11,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:07:11,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:11,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:11,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:11,704 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:11,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620033540] [2021-11-07 01:07:11,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620033540] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:11,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:11,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:07:11,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546336632] [2021-11-07 01:07:11,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:07:11,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:11,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:07:11,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:07:11,706 INFO L87 Difference]: Start difference. First operand 1453 states and 1772 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) [2021-11-07 01:07:11,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:11,740 INFO L93 Difference]: Finished difference Result 1615 states and 1920 transitions. [2021-11-07 01:07:11,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:07:11,741 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 [2021-11-07 01:07:11,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:11,749 INFO L225 Difference]: With dead ends: 1615 [2021-11-07 01:07:11,749 INFO L226 Difference]: Without dead ends: 1615 [2021-11-07 01:07:11,749 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 [2021-11-07 01:07:11,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2021-11-07 01:07:11,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1393. [2021-11-07 01:07:11,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 864 states have (on average 1.9513888888888888) internal successors, (1686), 1392 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:11,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1686 transitions. [2021-11-07 01:07:11,779 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1686 transitions. Word has length 13 [2021-11-07 01:07:11,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:11,779 INFO L470 AbstractCegarLoop]: Abstraction has 1393 states and 1686 transitions. [2021-11-07 01:07:11,779 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) [2021-11-07 01:07:11,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1686 transitions. [2021-11-07 01:07:11,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 01:07:11,781 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:11,781 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:07:11,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:11,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:11,992 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:07:11,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:11,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1494013586, now seen corresponding path program 1 times [2021-11-07 01:07:11,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:11,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440941600] [2021-11-07 01:07:11,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:11,994 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:11,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:11,994 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:11,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:07:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:12,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:07:12,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:12,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:12,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:12,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:12,261 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:12,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440941600] [2021-11-07 01:07:12,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440941600] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:12,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:12,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:07:12,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801089714] [2021-11-07 01:07:12,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:07:12,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:12,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:07:12,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:07:12,263 INFO L87 Difference]: Start difference. First operand 1393 states and 1686 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:12,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:12,356 INFO L93 Difference]: Finished difference Result 1587 states and 1864 transitions. [2021-11-07 01:07:12,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:07:12,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 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 15 [2021-11-07 01:07:12,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:12,365 INFO L225 Difference]: With dead ends: 1587 [2021-11-07 01:07:12,366 INFO L226 Difference]: Without dead ends: 1587 [2021-11-07 01:07:12,366 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:07:12,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2021-11-07 01:07:12,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1363. [2021-11-07 01:07:12,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 848 states have (on average 1.919811320754717) internal successors, (1628), 1362 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:12,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1628 transitions. [2021-11-07 01:07:12,397 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1628 transitions. Word has length 15 [2021-11-07 01:07:12,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:12,398 INFO L470 AbstractCegarLoop]: Abstraction has 1363 states and 1628 transitions. [2021-11-07 01:07:12,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:12,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1628 transitions. [2021-11-07 01:07:12,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 01:07:12,399 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:12,399 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:07:12,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:12,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:12,611 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr634ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:07:12,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:12,611 INFO L85 PathProgramCache]: Analyzing trace with hash 50590223, now seen corresponding path program 1 times [2021-11-07 01:07:12,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:12,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803903334] [2021-11-07 01:07:12,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:12,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:12,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:12,615 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:12,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:07:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:12,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:07:12,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:12,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:07:12,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:07:12,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:07:12,918 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 01:07:12,919 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 [2021-11-07 01:07:12,976 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:07:12,977 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 [2021-11-07 01:07:13,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:13,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:13,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:13,111 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:13,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803903334] [2021-11-07 01:07:13,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803903334] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:13,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:13,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:07:13,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551314124] [2021-11-07 01:07:13,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:07:13,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:13,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:07:13,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:07:13,112 INFO L87 Difference]: Start difference. First operand 1363 states and 1628 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:14,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:14,657 INFO L93 Difference]: Finished difference Result 1799 states and 2123 transitions. [2021-11-07 01:07:14,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:07:14,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 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 16 [2021-11-07 01:07:14,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:14,665 INFO L225 Difference]: With dead ends: 1799 [2021-11-07 01:07:14,665 INFO L226 Difference]: Without dead ends: 1799 [2021-11-07 01:07:14,666 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:07:14,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2021-11-07 01:07:14,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1362. [2021-11-07 01:07:14,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 847 states have (on average 1.9197166469893743) internal successors, (1626), 1361 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:14,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1626 transitions. [2021-11-07 01:07:14,711 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1626 transitions. Word has length 16 [2021-11-07 01:07:14,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:14,712 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 1626 transitions. [2021-11-07 01:07:14,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:14,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1626 transitions. [2021-11-07 01:07:14,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 01:07:14,713 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:14,713 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:07:14,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:14,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:14,926 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:07:14,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:14,927 INFO L85 PathProgramCache]: Analyzing trace with hash -520774338, now seen corresponding path program 1 times [2021-11-07 01:07:14,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:14,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634659306] [2021-11-07 01:07:14,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:14,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:14,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:14,928 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:14,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:07:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:15,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:07:15,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:15,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:15,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:15,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:15,215 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:15,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634659306] [2021-11-07 01:07:15,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634659306] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:15,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:15,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:07:15,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95299523] [2021-11-07 01:07:15,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:07:15,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:15,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:07:15,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:07:15,216 INFO L87 Difference]: Start difference. First operand 1362 states and 1626 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:15,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:15,237 INFO L93 Difference]: Finished difference Result 1302 states and 1540 transitions. [2021-11-07 01:07:15,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:07:15,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 18 [2021-11-07 01:07:15,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:15,242 INFO L225 Difference]: With dead ends: 1302 [2021-11-07 01:07:15,242 INFO L226 Difference]: Without dead ends: 1302 [2021-11-07 01:07:15,243 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:07:15,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2021-11-07 01:07:15,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1302. [2021-11-07 01:07:15,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 811 states have (on average 1.8988902589395809) internal successors, (1540), 1301 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:15,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 1540 transitions. [2021-11-07 01:07:15,265 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 1540 transitions. Word has length 18 [2021-11-07 01:07:15,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:15,265 INFO L470 AbstractCegarLoop]: Abstraction has 1302 states and 1540 transitions. [2021-11-07 01:07:15,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:15,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 1540 transitions. [2021-11-07 01:07:15,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 01:07:15,266 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:15,267 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] [2021-11-07 01:07:15,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:15,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:15,478 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:07:15,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:15,478 INFO L85 PathProgramCache]: Analyzing trace with hash 2047030904, now seen corresponding path program 1 times [2021-11-07 01:07:15,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:15,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951576514] [2021-11-07 01:07:15,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:15,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:15,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:15,480 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:15,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:07:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:15,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:07:15,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:15,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:15,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:15,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:15,832 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:15,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951576514] [2021-11-07 01:07:15,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951576514] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:15,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:15,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:07:15,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486387783] [2021-11-07 01:07:15,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:07:15,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:15,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:07:15,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:07:15,836 INFO L87 Difference]: Start difference. First operand 1302 states and 1540 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:15,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:15,901 INFO L93 Difference]: Finished difference Result 1274 states and 1484 transitions. [2021-11-07 01:07:15,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:07:15,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-07 01:07:15,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:15,907 INFO L225 Difference]: With dead ends: 1274 [2021-11-07 01:07:15,908 INFO L226 Difference]: Without dead ends: 1274 [2021-11-07 01:07:15,908 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:07:15,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-11-07 01:07:15,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1272. [2021-11-07 01:07:15,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 795 states have (on average 1.8641509433962264) internal successors, (1482), 1271 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:15,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1482 transitions. [2021-11-07 01:07:15,930 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1482 transitions. Word has length 20 [2021-11-07 01:07:15,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:15,930 INFO L470 AbstractCegarLoop]: Abstraction has 1272 states and 1482 transitions. [2021-11-07 01:07:15,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:15,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1482 transitions. [2021-11-07 01:07:15,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:07:15,932 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:15,932 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] [2021-11-07 01:07:15,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:16,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:16,143 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:07:16,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:16,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1406589690, now seen corresponding path program 1 times [2021-11-07 01:07:16,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:16,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551683389] [2021-11-07 01:07:16,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:16,145 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:16,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:16,146 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:16,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:07:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:16,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:07:16,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:16,360 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 [2021-11-07 01:07:16,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:16,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:16,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:16,608 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:16,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551683389] [2021-11-07 01:07:16,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [551683389] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:16,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:16,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:07:16,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215271455] [2021-11-07 01:07:16,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:07:16,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:16,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:07:16,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:07:16,610 INFO L87 Difference]: Start difference. First operand 1272 states and 1482 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:19,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:19,064 INFO L93 Difference]: Finished difference Result 1854 states and 2186 transitions. [2021-11-07 01:07:19,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:07:19,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-11-07 01:07:19,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:19,072 INFO L225 Difference]: With dead ends: 1854 [2021-11-07 01:07:19,073 INFO L226 Difference]: Without dead ends: 1854 [2021-11-07 01:07:19,073 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:07:19,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2021-11-07 01:07:19,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1268. [2021-11-07 01:07:19,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 795 states have (on average 1.8540880503144654) internal successors, (1474), 1267 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:19,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1474 transitions. [2021-11-07 01:07:19,097 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1474 transitions. Word has length 34 [2021-11-07 01:07:19,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:19,099 INFO L470 AbstractCegarLoop]: Abstraction has 1268 states and 1474 transitions. [2021-11-07 01:07:19,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:19,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1474 transitions. [2021-11-07 01:07:19,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:07:19,104 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:19,105 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] [2021-11-07 01:07:19,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:19,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:19,317 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:07:19,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:19,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1406589689, now seen corresponding path program 1 times [2021-11-07 01:07:19,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:19,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020618503] [2021-11-07 01:07:19,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:19,319 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:19,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:19,320 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:19,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:07:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:19,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:07:19,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:19,592 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 [2021-11-07 01:07:19,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:19,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:20,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:20,353 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:20,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020618503] [2021-11-07 01:07:20,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020618503] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:20,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:20,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:07:20,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965005258] [2021-11-07 01:07:20,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:07:20,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:20,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:07:20,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:07:20,355 INFO L87 Difference]: Start difference. First operand 1268 states and 1474 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:26,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:26,634 INFO L93 Difference]: Finished difference Result 1981 states and 2290 transitions. [2021-11-07 01:07:26,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:07:26,635 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 34 [2021-11-07 01:07:26,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:26,643 INFO L225 Difference]: With dead ends: 1981 [2021-11-07 01:07:26,643 INFO L226 Difference]: Without dead ends: 1981 [2021-11-07 01:07:26,643 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:07:26,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2021-11-07 01:07:26,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1264. [2021-11-07 01:07:26,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 795 states have (on average 1.8440251572327044) internal successors, (1466), 1263 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:26,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1466 transitions. [2021-11-07 01:07:26,665 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1466 transitions. Word has length 34 [2021-11-07 01:07:26,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:26,666 INFO L470 AbstractCegarLoop]: Abstraction has 1264 states and 1466 transitions. [2021-11-07 01:07:26,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:26,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1466 transitions. [2021-11-07 01:07:26,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 01:07:26,667 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:26,668 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] [2021-11-07 01:07:26,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:26,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:26,880 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:07:26,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:26,880 INFO L85 PathProgramCache]: Analyzing trace with hash -489765179, now seen corresponding path program 1 times [2021-11-07 01:07:26,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:26,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573707699] [2021-11-07 01:07:26,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:26,881 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:26,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:26,882 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:26,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:07:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:27,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:07:27,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:27,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:27,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:27,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:27,504 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:27,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573707699] [2021-11-07 01:07:27,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573707699] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:27,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:27,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:07:27,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603565834] [2021-11-07 01:07:27,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:07:27,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:27,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:07:27,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:07:27,505 INFO L87 Difference]: Start difference. First operand 1264 states and 1466 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:27,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:27,569 INFO L93 Difference]: Finished difference Result 1252 states and 1446 transitions. [2021-11-07 01:07:27,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:07:27,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-07 01:07:27,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:27,578 INFO L225 Difference]: With dead ends: 1252 [2021-11-07 01:07:27,578 INFO L226 Difference]: Without dead ends: 1252 [2021-11-07 01:07:27,579 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:07:27,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-11-07 01:07:27,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1252. [2021-11-07 01:07:27,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 783 states have (on average 1.8467432950191571) internal successors, (1446), 1251 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:27,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1446 transitions. [2021-11-07 01:07:27,598 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1446 transitions. Word has length 52 [2021-11-07 01:07:27,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:27,599 INFO L470 AbstractCegarLoop]: Abstraction has 1252 states and 1446 transitions. [2021-11-07 01:07:27,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:27,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1446 transitions. [2021-11-07 01:07:27,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:07:27,600 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:27,600 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:07:27,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:27,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:27,813 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:07:27,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:27,813 INFO L85 PathProgramCache]: Analyzing trace with hash -531678063, now seen corresponding path program 1 times [2021-11-07 01:07:27,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:27,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805179191] [2021-11-07 01:07:27,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:27,815 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:27,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:27,817 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:27,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:07:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:28,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:07:28,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:28,383 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 [2021-11-07 01:07:28,393 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 [2021-11-07 01:07:29,186 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 01:07:29,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-07 01:07:29,193 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 01:07:29,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2021-11-07 01:07:29,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:29,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:31,355 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc36.base_9| (_ BitVec 32))) (or (let ((.cse0 (bvadd c_ULTIMATE.start_main_~user~0.offset (_ bv12 32)))) (and (bvule (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset) .cse0) (bvule .cse0 (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc36.base_9| (_ bv44 32)) c_ULTIMATE.start_main_~user~0.base)))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc36.base_9|))))))) is different from false [2021-11-07 01:07:34,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:34,316 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:34,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805179191] [2021-11-07 01:07:34,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805179191] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:34,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:34,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:07:34,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878456005] [2021-11-07 01:07:34,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:07:34,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:34,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:07:34,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=12, Unknown=1, NotChecked=6, Total=30 [2021-11-07 01:07:34,318 INFO L87 Difference]: Start difference. First operand 1252 states and 1446 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:40,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:40,022 INFO L93 Difference]: Finished difference Result 1601 states and 1911 transitions. [2021-11-07 01:07:40,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:07:40,023 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 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 60 [2021-11-07 01:07:40,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:40,029 INFO L225 Difference]: With dead ends: 1601 [2021-11-07 01:07:40,030 INFO L226 Difference]: Without dead ends: 1601 [2021-11-07 01:07:40,030 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=16, Invalid=17, Unknown=1, NotChecked=8, Total=42 [2021-11-07 01:07:40,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2021-11-07 01:07:40,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1214. [2021-11-07 01:07:40,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 783 states have (on average 1.7982120051085568) internal successors, (1408), 1213 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:40,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1408 transitions. [2021-11-07 01:07:40,051 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1408 transitions. Word has length 60 [2021-11-07 01:07:40,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:40,052 INFO L470 AbstractCegarLoop]: Abstraction has 1214 states and 1408 transitions. [2021-11-07 01:07:40,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:40,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1408 transitions. [2021-11-07 01:07:40,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 01:07:40,053 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:40,053 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] [2021-11-07 01:07:40,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:40,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:40,259 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:07:40,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:40,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1426362414, now seen corresponding path program 1 times [2021-11-07 01:07:40,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:40,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720845221] [2021-11-07 01:07:40,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:40,260 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:40,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:40,263 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:40,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:07:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:40,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:07:40,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:40,788 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 [2021-11-07 01:07:40,803 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 [2021-11-07 01:07:40,846 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 [2021-11-07 01:07:40,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:40,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:41,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:41,025 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:41,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720845221] [2021-11-07 01:07:41,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720845221] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:41,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:41,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:07:41,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163800173] [2021-11-07 01:07:41,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:07:41,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:41,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:07:41,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:07:41,027 INFO L87 Difference]: Start difference. First operand 1214 states and 1408 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 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) [2021-11-07 01:07:46,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:46,247 INFO L93 Difference]: Finished difference Result 1993 states and 2318 transitions. [2021-11-07 01:07:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:07:46,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 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 [2021-11-07 01:07:46,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:46,256 INFO L225 Difference]: With dead ends: 1993 [2021-11-07 01:07:46,256 INFO L226 Difference]: Without dead ends: 1993 [2021-11-07 01:07:46,256 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:07:46,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2021-11-07 01:07:46,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1213. [2021-11-07 01:07:46,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 783 states have (on average 1.7969348659003832) internal successors, (1407), 1212 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:46,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1407 transitions. [2021-11-07 01:07:46,273 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1407 transitions. Word has length 66 [2021-11-07 01:07:46,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:46,274 INFO L470 AbstractCegarLoop]: Abstraction has 1213 states and 1407 transitions. [2021-11-07 01:07:46,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 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) [2021-11-07 01:07:46,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1407 transitions. [2021-11-07 01:07:46,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 01:07:46,275 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:46,275 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] [2021-11-07 01:07:46,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:46,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:46,479 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr77ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:07:46,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:46,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1267561538, now seen corresponding path program 1 times [2021-11-07 01:07:46,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:46,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622194020] [2021-11-07 01:07:46,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:46,480 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:46,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:46,482 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:46,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:07:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:46,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:07:46,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:47,088 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 [2021-11-07 01:07:47,128 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 [2021-11-07 01:07:47,142 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 [2021-11-07 01:07:47,212 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 [2021-11-07 01:07:47,215 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 [2021-11-07 01:07:47,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:47,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:47,795 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:47,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622194020] [2021-11-07 01:07:47,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622194020] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:47,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:47,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 01:07:47,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703468631] [2021-11-07 01:07:47,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:07:47,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:47,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:07:47,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:07:47,797 INFO L87 Difference]: Start difference. First operand 1213 states and 1407 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:06,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:08:06,052 INFO L93 Difference]: Finished difference Result 1917 states and 2219 transitions. [2021-11-07 01:08:06,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:08:06,053 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 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 [2021-11-07 01:08:06,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:08:06,061 INFO L225 Difference]: With dead ends: 1917 [2021-11-07 01:08:06,061 INFO L226 Difference]: Without dead ends: 1917 [2021-11-07 01:08:06,061 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:08:06,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2021-11-07 01:08:06,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1212. [2021-11-07 01:08:06,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 783 states have (on average 1.7956577266922094) internal successors, (1406), 1211 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:06,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1406 transitions. [2021-11-07 01:08:06,083 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1406 transitions. Word has length 67 [2021-11-07 01:08:06,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:06,083 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 1406 transitions. [2021-11-07 01:08:06,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:06,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1406 transitions. [2021-11-07 01:08:06,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:08:06,084 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:06,085 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] [2021-11-07 01:08:06,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:06,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:08:06,298 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:08:06,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:06,298 INFO L85 PathProgramCache]: Analyzing trace with hash -582276570, now seen corresponding path program 1 times [2021-11-07 01:08:06,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:06,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515964358] [2021-11-07 01:08:06,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:06,299 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:06,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:06,301 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:06,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:08:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:06,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:08:06,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:06,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:08:06,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:07,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:08:07,116 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:07,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515964358] [2021-11-07 01:08:07,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515964358] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:08:07,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:08:07,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:08:07,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379643417] [2021-11-07 01:08:07,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:08:07,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:07,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:08:07,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:08:07,118 INFO L87 Difference]: Start difference. First operand 1212 states and 1406 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:07,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:08:07,218 INFO L93 Difference]: Finished difference Result 2274 states and 2622 transitions. [2021-11-07 01:08:07,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:08:07,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 01:08:07,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:08:07,227 INFO L225 Difference]: With dead ends: 2274 [2021-11-07 01:08:07,227 INFO L226 Difference]: Without dead ends: 2274 [2021-11-07 01:08:07,228 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:08:07,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2021-11-07 01:08:07,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 1215. [2021-11-07 01:08:07,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 786 states have (on average 1.7926208651399491) internal successors, (1409), 1214 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) [2021-11-07 01:08:07,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1409 transitions. [2021-11-07 01:08:07,255 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1409 transitions. Word has length 71 [2021-11-07 01:08:07,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:07,256 INFO L470 AbstractCegarLoop]: Abstraction has 1215 states and 1409 transitions. [2021-11-07 01:08:07,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:07,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1409 transitions. [2021-11-07 01:08:07,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 01:08:07,257 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:07,257 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] [2021-11-07 01:08:07,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:07,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:08:07,466 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:08:07,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:07,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1283072730, now seen corresponding path program 1 times [2021-11-07 01:08:07,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:07,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60466667] [2021-11-07 01:08:07,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:07,467 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:07,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:07,468 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:07,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 01:08:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:07,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:08:07,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:08,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:08:08,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:08,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:08:08,398 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:08,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [60466667] [2021-11-07 01:08:08,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [60466667] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:08:08,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [353911715] [2021-11-07 01:08:08,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:08,399 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:08:08,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:08:08,400 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:08:08,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-07 01:08:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:09,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:08:09,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:09,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:08:09,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:09,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:08:09,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [353911715] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:08:09,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917130645] [2021-11-07 01:08:09,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:09,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:08:09,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:08:09,425 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:08:09,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-07 01:08:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:10,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:08:10,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:10,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:08:10,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:10,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:08:10,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917130645] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:08:10,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:08:10,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 13 [2021-11-07 01:08:10,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56478398] [2021-11-07 01:08:10,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:08:10,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:10,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:08:10,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:08:10,435 INFO L87 Difference]: Start difference. First operand 1215 states and 1409 transitions. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:11,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:08:11,352 INFO L93 Difference]: Finished difference Result 3349 states and 3851 transitions. [2021-11-07 01:08:11,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 01:08:11,352 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 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 [2021-11-07 01:08:11,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:08:11,360 INFO L225 Difference]: With dead ends: 3349 [2021-11-07 01:08:11,360 INFO L226 Difference]: Without dead ends: 3349 [2021-11-07 01:08:11,361 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=364, Unknown=0, NotChecked=0, Total=552 [2021-11-07 01:08:11,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3349 states. [2021-11-07 01:08:11,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3349 to 1224. [2021-11-07 01:08:11,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 795 states have (on average 1.7861635220125787) internal successors, (1420), 1223 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:11,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1420 transitions. [2021-11-07 01:08:11,393 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1420 transitions. Word has length 73 [2021-11-07 01:08:11,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:11,393 INFO L470 AbstractCegarLoop]: Abstraction has 1224 states and 1420 transitions. [2021-11-07 01:08:11,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:11,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1420 transitions. [2021-11-07 01:08:11,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 01:08:11,394 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:11,395 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] [2021-11-07 01:08:11,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:11,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:11,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-07 01:08:11,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:08:12,000 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:08:12,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:12,000 INFO L85 PathProgramCache]: Analyzing trace with hash -376896730, now seen corresponding path program 2 times [2021-11-07 01:08:12,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:12,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621149590] [2021-11-07 01:08:12,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:08:12,001 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:12,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:12,002 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:12,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 01:08:12,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:08:12,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:08:12,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:08:12,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:13,203 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:08:13,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:13,653 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:08:13,653 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:13,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621149590] [2021-11-07 01:08:13,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621149590] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:08:13,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [737735204] [2021-11-07 01:08:13,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:08:13,654 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:08:13,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:08:13,655 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:08:13,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-07 01:08:14,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:08:14,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:08:14,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:08:14,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:15,196 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:08:15,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:15,366 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:08:15,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [737735204] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:08:15,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395026532] [2021-11-07 01:08:15,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:08:15,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:08:15,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:08:15,371 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:08:15,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-07 01:08:45,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:08:45,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:08:45,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-07 01:08:45,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:45,356 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 [2021-11-07 01:08:45,374 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:08:45,374 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 19 treesize of output 19 [2021-11-07 01:08:45,460 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 [2021-11-07 01:08:45,471 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 [2021-11-07 01:08:45,902 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-11-07 01:08:45,902 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 [2021-11-07 01:08:45,929 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-07 01:08:45,929 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 [2021-11-07 01:08:46,161 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:08:46,161 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 88 treesize of output 90 [2021-11-07 01:08:46,212 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:08:46,213 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 84 treesize of output 74 [2021-11-07 01:08:46,421 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:08:46,421 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 88 treesize of output 90 [2021-11-07 01:08:46,480 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:08:46,480 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 84 treesize of output 74 [2021-11-07 01:08:46,741 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:08:46,742 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 88 treesize of output 90 [2021-11-07 01:08:46,793 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:08:46,793 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 84 treesize of output 74 [2021-11-07 01:08:47,395 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-07 01:08:47,396 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 88 treesize of output 90 [2021-11-07 01:08:47,446 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:08:47,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-07 01:08:48,703 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:08:48,703 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 [2021-11-07 01:08:48,753 INFO L354 Elim1Store]: treesize reduction 104, result has 19.4 percent of original size [2021-11-07 01:08:48,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 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 [2021-11-07 01:08:49,187 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-07 01:08:49,187 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 [2021-11-07 01:08:49,210 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-07 01:08:49,210 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 [2021-11-07 01:08:49,276 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:08:49,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:09:09,311 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ BitVec 32)) (v_subst_4 (_ BitVec 32))) (let ((.cse0 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse2 (bvadd v_subst_4 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse3 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1))) c_ULTIMATE.start_main_~user~0.base) .cse3)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) .cse3))))) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ BitVec 32)) (v_subst_3 (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse5) (bvadd v_subst_3 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse5))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset)))) (bvule (bvadd .cse4 (_ bv16 32)) (bvadd .cse4 (_ bv20 32)))))) is different from false [2021-11-07 01:09:51,511 WARN L207 SmtUtils]: Spent 6.29 s on a formula simplification that was a NOOP. DAG size: 46 [2021-11-07 01:10:50,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2021-11-07 01:10:51,219 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 5 refuted. 5 times theorem prover too weak. 3 trivial. 6 not checked. [2021-11-07 01:10:51,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395026532] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:10:51,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:10:51,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 9, 11] total 35 [2021-11-07 01:10:51,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782440273] [2021-11-07 01:10:51,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-07 01:10:51,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:51,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-07 01:10:51,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=948, Unknown=16, NotChecked=64, Total=1190 [2021-11-07 01:10:51,222 INFO L87 Difference]: Start difference. First operand 1224 states and 1420 transitions. Second operand has 35 states, 35 states have (on average 4.942857142857143) internal successors, (173), 35 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:11:14,438 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ BitVec 32)) (v_subst_10 (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#value| (_ BitVec 32))) (let ((.cse0 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| |ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse2 (bvadd v_subst_10 |ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse3 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1))) c_ULTIMATE.start_main_~user~0.base) .cse3) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) .cse3))))) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#value| (_ BitVec 32)) (v_subst_9 (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) |ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| |ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse5) (bvadd v_subst_9 |ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse5))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset)))) (bvule (bvadd (_ bv16 32) .cse4) (bvadd .cse4 (_ bv20 32))))) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ BitVec 32))) (let ((.cse6 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse7 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse6 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) c_ULTIMATE.start_main_~user~0.base) .cse7) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse6 (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) .cse7))))) (= |c_ULTIMATE.start_#Ultimate.C_memset_#amount| (_ bv44 32)) (= |c_ULTIMATE.start_main_#t~mem40.offset| (_ bv0 32)) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~user~0.base))) (_ bv1 1))) (= (select |c_#length| |c_ULTIMATE.start_main_#t~mem40.base|) (_ bv44 32)) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ BitVec 32))) (let ((.cse8 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset)))) (bvule (bvadd .cse8 (_ bv16 32)) (bvadd .cse8 (_ bv20 32)))))) is different from false [2021-11-07 01:14:21,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:21,758 INFO L93 Difference]: Finished difference Result 2861 states and 3434 transitions. [2021-11-07 01:14:21,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-07 01:14:21,759 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.942857142857143) internal successors, (173), 35 states have internal predecessors, (173), 0 states have call successors, (0), 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 77 [2021-11-07 01:14:21,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:21,762 INFO L225 Difference]: With dead ends: 2861 [2021-11-07 01:14:21,763 INFO L226 Difference]: Without dead ends: 2861 [2021-11-07 01:14:21,764 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 418 SyntacticMatches, 7 SemanticMatches, 68 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 117.1s TimeCoverageRelationStatistics Valid=962, Invalid=3585, Unknown=17, NotChecked=266, Total=4830 [2021-11-07 01:14:21,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2021-11-07 01:14:21,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 1235. [2021-11-07 01:14:21,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 807 states have (on average 1.7732342007434945) internal successors, (1431), 1234 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:21,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1431 transitions. [2021-11-07 01:14:21,789 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1431 transitions. Word has length 77 [2021-11-07 01:14:21,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:21,789 INFO L470 AbstractCegarLoop]: Abstraction has 1235 states and 1431 transitions. [2021-11-07 01:14:21,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.942857142857143) internal successors, (173), 35 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:21,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1431 transitions. [2021-11-07 01:14:21,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 01:14:21,790 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:21,791 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] [2021-11-07 01:14:21,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:22,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:22,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-11-07 01:14:22,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:14:22,406 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:14:22,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:22,407 INFO L85 PathProgramCache]: Analyzing trace with hash 688279333, now seen corresponding path program 1 times [2021-11-07 01:14:22,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:22,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026659617] [2021-11-07 01:14:22,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:22,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:22,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:22,408 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:22,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-07 01:14:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:23,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:14:23,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:24,117 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:24,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:25,555 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:25,556 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:25,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026659617] [2021-11-07 01:14:25,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026659617] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:25,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [238066035] [2021-11-07 01:14:25,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:25,557 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:25,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:14:25,557 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:14:25,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-07 01:14:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:26,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:14:26,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:27,002 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:27,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:27,277 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:27,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [238066035] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:27,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809128426] [2021-11-07 01:14:27,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:27,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:14:27,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:14:27,279 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:14:27,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-07 01:14:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:28,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:14:28,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:28,787 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:28,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:32,890 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:32,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809128426] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:32,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:14:32,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18, 18, 18, 18] total 49 [2021-11-07 01:14:32,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029088902] [2021-11-07 01:14:32,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-07 01:14:32,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:32,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-07 01:14:32,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=592, Invalid=1760, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 01:14:32,894 INFO L87 Difference]: Start difference. First operand 1235 states and 1431 transitions. Second operand has 49 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 49 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:03,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:03,364 INFO L93 Difference]: Finished difference Result 14836 states and 17023 transitions. [2021-11-07 01:15:03,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-11-07 01:15:03,365 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 49 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-07 01:15:03,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:03,393 INFO L225 Difference]: With dead ends: 14836 [2021-11-07 01:15:03,394 INFO L226 Difference]: Without dead ends: 14836 [2021-11-07 01:15:03,398 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2957 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=3045, Invalid=8511, Unknown=0, NotChecked=0, Total=11556 [2021-11-07 01:15:03,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14836 states. [2021-11-07 01:15:03,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14836 to 1271. [2021-11-07 01:15:03,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 843 states have (on average 1.753262158956109) internal successors, (1478), 1270 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:03,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1478 transitions. [2021-11-07 01:15:03,480 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1478 transitions. Word has length 85 [2021-11-07 01:15:03,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:03,480 INFO L470 AbstractCegarLoop]: Abstraction has 1271 states and 1478 transitions. [2021-11-07 01:15:03,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 49 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:03,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1478 transitions. [2021-11-07 01:15:03,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-07 01:15:03,482 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:03,482 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] [2021-11-07 01:15:03,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:03,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:03,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:04,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:15:04,087 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-07 01:15:04,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:04,088 INFO L85 PathProgramCache]: Analyzing trace with hash -2300123, now seen corresponding path program 2 times [2021-11-07 01:15:04,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:04,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418020029] [2021-11-07 01:15:04,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:15:04,089 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:04,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:04,090 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:04,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-07 01:15:05,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:15:05,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:15:05,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 01:15:05,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:06,965 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:06,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:09,846 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:09,846 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:09,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418020029] [2021-11-07 01:15:09,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418020029] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:15:09,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [553059892] [2021-11-07 01:15:09,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:15:09,846 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:15:09,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:15:09,847 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:15:09,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-07 01:15:11,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:15:11,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:15:11,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 01:15:11,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:11,946 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:11,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:12,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [553059892] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:15:12,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087448462] [2021-11-07 01:15:12,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:15:12,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:15:12,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:15:12,240 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:15:12,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee09709-a66b-4dce-9444-5bcf5ba0e116/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-07 01:15:46,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:15:46,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:15:46,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-07 01:15:46,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:46,441 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:15:46,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-07 01:15:46,575 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 [2021-11-07 01:15:47,223 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-07 01:15:47,224 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 [2021-11-07 01:15:47,500 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:15:47,500 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 32 treesize of output 34 [2021-11-07 01:15:47,781 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:15:47,781 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 32 treesize of output 34 [2021-11-07 01:15:48,085 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:15:48,085 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 32 treesize of output 34 [2021-11-07 01:15:48,379 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:15:48,379 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 32 treesize of output 34 [2021-11-07 01:15:48,725 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:15:48,726 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 32 treesize of output 34 [2021-11-07 01:15:49,058 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:15:49,058 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 32 treesize of output 34 [2021-11-07 01:15:49,348 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:15:49,348 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 32 treesize of output 34 [2021-11-07 01:15:49,632 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:15:49,632 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 32 treesize of output 34 [2021-11-07 01:15:49,928 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:15:49,928 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 32 treesize of output 34 [2021-11-07 01:15:50,242 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:15:50,243 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 32 treesize of output 34 [2021-11-07 01:15:51,946 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:15:51,948 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 32 treesize of output 34 [2021-11-07 01:15:52,238 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:15:52,238 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 32 treesize of output 34 [2021-11-07 01:15:52,520 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:15:52,520 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 32 treesize of output 34 [2021-11-07 01:15:52,801 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:15:52,801 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 32 treesize of output 34 [2021-11-07 01:15:57,318 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:15:57,318 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 32 treesize of output 34 [2021-11-07 01:15:57,582 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:15:57,583 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 32 treesize of output 34 [2021-11-07 01:15:57,840 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:15:57,841 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 32 treesize of output 34 [2021-11-07 01:16:00,149 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:16:00,149 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 32 treesize of output 34 [2021-11-07 01:16:02,155 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:16:02,156 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 32 treesize of output 34 [2021-11-07 01:16:02,427 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:16:02,427 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 32 treesize of output 34 [2021-11-07 01:16:03,875 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:16:03,875 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 32 treesize of output 34 [2021-11-07 01:16:04,126 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:16:04,126 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 32 treesize of output 34 [2021-11-07 01:16:05,820 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:16:05,820 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 32 treesize of output 34 [2021-11-07 01:16:06,084 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:16:06,084 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 32 treesize of output 34 [2021-11-07 01:16:09,935 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:16:09,935 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 32 treesize of output 34 [2021-11-07 01:16:10,216 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:16:10,216 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 32 treesize of output 34 [2021-11-07 01:16:11,605 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:16:11,605 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 32 treesize of output 34 [2021-11-07 01:16:11,861 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 01:16:11,861 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 32 treesize of output 34 [2021-11-07 01:16:16,045 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 01:16:16,046 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 [2021-11-07 01:16:16,405 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-07 01:16:16,405 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 [2021-11-07 01:16:16,507 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2021-11-07 01:16:16,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:43,226 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ BitVec 32)) (|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278_316| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278_316| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset))))))) (_ bv1 1)))) is different from false [2021-11-07 01:19:57,822 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ BitVec 32)) (|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278_328| (_ BitVec 32))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278_328| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset))))))))))) is different from false [2021-11-07 01:20:02,388 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ BitVec 32)) (|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278_332| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278_332| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset))))))) (_ bv1 1)))) is different from false [2021-11-07 01:20:07,110 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ BitVec 32)) (|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278_336| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278_336| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset))))))) (_ bv1 1)))) is different from false [2021-11-07 01:20:11,992 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ BitVec 32)) (|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278_340| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278_340| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset)))))))))) (_ bv1 1)))) is different from false