./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/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_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8de283a79f01a407383b7daa040c59e7c5c73f52f0f9c705f7021a208716cd24 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:33:01,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:33:01,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:33:01,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:33:01,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:33:02,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:33:02,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:33:02,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:33:02,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:33:02,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:33:02,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:33:02,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:33:02,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:33:02,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:33:02,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:33:02,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:33:02,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:33:02,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:33:02,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:33:02,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:33:02,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:33:02,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:33:02,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:33:02,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:33:02,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:33:02,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:33:02,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:33:02,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:33:02,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:33:02,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:33:02,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:33:02,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:33:02,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:33:02,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:33:02,071 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:33:02,071 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:33:02,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:33:02,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:33:02,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:33:02,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:33:02,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:33:02,076 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:33:02,120 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:33:02,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:33:02,122 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:33:02,122 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:33:02,123 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:33:02,123 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:33:02,123 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:33:02,123 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:33:02,124 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:33:02,124 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:33:02,125 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:33:02,125 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:33:02,126 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:33:02,126 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:33:02,126 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:33:02,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:33:02,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:33:02,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:33:02,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:33:02,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:33:02,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:33:02,128 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:33:02,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:33:02,129 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:33:02,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:33:02,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:33:02,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:33:02,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:33:02,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:33:02,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:33:02,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:33:02,132 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:33:02,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:33:02,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:33:02,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:33:02,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:33:02,134 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_83d40390-baec-423a-a580-3f91b45f4615/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8de283a79f01a407383b7daa040c59e7c5c73f52f0f9c705f7021a208716cd24 [2021-11-07 01:33:02,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:33:02,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:33:02,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:33:02,432 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:33:02,433 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:33:02,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i [2021-11-07 01:33:02,500 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/data/093ddda90/fc2df1b4e6974f93ab91f333873d3d78/FLAG933cd82a0 [2021-11-07 01:33:03,413 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:33:03,414 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i [2021-11-07 01:33:03,466 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/data/093ddda90/fc2df1b4e6974f93ab91f333873d3d78/FLAG933cd82a0 [2021-11-07 01:33:03,889 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/data/093ddda90/fc2df1b4e6974f93ab91f333873d3d78 [2021-11-07 01:33:03,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:33:03,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:33:03,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:33:03,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:33:03,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:33:03,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:33:03" (1/1) ... [2021-11-07 01:33:03,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a877598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:03, skipping insertion in model container [2021-11-07 01:33:03,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:33:03" (1/1) ... [2021-11-07 01:33:03,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:33:04,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:33:04,793 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_83d40390-baec-423a-a580-3f91b45f4615/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4498,4511] [2021-11-07 01:33:04,818 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_83d40390-baec-423a-a580-3f91b45f4615/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4558,4571] [2021-11-07 01:33:04,873 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:33:04,879 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:33:06,257 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:06,258 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:06,259 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:06,260 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:06,261 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:06,277 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:06,278 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:06,284 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:06,285 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:06,784 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:33:06,785 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:33:06,786 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:33:06,788 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:33:06,790 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:33:06,791 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:33:06,791 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:33:06,799 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:33:06,801 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:33:06,806 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:33:07,054 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:33:07,155 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:07,157 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:07,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:33:07,307 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 01:33:07,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@798a3e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:07, skipping insertion in model container [2021-11-07 01:33:07,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:33:07,309 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:33:07,311 INFO L168 Benchmark]: Toolchain (without parser) took 3409.56 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 61.6 MB in the beginning and 66.3 MB in the end (delta: -4.7 MB). Peak memory consumption was 42.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:33:07,311 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory is still 63.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:33:07,312 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3406.96 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 61.4 MB in the beginning and 66.3 MB in the end (delta: -4.9 MB). Peak memory consumption was 42.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:33:07,314 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory is still 63.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 3406.96 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 61.4 MB in the beginning and 66.3 MB in the end (delta: -4.9 MB). Peak memory consumption was 42.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6990]: 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_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/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_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8de283a79f01a407383b7daa040c59e7c5c73f52f0f9c705f7021a208716cd24 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:33:09,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:33:09,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:33:09,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:33:09,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:33:09,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:33:09,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:33:09,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:33:09,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:33:09,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:33:09,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:33:09,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:33:09,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:33:09,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:33:09,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:33:09,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:33:09,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:33:09,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:33:09,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:33:09,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:33:09,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:33:09,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:33:09,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:33:09,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:33:09,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:33:09,704 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:33:09,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:33:09,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:33:09,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:33:09,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:33:09,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:33:09,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:33:09,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:33:09,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:33:09,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:33:09,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:33:09,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:33:09,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:33:09,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:33:09,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:33:09,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:33:09,720 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:33:09,751 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:33:09,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:33:09,753 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:33:09,753 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:33:09,753 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:33:09,753 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:33:09,753 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:33:09,754 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:33:09,754 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:33:09,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:33:09,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:33:09,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:33:09,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:33:09,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:33:09,756 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:33:09,756 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:33:09,756 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:33:09,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:33:09,756 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:33:09,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:33:09,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:33:09,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:33:09,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:33:09,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:33:09,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:33:09,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:33:09,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:33:09,758 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:33:09,758 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:33:09,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:33:09,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:33:09,759 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:33:09,759 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_83d40390-baec-423a-a580-3f91b45f4615/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8de283a79f01a407383b7daa040c59e7c5c73f52f0f9c705f7021a208716cd24 [2021-11-07 01:33:10,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:33:10,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:33:10,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:33:10,212 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:33:10,213 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:33:10,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i [2021-11-07 01:33:10,291 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/data/faa347f63/288e8359f725496c88c14dcec4f67397/FLAGafdf64d9f [2021-11-07 01:33:11,229 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:33:11,230 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i [2021-11-07 01:33:11,291 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/data/faa347f63/288e8359f725496c88c14dcec4f67397/FLAGafdf64d9f [2021-11-07 01:33:11,715 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/data/faa347f63/288e8359f725496c88c14dcec4f67397 [2021-11-07 01:33:11,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:33:11,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:33:11,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:33:11,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:33:11,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:33:11,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:33:11" (1/1) ... [2021-11-07 01:33:11,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a1b8595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:11, skipping insertion in model container [2021-11-07 01:33:11,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:33:11" (1/1) ... [2021-11-07 01:33:11,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:33:12,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:33:12,427 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_83d40390-baec-423a-a580-3f91b45f4615/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4498,4511] [2021-11-07 01:33:12,435 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_83d40390-baec-423a-a580-3f91b45f4615/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4558,4571] [2021-11-07 01:33:12,465 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:33:12,472 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:33:13,821 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:13,821 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:13,822 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:13,823 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:13,824 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:13,846 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:13,848 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:13,851 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:13,853 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:14,355 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:33:14,357 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:33:14,358 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:33:14,359 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:33:14,361 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:33:14,362 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:33:14,362 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:33:14,363 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:33:14,364 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:33:14,364 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:33:14,545 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:33:14,639 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:14,640 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:14,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:33:14,829 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:33:14,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:33:14,891 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_83d40390-baec-423a-a580-3f91b45f4615/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4498,4511] [2021-11-07 01:33:14,892 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_83d40390-baec-423a-a580-3f91b45f4615/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4558,4571] [2021-11-07 01:33:14,894 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:33:14,894 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:33:14,947 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:14,948 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:14,948 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:14,949 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:14,949 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:14,968 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:14,968 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:14,970 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:14,971 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:15,024 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:33:15,025 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:33:15,026 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:33:15,027 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:33:15,028 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:33:15,034 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:33:15,035 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:33:15,035 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:33:15,036 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:33:15,037 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:33:15,087 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:33:15,175 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:15,175 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:15,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:33:15,272 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:33:15,298 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_83d40390-baec-423a-a580-3f91b45f4615/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4498,4511] [2021-11-07 01:33:15,299 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_83d40390-baec-423a-a580-3f91b45f4615/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4558,4571] [2021-11-07 01:33:15,301 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:33:15,302 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:33:15,366 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:15,367 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:15,367 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:15,367 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:15,368 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:15,374 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:15,375 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:15,375 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:15,376 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:15,409 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:33:15,410 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:33:15,411 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:33:15,411 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:33:15,412 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:33:15,412 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:33:15,413 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:33:15,413 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:33:15,414 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:33:15,414 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:33:15,440 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:33:15,533 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:15,534 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:33:15,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:33:15,927 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:33:15,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:15 WrapperNode [2021-11-07 01:33:15,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:33:15,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:33:15,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:33:15,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:33:15,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:15" (1/1) ... [2021-11-07 01:33:16,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:15" (1/1) ... [2021-11-07 01:33:16,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:33:16,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:33:16,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:33:16,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:33:16,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:15" (1/1) ... [2021-11-07 01:33:16,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:15" (1/1) ... [2021-11-07 01:33:16,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:15" (1/1) ... [2021-11-07 01:33:16,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:15" (1/1) ... [2021-11-07 01:33:16,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:15" (1/1) ... [2021-11-07 01:33:16,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:15" (1/1) ... [2021-11-07 01:33:16,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:15" (1/1) ... [2021-11-07 01:33:16,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:33:16,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:33:16,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:33:16,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:33:16,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:15" (1/1) ... [2021-11-07 01:33:16,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:33:16,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:33:16,437 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:33:16,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:33:16,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:33:16,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:33:16,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:33:16,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:33:16,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:33:16,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:33:16,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:33:16,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:33:16,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:33:16,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:33:16,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:33:16,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:33:30,246 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:33:30,246 INFO L299 CfgBuilder]: Removed 61 assume(true) statements. [2021-11-07 01:33:30,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:33:30 BoogieIcfgContainer [2021-11-07 01:33:30,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:33:30,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:33:30,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:33:30,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:33:30,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:33:11" (1/3) ... [2021-11-07 01:33:30,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e9c4a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:33:30, skipping insertion in model container [2021-11-07 01:33:30,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:15" (2/3) ... [2021-11-07 01:33:30,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e9c4a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:33:30, skipping insertion in model container [2021-11-07 01:33:30,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:33:30" (3/3) ... [2021-11-07 01:33:30,256 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_eq_ignore_case_harness.i [2021-11-07 01:33:30,262 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:33:30,262 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-07 01:33:30,310 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:33:30,315 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 01:33:30,316 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 01:33:30,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 63 states have (on average 1.4761904761904763) internal successors, (93), 66 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 01:33:30,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 01:33:30,337 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:33:30,338 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] [2021-11-07 01:33:30,338 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:33:30,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:33:30,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1732099540, now seen corresponding path program 1 times [2021-11-07 01:33:30,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:33:30,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348317629] [2021-11-07 01:33:30,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:30,368 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:33:30,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:33:30,372 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:33:30,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:33:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:34,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:33:34,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:34,549 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 01:33:34,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:34,644 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 01:33:34,645 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:33:34,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348317629] [2021-11-07 01:33:34,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348317629] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:33:34,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:33:34,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:33:34,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456896680] [2021-11-07 01:33:34,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:33:34,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:33:34,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:33:34,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:33:34,679 INFO L87 Difference]: Start difference. First operand has 67 states, 63 states have (on average 1.4761904761904763) internal successors, (93), 66 states have internal predecessors, (93), 0 states have call successors, (0), 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 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:34,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:33:34,713 INFO L93 Difference]: Finished difference Result 131 states and 182 transitions. [2021-11-07 01:33:34,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:33:34,714 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-07 01:33:34,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:33:34,723 INFO L225 Difference]: With dead ends: 131 [2021-11-07 01:33:34,723 INFO L226 Difference]: Without dead ends: 61 [2021-11-07 01:33:34,726 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:33:34,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-07 01:33:34,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-11-07 01:33:34,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 60 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 01:33:34,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2021-11-07 01:33:34,768 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 27 [2021-11-07 01:33:34,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:33:34,769 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2021-11-07 01:33:34,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:34,769 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2021-11-07 01:33:34,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 01:33:34,770 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:33:34,771 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] [2021-11-07 01:33:34,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:33:34,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:33:34,983 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:33:34,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:33:34,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1816466470, now seen corresponding path program 1 times [2021-11-07 01:33:34,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:33:34,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325551991] [2021-11-07 01:33:34,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:34,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:33:34,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:33:34,990 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:33:35,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:33:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:38,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:33:38,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:40,011 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 01:33:40,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:40,590 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 01:33:40,590 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:33:40,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325551991] [2021-11-07 01:33:40,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325551991] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:33:40,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:33:40,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 6] imperfect sequences [] total 15 [2021-11-07 01:33:40,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439049098] [2021-11-07 01:33:40,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 01:33:40,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:33:40,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 01:33:40,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:33:40,595 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 01:33:43,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:33:43,965 INFO L93 Difference]: Finished difference Result 371 states and 426 transitions. [2021-11-07 01:33:43,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-07 01:33:43,966 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-07 01:33:43,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:33:43,971 INFO L225 Difference]: With dead ends: 371 [2021-11-07 01:33:43,971 INFO L226 Difference]: Without dead ends: 348 [2021-11-07 01:33:43,976 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=275, Invalid=1057, Unknown=0, NotChecked=0, Total=1332 [2021-11-07 01:33:43,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-11-07 01:33:43,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 116. [2021-11-07 01:33:43,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 113 states have (on average 1.1946902654867257) internal successors, (135), 115 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 01:33:43,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 135 transitions. [2021-11-07 01:33:43,999 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 135 transitions. Word has length 27 [2021-11-07 01:33:43,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:33:44,000 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 135 transitions. [2021-11-07 01:33:44,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 01:33:44,000 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 135 transitions. [2021-11-07 01:33:44,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 01:33:44,002 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:33:44,002 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] [2021-11-07 01:33:44,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 01:33:44,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:33:44,220 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:33:44,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:33:44,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1086636907, now seen corresponding path program 1 times [2021-11-07 01:33:44,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:33:44,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3161536] [2021-11-07 01:33:44,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:44,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:33:44,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:33:44,227 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:33:44,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:33:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:48,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:33:48,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:48,323 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 01:33:48,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:48,491 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 01:33:48,491 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:33:48,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3161536] [2021-11-07 01:33:48,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3161536] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:33:48,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:33:48,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:33:48,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042000268] [2021-11-07 01:33:48,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:33:48,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:33:48,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:33:48,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:33:48,494 INFO L87 Difference]: Start difference. First operand 116 states and 135 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states 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 01:33:48,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:33:48,766 INFO L93 Difference]: Finished difference Result 138 states and 159 transitions. [2021-11-07 01:33:48,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:33:48,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 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 29 [2021-11-07 01:33:48,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:33:48,769 INFO L225 Difference]: With dead ends: 138 [2021-11-07 01:33:48,769 INFO L226 Difference]: Without dead ends: 112 [2021-11-07 01:33:48,770 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:33:48,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-07 01:33:48,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 92. [2021-11-07 01:33:48,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 89 states have (on average 1.202247191011236) internal successors, (107), 91 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 01:33:48,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2021-11-07 01:33:48,780 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 29 [2021-11-07 01:33:48,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:33:48,780 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2021-11-07 01:33:48,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states 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 01:33:48,781 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2021-11-07 01:33:48,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 01:33:48,782 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:33:48,782 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] [2021-11-07 01:33:48,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-07 01:33:48,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:33:48,998 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:33:48,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:33:48,999 INFO L85 PathProgramCache]: Analyzing trace with hash -358402595, now seen corresponding path program 1 times [2021-11-07 01:33:49,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:33:49,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730550671] [2021-11-07 01:33:49,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:49,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:33:49,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:33:49,003 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:33:49,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:33:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:52,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 1743 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-07 01:33:52,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:54,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:54,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:56,562 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 01:33:56,563 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:33:56,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730550671] [2021-11-07 01:33:56,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730550671] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:33:56,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:33:56,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 15] imperfect sequences [] total 30 [2021-11-07 01:33:56,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169916505] [2021-11-07 01:33:56,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-07 01:33:56,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:33:56,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-07 01:33:56,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2021-11-07 01:33:56,565 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 01:34:03,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:03,668 INFO L93 Difference]: Finished difference Result 323 states and 364 transitions. [2021-11-07 01:34:03,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-07 01:34:03,669 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 0 states have call successors, (0), 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 33 [2021-11-07 01:34:03,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:03,671 INFO L225 Difference]: With dead ends: 323 [2021-11-07 01:34:03,672 INFO L226 Difference]: Without dead ends: 301 [2021-11-07 01:34:03,674 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=694, Invalid=3088, Unknown=0, NotChecked=0, Total=3782 [2021-11-07 01:34:03,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-11-07 01:34:03,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 122. [2021-11-07 01:34:03,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 119 states have (on average 1.1764705882352942) internal successors, (140), 121 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 01:34:03,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 140 transitions. [2021-11-07 01:34:03,689 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 140 transitions. Word has length 33 [2021-11-07 01:34:03,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:03,689 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 140 transitions. [2021-11-07 01:34:03,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 01:34:03,690 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 140 transitions. [2021-11-07 01:34:03,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:34:03,692 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:03,692 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 01:34:03,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:03,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:03,893 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:34:03,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:03,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1248189667, now seen corresponding path program 1 times [2021-11-07 01:34:03,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:03,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683415552] [2021-11-07 01:34:03,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:03,897 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:03,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:03,903 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:03,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:34:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:08,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 1766 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:34:08,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:08,179 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 01:34:08,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:08,296 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 01:34:08,297 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:08,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683415552] [2021-11-07 01:34:08,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683415552] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:08,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:08,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:34:08,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254441222] [2021-11-07 01:34:08,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:34:08,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:08,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:34:08,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:34:08,299 INFO L87 Difference]: Start difference. First operand 122 states and 140 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 01:34:08,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:08,366 INFO L93 Difference]: Finished difference Result 154 states and 176 transitions. [2021-11-07 01:34:08,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:34:08,368 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 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 01:34:08,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:08,369 INFO L225 Difference]: With dead ends: 154 [2021-11-07 01:34:08,369 INFO L226 Difference]: Without dead ends: 142 [2021-11-07 01:34:08,370 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 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 01:34:08,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-07 01:34:08,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 126. [2021-11-07 01:34:08,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.170731707317073) internal successors, (144), 125 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 01:34:08,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 144 transitions. [2021-11-07 01:34:08,391 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 144 transitions. Word has length 34 [2021-11-07 01:34:08,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:08,393 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 144 transitions. [2021-11-07 01:34:08,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 01:34:08,394 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 144 transitions. [2021-11-07 01:34:08,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:34:08,399 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:08,399 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 01:34:08,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:08,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:08,613 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:34:08,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:08,613 INFO L85 PathProgramCache]: Analyzing trace with hash -567631149, now seen corresponding path program 1 times [2021-11-07 01:34:08,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:08,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387577331] [2021-11-07 01:34:08,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:08,616 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:08,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:08,617 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:08,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:34:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:13,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-07 01:34:13,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:14,029 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 01:34:14,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:14,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:14,618 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:14,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387577331] [2021-11-07 01:34:14,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387577331] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:14,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:14,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 9] imperfect sequences [] total 16 [2021-11-07 01:34:14,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925676] [2021-11-07 01:34:14,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 01:34:14,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:14,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 01:34:14,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:34:14,621 INFO L87 Difference]: Start difference. First operand 126 states and 144 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:17,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:17,372 INFO L93 Difference]: Finished difference Result 342 states and 387 transitions. [2021-11-07 01:34:17,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 01:34:17,372 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-07 01:34:17,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:17,374 INFO L225 Difference]: With dead ends: 342 [2021-11-07 01:34:17,374 INFO L226 Difference]: Without dead ends: 290 [2021-11-07 01:34:17,375 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=340, Invalid=992, Unknown=0, NotChecked=0, Total=1332 [2021-11-07 01:34:17,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-07 01:34:17,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 155. [2021-11-07 01:34:17,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 152 states have (on average 1.1644736842105263) internal successors, (177), 154 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 01:34:17,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 177 transitions. [2021-11-07 01:34:17,389 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 177 transitions. Word has length 34 [2021-11-07 01:34:17,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:17,389 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 177 transitions. [2021-11-07 01:34:17,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:17,390 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 177 transitions. [2021-11-07 01:34:17,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-07 01:34:17,391 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:17,392 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:17,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:17,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:17,608 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:34:17,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:17,608 INFO L85 PathProgramCache]: Analyzing trace with hash 513264780, now seen corresponding path program 1 times [2021-11-07 01:34:17,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:17,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374436413] [2021-11-07 01:34:17,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:17,613 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:17,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:17,614 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:17,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:34:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:21,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-07 01:34:21,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:23,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:23,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:25,199 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 01:34:25,200 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:25,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374436413] [2021-11-07 01:34:25,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374436413] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:25,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:25,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 15] imperfect sequences [] total 30 [2021-11-07 01:34:25,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523689192] [2021-11-07 01:34:25,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-07 01:34:25,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:25,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-07 01:34:25,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2021-11-07 01:34:25,201 INFO L87 Difference]: Start difference. First operand 155 states and 177 transitions. Second operand has 30 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 30 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:32,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:32,038 INFO L93 Difference]: Finished difference Result 316 states and 359 transitions. [2021-11-07 01:34:32,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-07 01:34:32,039 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 30 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-07 01:34:32,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:32,040 INFO L225 Difference]: With dead ends: 316 [2021-11-07 01:34:32,040 INFO L226 Difference]: Without dead ends: 284 [2021-11-07 01:34:32,042 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=731, Invalid=3301, Unknown=0, NotChecked=0, Total=4032 [2021-11-07 01:34:32,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-11-07 01:34:32,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 129. [2021-11-07 01:34:32,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 126 states have (on average 1.1746031746031746) internal successors, (148), 128 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 01:34:32,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 148 transitions. [2021-11-07 01:34:32,051 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 148 transitions. Word has length 35 [2021-11-07 01:34:32,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:32,052 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 148 transitions. [2021-11-07 01:34:32,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 30 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:32,052 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 148 transitions. [2021-11-07 01:34:32,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 01:34:32,053 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:32,053 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] [2021-11-07 01:34:32,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-07 01:34:32,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:32,262 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:34:32,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:32,263 INFO L85 PathProgramCache]: Analyzing trace with hash 2114197848, now seen corresponding path program 1 times [2021-11-07 01:34:32,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:32,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206647446] [2021-11-07 01:34:32,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:32,266 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:32,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:32,267 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:32,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:34:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:36,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 1756 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 01:34:36,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:37,843 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 01:34:37,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:39,465 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 01:34:39,465 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:39,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206647446] [2021-11-07 01:34:39,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206647446] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:39,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:39,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18, 16] imperfect sequences [] total 32 [2021-11-07 01:34:39,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295346169] [2021-11-07 01:34:39,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-07 01:34:39,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:39,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-07 01:34:39,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2021-11-07 01:34:39,468 INFO L87 Difference]: Start difference. First operand 129 states and 148 transitions. Second operand has 32 states, 32 states have (on average 2.09375) internal successors, (67), 32 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:49,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:49,840 INFO L93 Difference]: Finished difference Result 336 states and 371 transitions. [2021-11-07 01:34:49,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-07 01:34:49,841 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.09375) internal successors, (67), 32 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-07 01:34:49,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:49,843 INFO L225 Difference]: With dead ends: 336 [2021-11-07 01:34:49,843 INFO L226 Difference]: Without dead ends: 323 [2021-11-07 01:34:49,846 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1212 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=1092, Invalid=4760, Unknown=0, NotChecked=0, Total=5852 [2021-11-07 01:34:49,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-11-07 01:34:49,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 152. [2021-11-07 01:34:49,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 149 states have (on average 1.1610738255033557) internal successors, (173), 151 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 01:34:49,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 173 transitions. [2021-11-07 01:34:49,858 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 173 transitions. Word has length 36 [2021-11-07 01:34:49,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:49,858 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 173 transitions. [2021-11-07 01:34:49,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.09375) internal successors, (67), 32 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:49,858 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 173 transitions. [2021-11-07 01:34:49,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 01:34:49,859 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:49,860 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] [2021-11-07 01:34:49,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-07 01:34:50,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:50,062 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:34:50,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:50,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1836970290, now seen corresponding path program 1 times [2021-11-07 01:34:50,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:50,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903246355] [2021-11-07 01:34:50,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:50,066 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:50,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:50,067 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:50,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:34:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:54,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 1756 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 01:34:54,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:55,572 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 01:34:55,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:57,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:57,583 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:57,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903246355] [2021-11-07 01:34:57,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903246355] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:57,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:57,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18, 16] imperfect sequences [] total 32 [2021-11-07 01:34:57,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68183212] [2021-11-07 01:34:57,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-07 01:34:57,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:57,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-07 01:34:57,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=820, Unknown=0, NotChecked=0, Total=992 [2021-11-07 01:34:57,585 INFO L87 Difference]: Start difference. First operand 152 states and 173 transitions. Second operand has 32 states, 32 states have (on average 2.09375) internal successors, (67), 32 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:05,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:05,933 INFO L93 Difference]: Finished difference Result 360 states and 401 transitions. [2021-11-07 01:35:05,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-07 01:35:05,933 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.09375) internal successors, (67), 32 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-07 01:35:05,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:05,935 INFO L225 Difference]: With dead ends: 360 [2021-11-07 01:35:05,935 INFO L226 Difference]: Without dead ends: 336 [2021-11-07 01:35:05,937 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=739, Invalid=3421, Unknown=0, NotChecked=0, Total=4160 [2021-11-07 01:35:05,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-11-07 01:35:05,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 157. [2021-11-07 01:35:05,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 154 states have (on average 1.1623376623376624) internal successors, (179), 156 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 01:35:05,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 179 transitions. [2021-11-07 01:35:05,950 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 179 transitions. Word has length 36 [2021-11-07 01:35:05,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:05,950 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 179 transitions. [2021-11-07 01:35:05,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.09375) internal successors, (67), 32 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:05,950 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 179 transitions. [2021-11-07 01:35:05,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 01:35:05,951 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:05,952 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] [2021-11-07 01:35:05,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-07 01:35:06,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:06,159 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:35:06,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:06,159 INFO L85 PathProgramCache]: Analyzing trace with hash -865834336, now seen corresponding path program 1 times [2021-11-07 01:35:06,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:06,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703167797] [2021-11-07 01:35:06,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:06,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:06,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:06,165 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:06,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:35:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:11,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:35:11,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:11,598 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 01:35:11,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:11,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:35:11,952 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:11,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703167797] [2021-11-07 01:35:11,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703167797] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:11,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:11,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2021-11-07 01:35:11,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401309587] [2021-11-07 01:35:11,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:35:11,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:11,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:35:11,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:35:11,955 INFO L87 Difference]: Start difference. First operand 157 states and 179 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:13,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:13,945 INFO L93 Difference]: Finished difference Result 298 states and 331 transitions. [2021-11-07 01:35:13,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 01:35:13,946 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-07 01:35:13,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:13,948 INFO L225 Difference]: With dead ends: 298 [2021-11-07 01:35:13,948 INFO L226 Difference]: Without dead ends: 269 [2021-11-07 01:35:13,949 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-11-07 01:35:13,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-11-07 01:35:13,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 157. [2021-11-07 01:35:13,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 154 states have (on average 1.155844155844156) internal successors, (178), 156 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 01:35:13,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 178 transitions. [2021-11-07 01:35:13,970 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 178 transitions. Word has length 37 [2021-11-07 01:35:13,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:13,970 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 178 transitions. [2021-11-07 01:35:13,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:13,970 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 178 transitions. [2021-11-07 01:35:13,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 01:35:13,976 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:13,976 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] [2021-11-07 01:35:14,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:14,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:14,198 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:35:14,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:14,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1565375815, now seen corresponding path program 1 times [2021-11-07 01:35:14,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:14,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206072714] [2021-11-07 01:35:14,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:14,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:14,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:14,205 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:14,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:35:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:18,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 1762 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-07 01:35:18,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:20,250 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 01:35:20,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:22,992 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 01:35:22,992 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:22,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206072714] [2021-11-07 01:35:22,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206072714] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:22,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:22,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18, 16] imperfect sequences [] total 32 [2021-11-07 01:35:22,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888731529] [2021-11-07 01:35:22,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-07 01:35:22,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:22,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-07 01:35:22,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2021-11-07 01:35:22,995 INFO L87 Difference]: Start difference. First operand 157 states and 178 transitions. Second operand has 32 states, 32 states have (on average 2.3125) internal successors, (74), 32 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:36,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:36,313 INFO L93 Difference]: Finished difference Result 297 states and 332 transitions. [2021-11-07 01:35:36,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-07 01:35:36,314 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 32 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-07 01:35:36,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:36,316 INFO L225 Difference]: With dead ends: 297 [2021-11-07 01:35:36,316 INFO L226 Difference]: Without dead ends: 275 [2021-11-07 01:35:36,318 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1271 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=1105, Invalid=4901, Unknown=0, NotChecked=0, Total=6006 [2021-11-07 01:35:36,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-07 01:35:36,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 152. [2021-11-07 01:35:36,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 149 states have (on average 1.1476510067114094) internal successors, (171), 151 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 01:35:36,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 171 transitions. [2021-11-07 01:35:36,329 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 171 transitions. Word has length 38 [2021-11-07 01:35:36,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:36,330 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 171 transitions. [2021-11-07 01:35:36,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 32 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:36,330 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 171 transitions. [2021-11-07 01:35:36,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 01:35:36,331 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:36,331 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] [2021-11-07 01:35:36,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:36,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:36,545 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:35:36,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:36,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1243884861, now seen corresponding path program 1 times [2021-11-07 01:35:36,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:36,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212227566] [2021-11-07 01:35:36,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:36,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:36,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:36,570 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:36,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:35:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:42,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 1762 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-07 01:35:42,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:44,595 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 01:35:44,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:46,810 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 01:35:46,810 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:46,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212227566] [2021-11-07 01:35:46,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212227566] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:46,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:46,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18, 16] imperfect sequences [] total 32 [2021-11-07 01:35:46,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114339332] [2021-11-07 01:35:46,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-07 01:35:46,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:46,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-07 01:35:46,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=820, Unknown=0, NotChecked=0, Total=992 [2021-11-07 01:35:46,813 INFO L87 Difference]: Start difference. First operand 152 states and 171 transitions. Second operand has 32 states, 32 states have (on average 2.3125) internal successors, (74), 32 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:53,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:53,683 INFO L93 Difference]: Finished difference Result 277 states and 310 transitions. [2021-11-07 01:35:53,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-07 01:35:53,683 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 32 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-07 01:35:53,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:53,685 INFO L225 Difference]: With dead ends: 277 [2021-11-07 01:35:53,685 INFO L226 Difference]: Without dead ends: 261 [2021-11-07 01:35:53,687 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=787, Invalid=3635, Unknown=0, NotChecked=0, Total=4422 [2021-11-07 01:35:53,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-11-07 01:35:53,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 138. [2021-11-07 01:35:53,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 135 states have (on average 1.1555555555555554) internal successors, (156), 137 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 01:35:53,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 156 transitions. [2021-11-07 01:35:53,697 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 156 transitions. Word has length 38 [2021-11-07 01:35:53,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:53,698 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 156 transitions. [2021-11-07 01:35:53,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 32 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:53,698 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 156 transitions. [2021-11-07 01:35:53,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-07 01:35:53,699 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:53,699 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] [2021-11-07 01:35:53,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:53,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:53,918 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:35:53,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:53,919 INFO L85 PathProgramCache]: Analyzing trace with hash -640748201, now seen corresponding path program 1 times [2021-11-07 01:35:53,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:53,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1842857755] [2021-11-07 01:35:53,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:53,924 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:53,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:53,925 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:53,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:35:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:58,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:35:58,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:58,430 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 01:35:58,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:58,499 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 01:35:58,499 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:58,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1842857755] [2021-11-07 01:35:58,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1842857755] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:58,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:58,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:35:58,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823004419] [2021-11-07 01:35:58,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:35:58,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:58,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:35:58,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:35:58,501 INFO L87 Difference]: Start difference. First operand 138 states and 156 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 01:35:58,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:58,544 INFO L93 Difference]: Finished difference Result 169 states and 190 transitions. [2021-11-07 01:35:58,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:35:58,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-11-07 01:35:58,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:58,548 INFO L225 Difference]: With dead ends: 169 [2021-11-07 01:35:58,548 INFO L226 Difference]: Without dead ends: 151 [2021-11-07 01:35:58,549 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 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 01:35:58,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-07 01:35:58,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 138. [2021-11-07 01:35:58,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 135 states have (on average 1.1333333333333333) internal successors, (153), 137 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 01:35:58,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 153 transitions. [2021-11-07 01:35:58,560 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 153 transitions. Word has length 39 [2021-11-07 01:35:58,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:58,561 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 153 transitions. [2021-11-07 01:35:58,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 01:35:58,561 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 153 transitions. [2021-11-07 01:35:58,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 01:35:58,562 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:58,562 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] [2021-11-07 01:35:58,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:58,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:58,763 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:35:58,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:58,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1876182655, now seen corresponding path program 1 times [2021-11-07 01:35:58,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:58,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770354134] [2021-11-07 01:35:58,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:58,767 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:58,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:58,768 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:58,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:36:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:04,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 1795 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 01:36:04,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:05,726 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:36:05,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2021-11-07 01:36:05,835 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 01:36:05,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:06,583 INFO L354 Elim1Store]: treesize reduction 13, result has 82.9 percent of original size [2021-11-07 01:36:06,584 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 80 [2021-11-07 01:36:11,371 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 01:36:11,371 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:11,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770354134] [2021-11-07 01:36:11,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770354134] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:11,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:36:11,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 6] imperfect sequences [] total 13 [2021-11-07 01:36:11,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546209520] [2021-11-07 01:36:11,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:36:11,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:11,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:36:11,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:36:11,373 INFO L87 Difference]: Start difference. First operand 138 states and 153 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 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 01:36:13,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:13,100 INFO L93 Difference]: Finished difference Result 177 states and 194 transitions. [2021-11-07 01:36:13,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 01:36:13,101 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 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 40 [2021-11-07 01:36:13,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:13,103 INFO L225 Difference]: With dead ends: 177 [2021-11-07 01:36:13,103 INFO L226 Difference]: Without dead ends: 164 [2021-11-07 01:36:13,103 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2021-11-07 01:36:13,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-07 01:36:13,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 136. [2021-11-07 01:36:13,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 133 states have (on average 1.1278195488721805) internal successors, (150), 135 states have internal predecessors, (150), 0 states have call successors, (0), 0 states 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 01:36:13,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 150 transitions. [2021-11-07 01:36:13,115 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 150 transitions. Word has length 40 [2021-11-07 01:36:13,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:13,116 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 150 transitions. [2021-11-07 01:36:13,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 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 01:36:13,116 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 150 transitions. [2021-11-07 01:36:13,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 01:36:13,117 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:13,117 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] [2021-11-07 01:36:13,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-07 01:36:13,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:13,334 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:36:13,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:13,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1883205687, now seen corresponding path program 1 times [2021-11-07 01:36:13,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:13,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480155031] [2021-11-07 01:36:13,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:13,340 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:13,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:13,341 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:13,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:36:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:19,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:36:19,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:19,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:36:19,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:20,246 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 01:36:20,247 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:20,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480155031] [2021-11-07 01:36:20,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480155031] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:20,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:36:20,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 6] imperfect sequences [] total 12 [2021-11-07 01:36:20,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758950270] [2021-11-07 01:36:20,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:36:20,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:20,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:36:20,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:36:20,249 INFO L87 Difference]: Start difference. First operand 136 states and 150 transitions. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:21,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:21,602 INFO L93 Difference]: Finished difference Result 272 states and 296 transitions. [2021-11-07 01:36:21,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:36:21,604 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 01:36:21,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:21,605 INFO L225 Difference]: With dead ends: 272 [2021-11-07 01:36:21,605 INFO L226 Difference]: Without dead ends: 250 [2021-11-07 01:36:21,606 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:36:21,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-07 01:36:21,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 161. [2021-11-07 01:36:21,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 158 states have (on average 1.1329113924050633) internal successors, (179), 160 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 01:36:21,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 179 transitions. [2021-11-07 01:36:21,644 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 179 transitions. Word has length 41 [2021-11-07 01:36:21,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:21,645 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 179 transitions. [2021-11-07 01:36:21,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:21,645 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 179 transitions. [2021-11-07 01:36:21,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 01:36:21,646 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:21,646 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] [2021-11-07 01:36:21,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:21,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:21,870 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:36:21,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:21,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1569116892, now seen corresponding path program 1 times [2021-11-07 01:36:21,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:21,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029081543] [2021-11-07 01:36:21,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:21,875 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:21,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:21,876 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:21,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d40390-baec-423a-a580-3f91b45f4615/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:38:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:00,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-07 01:39:00,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:00,993 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 01:39:01,201 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:39:01,202 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 01:39:01,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:01,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 79 [2021-11-07 01:39:05,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:39:06,112 INFO L244 Elim1Store]: Index analysis took 116 ms [2021-11-07 01:39:06,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 138 [2021-11-07 01:39:09,432 INFO L354 Elim1Store]: treesize reduction 222, result has 1.3 percent of original size [2021-11-07 01:39:09,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 36 disjoint index pairs (out of 55 index pairs), introduced 13 new quantified variables, introduced 55 case distinctions, treesize of input 245 treesize of output 106 [2021-11-07 01:39:09,504 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 01:39:09,504 INFO L328 TraceCheckSpWp]: Computing backward predicates...