./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_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_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/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_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/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_88aaeed4-6095-40a1-89bf-d59cd64bb738/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 f87ca444cebdd8343e0a486129ff23acad574c7cfb073abcacffd6c901ccf3af --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:28:48,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:28:48,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:28:49,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:28:49,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:28:49,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:28:49,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:28:49,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:28:49,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:28:49,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:28:49,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:28:49,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:28:49,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:28:49,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:28:49,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:28:49,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:28:49,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:28:49,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:28:49,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:28:49,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:28:49,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:28:49,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:28:49,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:28:49,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:28:49,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:28:49,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:28:49,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:28:49,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:28:49,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:28:49,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:28:49,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:28:49,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:28:49,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:28:49,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:28:49,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:28:49,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:28:49,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:28:49,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:28:49,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:28:49,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:28:49,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:28:49,127 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:28:49,180 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:28:49,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:28:49,182 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:28:49,182 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:28:49,183 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:28:49,183 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:28:49,183 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:28:49,183 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:28:49,191 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:28:49,192 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:28:49,193 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:28:49,193 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:28:49,194 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:28:49,194 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:28:49,194 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:28:49,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:28:49,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:28:49,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:28:49,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:28:49,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:28:49,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:28:49,197 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:28:49,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:28:49,197 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:28:49,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:28:49,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:28:49,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:28:49,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:28:49,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:28:49,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:28:49,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:28:49,200 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:28:49,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:28:49,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:28:49,201 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:28:49,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:28:49,201 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_88aaeed4-6095-40a1-89bf-d59cd64bb738/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f87ca444cebdd8343e0a486129ff23acad574c7cfb073abcacffd6c901ccf3af [2021-11-07 01:28:49,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:28:49,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:28:49,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:28:49,606 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:28:49,607 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:28:49,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i [2021-11-07 01:28:49,691 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/data/0101483c3/d141f91053424f4a97c2483e6adcebd5/FLAG6cfee1540 [2021-11-07 01:28:50,662 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:28:50,663 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i [2021-11-07 01:28:50,743 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/data/0101483c3/d141f91053424f4a97c2483e6adcebd5/FLAG6cfee1540 [2021-11-07 01:28:51,110 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/data/0101483c3/d141f91053424f4a97c2483e6adcebd5 [2021-11-07 01:28:51,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:28:51,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:28:51,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:28:51,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:28:51,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:28:51,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:28:51" (1/1) ... [2021-11-07 01:28:51,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c794e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:51, skipping insertion in model container [2021-11-07 01:28:51,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:28:51" (1/1) ... [2021-11-07 01:28:51,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:28:51,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:28:51,608 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_88aaeed4-6095-40a1-89bf-d59cd64bb738/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4498,4511] [2021-11-07 01:28:51,617 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_88aaeed4-6095-40a1-89bf-d59cd64bb738/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4558,4571] [2021-11-07 01:28:51,647 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:28:51,654 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:28:53,193 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:28:53,199 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:28:53,200 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:28:53,202 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:28:53,206 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:28:53,243 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:28:53,245 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:28:53,247 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:28:53,248 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:28:53,744 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:28:53,746 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:28:53,747 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:28:53,749 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:28:53,750 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:28:53,751 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:28:53,752 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:28:53,753 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:28:53,754 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:28:53,755 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:28:53,960 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:28:54,109 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:28:54,110 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:28:54,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:28:54,282 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 01:28:54,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2ad31c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:54, skipping insertion in model container [2021-11-07 01:28:54,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:28:54,285 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:28:54,288 INFO L168 Benchmark]: Toolchain (without parser) took 3170.86 ms. Allocated memory is still 109.1 MB. Free memory was 64.2 MB in the beginning and 63.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:28:54,289 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 75.5 MB. Free memory was 50.9 MB in the beginning and 50.9 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:28:54,290 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3167.30 ms. Allocated memory is still 109.1 MB. Free memory was 64.2 MB in the beginning and 63.7 MB in the end (delta: 460.0 kB). Peak memory consumption was 27.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:28:54,294 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 75.5 MB. Free memory was 50.9 MB in the beginning and 50.9 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 3167.30 ms. Allocated memory is still 109.1 MB. Free memory was 64.2 MB in the beginning and 63.7 MB in the end (delta: 460.0 kB). Peak memory consumption was 27.1 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_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/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_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/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_88aaeed4-6095-40a1-89bf-d59cd64bb738/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 f87ca444cebdd8343e0a486129ff23acad574c7cfb073abcacffd6c901ccf3af --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:28:56,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:28:56,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:28:56,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:28:56,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:28:56,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:28:56,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:28:56,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:28:56,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:28:56,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:28:56,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:28:56,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:28:56,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:28:56,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:28:56,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:28:56,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:28:56,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:28:56,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:28:56,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:28:56,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:28:56,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:28:56,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:28:56,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:28:56,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:28:56,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:28:56,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:28:56,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:28:56,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:28:56,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:28:56,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:28:56,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:28:56,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:28:56,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:28:56,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:28:56,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:28:56,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:28:56,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:28:56,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:28:56,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:28:56,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:28:56,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:28:56,933 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:28:56,988 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:28:56,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:28:56,990 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:28:56,991 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:28:56,991 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:28:56,991 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:28:56,992 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:28:56,992 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:28:56,992 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:28:56,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:28:56,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:28:56,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:28:56,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:28:56,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:28:56,997 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:28:56,997 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:28:56,997 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:28:56,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:28:56,998 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:28:56,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:28:56,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:28:56,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:28:56,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:28:56,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:28:56,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:28:57,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:28:57,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:28:57,000 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:28:57,000 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:28:57,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:28:57,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:28:57,001 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:28:57,001 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_88aaeed4-6095-40a1-89bf-d59cd64bb738/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f87ca444cebdd8343e0a486129ff23acad574c7cfb073abcacffd6c901ccf3af [2021-11-07 01:28:57,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:28:57,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:28:57,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:28:57,459 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:28:57,460 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:28:57,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i [2021-11-07 01:28:57,555 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/data/d240eec9f/6271e2cd2552453bb1d7f3c0699b2ba8/FLAGab98bae4c [2021-11-07 01:28:58,597 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:28:58,597 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i [2021-11-07 01:28:58,648 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/data/d240eec9f/6271e2cd2552453bb1d7f3c0699b2ba8/FLAGab98bae4c [2021-11-07 01:28:59,022 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/data/d240eec9f/6271e2cd2552453bb1d7f3c0699b2ba8 [2021-11-07 01:28:59,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:28:59,026 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:28:59,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:28:59,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:28:59,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:28:59,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:28:59" (1/1) ... [2021-11-07 01:28:59,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10f0f4a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:59, skipping insertion in model container [2021-11-07 01:28:59,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:28:59" (1/1) ... [2021-11-07 01:28:59,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:28:59,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:28:59,587 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_88aaeed4-6095-40a1-89bf-d59cd64bb738/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4498,4511] [2021-11-07 01:28:59,598 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4558,4571] [2021-11-07 01:28:59,632 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:28:59,648 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:29:00,692 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:00,693 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:00,693 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:00,695 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:00,696 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:00,716 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:00,717 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:00,732 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:00,733 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:01,259 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:29:01,261 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:29:01,262 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:29:01,264 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:29:01,266 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:29:01,267 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:29:01,268 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:29:01,269 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:29:01,270 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:29:01,271 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:29:01,508 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:29:01,731 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:01,732 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:01,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:02,011 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:29:02,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:29:02,133 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_88aaeed4-6095-40a1-89bf-d59cd64bb738/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4498,4511] [2021-11-07 01:29:02,134 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_88aaeed4-6095-40a1-89bf-d59cd64bb738/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4558,4571] [2021-11-07 01:29:02,137 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:29:02,138 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:29:02,201 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:02,202 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:02,202 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:02,203 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:02,204 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:02,220 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:02,222 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:02,223 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:02,224 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:02,310 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:29:02,311 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:29:02,311 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:29:02,313 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:29:02,314 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:29:02,315 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:29:02,323 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:29:02,323 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:29:02,324 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:29:02,325 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:29:02,373 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:29:02,500 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:02,501 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:02,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:02,617 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:29:02,648 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_88aaeed4-6095-40a1-89bf-d59cd64bb738/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4498,4511] [2021-11-07 01:29:02,649 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_88aaeed4-6095-40a1-89bf-d59cd64bb738/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4558,4571] [2021-11-07 01:29:02,667 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:29:02,668 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:29:02,765 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:02,765 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:02,766 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:02,766 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:02,766 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:02,778 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:02,780 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:02,782 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:02,783 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:02,835 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:29:02,836 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:29:02,837 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:29:02,838 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:29:02,839 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:29:02,839 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:29:02,840 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:29:02,841 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:29:02,842 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:29:02,843 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:29:02,881 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:29:03,039 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:03,039 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:03,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:03,359 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:29:03,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:03 WrapperNode [2021-11-07 01:29:03,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:03,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:29:03,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:29:03,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:29:03,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:03" (1/1) ... [2021-11-07 01:29:03,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:03" (1/1) ... [2021-11-07 01:29:03,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:29:03,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:29:03,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:29:03,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:29:03,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:03" (1/1) ... [2021-11-07 01:29:03,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:03" (1/1) ... [2021-11-07 01:29:03,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:03" (1/1) ... [2021-11-07 01:29:03,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:03" (1/1) ... [2021-11-07 01:29:03,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:03" (1/1) ... [2021-11-07 01:29:03,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:03" (1/1) ... [2021-11-07 01:29:03,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:03" (1/1) ... [2021-11-07 01:29:03,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:29:03,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:29:03,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:29:03,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:29:03,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:03" (1/1) ... [2021-11-07 01:29:03,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:29:03,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:29:03,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:29:03,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:29:03,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:29:03,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:29:03,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:29:03,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:29:03,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:29:03,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:29:03,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:29:03,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:29:03,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:29:03,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:29:03,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:29:03,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:29:03,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:29:03,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:29:20,099 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:29:20,099 INFO L299 CfgBuilder]: Removed 89 assume(true) statements. [2021-11-07 01:29:20,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:29:20 BoogieIcfgContainer [2021-11-07 01:29:20,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:29:20,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:29:20,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:29:20,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:29:20,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:28:59" (1/3) ... [2021-11-07 01:29:20,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713928a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:29:20, skipping insertion in model container [2021-11-07 01:29:20,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:03" (2/3) ... [2021-11-07 01:29:20,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713928a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:29:20, skipping insertion in model container [2021-11-07 01:29:20,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:29:20" (3/3) ... [2021-11-07 01:29:20,128 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_c_str_harness.i [2021-11-07 01:29:20,135 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:29:20,136 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-07 01:29:20,210 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:29:20,229 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 01:29:20,229 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-07 01:29:20,251 INFO L276 IsEmpty]: Start isEmpty. Operand has 139 states, 131 states have (on average 1.4732824427480915) internal successors, (193), 138 states have internal predecessors, (193), 0 states have call successors, (0), 0 states 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 01:29:20,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 01:29:20,261 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:20,262 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:20,263 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:29:20,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:20,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1563218279, now seen corresponding path program 1 times [2021-11-07 01:29:20,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:20,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462144609] [2021-11-07 01:29:20,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:20,299 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:20,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:20,303 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:20,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:29:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:25,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 1818 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:29:26,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:26,324 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 01:29:26,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:26,592 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:26,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462144609] [2021-11-07 01:29:26,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462144609] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:26,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:26,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:29:26,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500267924] [2021-11-07 01:29:26,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:29:26,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:26,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:29:26,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:29:26,621 INFO L87 Difference]: Start difference. First operand has 139 states, 131 states have (on average 1.4732824427480915) internal successors, (193), 138 states have internal predecessors, (193), 0 states have call successors, (0), 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 24.0) internal successors, (48), 2 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 01:29:26,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:26,654 INFO L93 Difference]: Finished difference Result 274 states and 381 transitions. [2021-11-07 01:29:26,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:29:26,656 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-07 01:29:26,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:26,667 INFO L225 Difference]: With dead ends: 274 [2021-11-07 01:29:26,667 INFO L226 Difference]: Without dead ends: 133 [2021-11-07 01:29:26,671 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 94 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 01:29:26,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-11-07 01:29:26,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-11-07 01:29:26,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 126 states have (on average 1.3015873015873016) internal successors, (164), 132 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 01:29:26,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 164 transitions. [2021-11-07 01:29:26,720 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 164 transitions. Word has length 48 [2021-11-07 01:29:26,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:26,721 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 164 transitions. [2021-11-07 01:29:26,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 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 01:29:26,721 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 164 transitions. [2021-11-07 01:29:26,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 01:29:26,724 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:26,724 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:26,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:26,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:29:26,926 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:29:26,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:26,927 INFO L85 PathProgramCache]: Analyzing trace with hash -499919455, now seen corresponding path program 1 times [2021-11-07 01:29:26,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:26,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80225677] [2021-11-07 01:29:26,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:26,933 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:26,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:26,935 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:26,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:29:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:32,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 1818 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:29:32,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:32,643 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 01:29:32,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:32,936 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 01:29:32,936 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:32,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80225677] [2021-11-07 01:29:32,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80225677] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:32,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:32,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:29:32,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532076081] [2021-11-07 01:29:32,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:29:32,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:32,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:29:32,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:29:32,940 INFO L87 Difference]: Start difference. First operand 133 states and 164 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 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 01:29:33,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:33,257 INFO L93 Difference]: Finished difference Result 236 states and 292 transitions. [2021-11-07 01:29:33,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:29:33,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-07 01:29:33,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:33,260 INFO L225 Difference]: With dead ends: 236 [2021-11-07 01:29:33,260 INFO L226 Difference]: Without dead ends: 133 [2021-11-07 01:29:33,262 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 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 01:29:33,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-11-07 01:29:33,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-11-07 01:29:33,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 126 states have (on average 1.2777777777777777) internal successors, (161), 132 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 01:29:33,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 161 transitions. [2021-11-07 01:29:33,278 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 161 transitions. Word has length 48 [2021-11-07 01:29:33,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:33,278 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 161 transitions. [2021-11-07 01:29:33,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 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 01:29:33,279 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 161 transitions. [2021-11-07 01:29:33,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 01:29:33,281 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:33,281 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:33,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 01:29:33,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:29:33,504 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:29:33,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:33,504 INFO L85 PathProgramCache]: Analyzing trace with hash 985948129, now seen corresponding path program 1 times [2021-11-07 01:29:33,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:33,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671587911] [2021-11-07 01:29:33,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:33,509 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:33,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:33,510 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:33,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:29:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:39,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 1826 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:29:39,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:39,663 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 01:29:39,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:40,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:40,070 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:40,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671587911] [2021-11-07 01:29:40,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671587911] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:40,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:40,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:29:40,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376711699] [2021-11-07 01:29:40,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:29:40,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:40,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:29:40,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:29:40,074 INFO L87 Difference]: Start difference. First operand 133 states and 161 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:40,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:40,464 INFO L93 Difference]: Finished difference Result 186 states and 222 transitions. [2021-11-07 01:29:40,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:29:40,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-07 01:29:40,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:40,467 INFO L225 Difference]: With dead ends: 186 [2021-11-07 01:29:40,467 INFO L226 Difference]: Without dead ends: 133 [2021-11-07 01:29:40,468 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:29:40,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-11-07 01:29:40,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-11-07 01:29:40,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 126 states have (on average 1.2698412698412698) internal successors, (160), 132 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 01:29:40,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 160 transitions. [2021-11-07 01:29:40,481 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 160 transitions. Word has length 52 [2021-11-07 01:29:40,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:40,482 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 160 transitions. [2021-11-07 01:29:40,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:40,483 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 160 transitions. [2021-11-07 01:29:40,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 01:29:40,485 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:40,486 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:40,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-07 01:29:40,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:29:40,696 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:29:40,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:40,697 INFO L85 PathProgramCache]: Analyzing trace with hash 912109596, now seen corresponding path program 1 times [2021-11-07 01:29:40,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:40,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958745920] [2021-11-07 01:29:40,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:40,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:40,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:40,702 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:40,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:29:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:46,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 1830 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-07 01:29:46,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:47,768 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 01:29:47,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:00,540 WARN L207 SmtUtils]: Spent 11.02 s on a formula simplification. DAG size of input: 523 DAG size of output: 269 [2021-11-07 01:30:00,550 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-07 01:30:00,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 128 treesize of output 771 [2021-11-07 01:41:43,511 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 01:41:43,511 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:43,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958745920] [2021-11-07 01:41:43,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958745920] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:43,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:43,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 19 [2021-11-07 01:41:43,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219067403] [2021-11-07 01:41:43,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 01:41:43,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:41:43,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 01:41:43,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:41:43,516 INFO L87 Difference]: Start difference. First operand 133 states and 160 transitions. Second operand has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:42:07,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:42:07,967 INFO L93 Difference]: Finished difference Result 457 states and 546 transitions. [2021-11-07 01:42:07,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-07 01:42:07,972 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-07 01:42:07,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:42:07,977 INFO L225 Difference]: With dead ends: 457 [2021-11-07 01:42:07,977 INFO L226 Difference]: Without dead ends: 372 [2021-11-07 01:42:07,982 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=788, Invalid=3118, Unknown=0, NotChecked=0, Total=3906 [2021-11-07 01:42:07,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-11-07 01:42:08,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 223. [2021-11-07 01:42:08,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 216 states have (on average 1.25) internal successors, (270), 222 states have internal predecessors, (270), 0 states have call successors, (0), 0 states 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 01:42:08,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 270 transitions. [2021-11-07 01:42:08,037 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 270 transitions. Word has length 54 [2021-11-07 01:42:08,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:42:08,038 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 270 transitions. [2021-11-07 01:42:08,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:42:08,039 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 270 transitions. [2021-11-07 01:42:08,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 01:42:08,044 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:42:08,044 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:42:08,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:42:08,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:42:08,247 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:42:08,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:42:08,248 INFO L85 PathProgramCache]: Analyzing trace with hash 2033036321, now seen corresponding path program 1 times [2021-11-07 01:42:08,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:42:08,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594055266] [2021-11-07 01:42:08,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:42:08,252 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:42:08,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:42:08,255 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:42:08,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88aaeed4-6095-40a1-89bf-d59cd64bb738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:42:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:42:14,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 1837 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-07 01:42:14,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:16,769 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:42:16,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 162 treesize of output 66 [2021-11-07 01:42:16,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:42:16,873 INFO L328 TraceCheckSpWp]: Computing backward predicates...