./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_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_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/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_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/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_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/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 9e4ccc391c063e90fb229c8b3638d2f1089d6ba2ff288522cf06bf650b1be9e5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:53:12,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:53:12,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:53:12,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:53:12,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:53:12,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:53:12,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:53:12,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:53:12,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:53:12,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:53:12,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:53:12,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:53:12,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:53:12,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:53:12,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:53:12,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:53:12,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:53:12,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:53:12,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:53:12,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:53:12,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:53:12,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:53:12,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:53:12,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:53:12,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:53:12,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:53:12,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:53:12,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:53:12,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:53:12,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:53:12,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:53:12,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:53:12,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:53:12,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:53:12,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:53:12,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:53:12,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:53:12,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:53:12,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:53:12,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:53:12,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:53:12,226 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:53:12,274 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:53:12,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:53:12,276 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:53:12,277 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:53:12,277 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:53:12,277 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:53:12,277 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:53:12,278 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:53:12,280 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:53:12,280 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:53:12,280 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:53:12,281 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:53:12,281 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:53:12,281 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:53:12,281 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:53:12,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:53:12,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:53:12,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:53:12,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:53:12,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:53:12,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:53:12,283 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:53:12,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:53:12,283 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:53:12,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:53:12,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:53:12,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:53:12,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:53:12,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:53:12,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:53:12,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:53:12,285 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:53:12,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:53:12,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:53:12,286 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:53:12,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:53:12,286 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_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e4ccc391c063e90fb229c8b3638d2f1089d6ba2ff288522cf06bf650b1be9e5 [2021-11-07 01:53:12,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:53:12,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:53:12,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:53:12,664 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:53:12,665 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:53:12,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i [2021-11-07 01:53:12,751 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/data/4a8e41afe/84daadbf303b4b06be6e4d757a774a28/FLAG272597f0c [2021-11-07 01:53:13,591 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:53:13,592 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i [2021-11-07 01:53:13,641 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/data/4a8e41afe/84daadbf303b4b06be6e4d757a774a28/FLAG272597f0c [2021-11-07 01:53:14,086 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/data/4a8e41afe/84daadbf303b4b06be6e4d757a774a28 [2021-11-07 01:53:14,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:53:14,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:53:14,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:53:14,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:53:14,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:53:14,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:53:14" (1/1) ... [2021-11-07 01:53:14,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67a0f2c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:53:14, skipping insertion in model container [2021-11-07 01:53:14,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:53:14" (1/1) ... [2021-11-07 01:53:14,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:53:14,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:53:14,538 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_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4495,4508] [2021-11-07 01:53:14,546 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_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4555,4568] [2021-11-07 01:53:14,572 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:53:14,578 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:53:15,597 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:15,598 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:15,599 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:15,600 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:15,602 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:15,617 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:15,618 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:15,620 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:15,621 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:16,058 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:53:16,059 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:53:16,061 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:53:16,062 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:53:16,064 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:53:16,065 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:53:16,066 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:53:16,067 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:53:16,068 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:53:16,069 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:53:16,265 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:53:16,392 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:16,397 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:16,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:53:16,630 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 01:53:16,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@73ea58c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:53:16, skipping insertion in model container [2021-11-07 01:53:16,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:53:16,634 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:53:16,637 INFO L168 Benchmark]: Toolchain (without parser) took 2544.36 ms. Allocated memory was 113.2 MB in the beginning and 138.4 MB in the end (delta: 25.2 MB). Free memory was 71.9 MB in the beginning and 99.5 MB in the end (delta: -27.7 MB). Peak memory consumption was 39.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:53:16,638 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 77.6 MB. Free memory was 34.7 MB in the beginning and 34.6 MB in the end (delta: 63.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:53:16,640 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2541.36 ms. Allocated memory was 113.2 MB in the beginning and 138.4 MB in the end (delta: 25.2 MB). Free memory was 71.9 MB in the beginning and 99.5 MB in the end (delta: -27.7 MB). Peak memory consumption was 39.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:53:16,643 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 77.6 MB. Free memory was 34.7 MB in the beginning and 34.6 MB in the end (delta: 63.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2541.36 ms. Allocated memory was 113.2 MB in the beginning and 138.4 MB in the end (delta: 25.2 MB). Free memory was 71.9 MB in the beginning and 99.5 MB in the end (delta: -27.7 MB). Peak memory consumption was 39.9 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_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/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_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/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_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/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 9e4ccc391c063e90fb229c8b3638d2f1089d6ba2ff288522cf06bf650b1be9e5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:53:18,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:53:18,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:53:19,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:53:19,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:53:19,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:53:19,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:53:19,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:53:19,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:53:19,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:53:19,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:53:19,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:53:19,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:53:19,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:53:19,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:53:19,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:53:19,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:53:19,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:53:19,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:53:19,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:53:19,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:53:19,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:53:19,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:53:19,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:53:19,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:53:19,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:53:19,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:53:19,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:53:19,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:53:19,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:53:19,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:53:19,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:53:19,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:53:19,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:53:19,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:53:19,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:53:19,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:53:19,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:53:19,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:53:19,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:53:19,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:53:19,102 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:53:19,152 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:53:19,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:53:19,154 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:53:19,154 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:53:19,154 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:53:19,155 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:53:19,155 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:53:19,155 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:53:19,155 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:53:19,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:53:19,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:53:19,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:53:19,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:53:19,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:53:19,158 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:53:19,158 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:53:19,158 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:53:19,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:53:19,158 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:53:19,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:53:19,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:53:19,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:53:19,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:53:19,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:53:19,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:53:19,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:53:19,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:53:19,160 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:53:19,160 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:53:19,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:53:19,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:53:19,160 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:53:19,160 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_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e4ccc391c063e90fb229c8b3638d2f1089d6ba2ff288522cf06bf650b1be9e5 [2021-11-07 01:53:19,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:53:19,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:53:19,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:53:19,585 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:53:19,586 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:53:19,587 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i [2021-11-07 01:53:19,665 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/data/0b2f20768/748dd783c6794c3a81bdd6cc96bf06b7/FLAG91f9cfedf [2021-11-07 01:53:20,570 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:53:20,571 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i [2021-11-07 01:53:20,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/data/0b2f20768/748dd783c6794c3a81bdd6cc96bf06b7/FLAG91f9cfedf [2021-11-07 01:53:21,051 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/data/0b2f20768/748dd783c6794c3a81bdd6cc96bf06b7 [2021-11-07 01:53:21,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:53:21,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:53:21,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:53:21,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:53:21,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:53:21,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:53:21" (1/1) ... [2021-11-07 01:53:21,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@635472dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:53:21, skipping insertion in model container [2021-11-07 01:53:21,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:53:21" (1/1) ... [2021-11-07 01:53:21,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:53:21,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:53:21,553 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_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4495,4508] [2021-11-07 01:53:21,565 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_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4555,4568] [2021-11-07 01:53:21,596 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:53:21,610 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:53:22,932 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:22,933 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:22,934 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:22,939 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:22,940 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:22,968 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:22,969 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:22,971 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:22,972 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:23,507 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:53:23,509 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:53:23,510 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:53:23,511 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:53:23,513 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:53:23,513 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:53:23,514 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:53:23,515 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:53:23,516 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:53:23,516 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:53:23,706 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:53:23,863 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:23,864 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:23,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:53:24,062 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:53:24,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:53:24,132 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_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4495,4508] [2021-11-07 01:53:24,133 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_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4555,4568] [2021-11-07 01:53:24,135 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:53:24,136 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:53:24,188 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:24,189 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:24,189 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:24,189 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:24,190 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:24,201 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:24,202 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:24,203 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:24,204 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:24,269 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:53:24,270 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:53:24,271 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:53:24,272 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:53:24,273 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:53:24,274 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:53:24,278 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:53:24,278 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:53:24,279 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:53:24,279 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:53:24,316 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:53:24,384 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:24,385 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:24,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:53:24,475 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:53:24,500 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_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4495,4508] [2021-11-07 01:53:24,501 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_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4555,4568] [2021-11-07 01:53:24,502 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:53:24,503 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:53:24,543 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:24,544 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:24,544 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:24,545 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:24,545 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:24,551 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:24,551 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:24,552 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:24,552 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:24,610 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:53:24,611 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:53:24,611 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:53:24,612 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:53:24,613 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:53:24,613 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:53:24,614 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:53:24,614 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:53:24,615 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:53:24,616 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:53:24,642 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:53:24,724 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:24,724 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:53:24,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:53:25,214 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:53:25,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:53:25 WrapperNode [2021-11-07 01:53:25,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:53:25,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:53:25,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:53:25,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:53:25,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:53:25" (1/1) ... [2021-11-07 01:53:25,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:53:25" (1/1) ... [2021-11-07 01:53:25,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:53:25,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:53:25,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:53:25,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:53:25,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:53:25" (1/1) ... [2021-11-07 01:53:25,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:53:25" (1/1) ... [2021-11-07 01:53:25,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:53:25" (1/1) ... [2021-11-07 01:53:25,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:53:25" (1/1) ... [2021-11-07 01:53:25,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:53:25" (1/1) ... [2021-11-07 01:53:25,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:53:25" (1/1) ... [2021-11-07 01:53:25,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:53:25" (1/1) ... [2021-11-07 01:53:25,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:53:25,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:53:25,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:53:25,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:53:25,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:53:25" (1/1) ... [2021-11-07 01:53:25,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:53:25,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:53:25,701 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:53:25,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:53:25,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:53:25,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:53:25,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:53:25,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:53:25,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:53:25,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:53:25,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:53:25,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:53:25,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:53:25,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:53:25,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:53:25,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:53:25,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:53:25,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:53:25,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:53:41,107 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:53:41,108 INFO L299 CfgBuilder]: Removed 101 assume(true) statements. [2021-11-07 01:53:41,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:53:41 BoogieIcfgContainer [2021-11-07 01:53:41,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:53:41,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:53:41,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:53:41,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:53:41,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:53:21" (1/3) ... [2021-11-07 01:53:41,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ed08f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:53:41, skipping insertion in model container [2021-11-07 01:53:41,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:53:25" (2/3) ... [2021-11-07 01:53:41,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ed08f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:53:41, skipping insertion in model container [2021-11-07 01:53:41,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:53:41" (3/3) ... [2021-11-07 01:53:41,118 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_c_str_harness.i [2021-11-07 01:53:41,124 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:53:41,124 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-07 01:53:41,172 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:53:41,177 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 01:53:41,177 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-07 01:53:41,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 173 states, 161 states have (on average 1.4906832298136645) internal successors, (240), 172 states have internal predecessors, (240), 0 states have call successors, (0), 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 01:53:41,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 01:53:41,203 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:53:41,203 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] [2021-11-07 01:53:41,204 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 01:53:41,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:53:41,209 INFO L85 PathProgramCache]: Analyzing trace with hash -27449226, now seen corresponding path program 1 times [2021-11-07 01:53:41,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:53:41,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167371640] [2021-11-07 01:53:41,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:53:41,231 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:53:41,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:53:41,234 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:53:41,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:53:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:53:45,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:53:45,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:53:45,874 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 01:53:45,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:53:46,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:53:46,080 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:53:46,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167371640] [2021-11-07 01:53:46,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167371640] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:53:46,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:53:46,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:53:46,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068153730] [2021-11-07 01:53:46,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:53:46,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:53:46,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:53:46,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:53:46,114 INFO L87 Difference]: Start difference. First operand has 173 states, 161 states have (on average 1.4906832298136645) internal successors, (240), 172 states have internal predecessors, (240), 0 states have call successors, (0), 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 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 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 01:53:46,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:53:46,167 INFO L93 Difference]: Finished difference Result 342 states and 475 transitions. [2021-11-07 01:53:46,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:53:46,169 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-07 01:53:46,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:53:46,183 INFO L225 Difference]: With dead ends: 342 [2021-11-07 01:53:46,183 INFO L226 Difference]: Without dead ends: 167 [2021-11-07 01:53:46,192 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 100 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 01:53:46,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-07 01:53:46,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2021-11-07 01:53:46,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 156 states have (on average 1.3269230769230769) internal successors, (207), 166 states have internal predecessors, (207), 0 states have call successors, (0), 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 01:53:46,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 207 transitions. [2021-11-07 01:53:46,242 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 207 transitions. Word has length 51 [2021-11-07 01:53:46,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:53:46,243 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 207 transitions. [2021-11-07 01:53:46,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 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 01:53:46,248 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 207 transitions. [2021-11-07 01:53:46,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 01:53:46,251 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:53:46,251 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:53:46,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:53:46,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:53:46,471 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 01:53:46,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:53:46,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1139044352, now seen corresponding path program 1 times [2021-11-07 01:53:46,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:53:46,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313219713] [2021-11-07 01:53:46,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:53:46,512 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:53:46,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:53:46,526 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:53:46,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:53:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:53:50,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:53:50,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:53:51,269 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 01:53:51,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:53:51,538 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 01:53:51,538 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:53:51,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313219713] [2021-11-07 01:53:51,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313219713] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:53:51,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:53:51,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:53:51,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295689819] [2021-11-07 01:53:51,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:53:51,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:53:51,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:53:51,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:53:51,545 INFO L87 Difference]: Start difference. First operand 167 states and 207 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 01:53:51,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:53:51,837 INFO L93 Difference]: Finished difference Result 299 states and 371 transitions. [2021-11-07 01:53:51,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:53:51,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-07 01:53:51,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:53:51,841 INFO L225 Difference]: With dead ends: 299 [2021-11-07 01:53:51,841 INFO L226 Difference]: Without dead ends: 167 [2021-11-07 01:53:51,843 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 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 01:53:51,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-07 01:53:51,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2021-11-07 01:53:51,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 156 states have (on average 1.3076923076923077) internal successors, (204), 166 states have internal predecessors, (204), 0 states have call successors, (0), 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 01:53:51,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 204 transitions. [2021-11-07 01:53:51,867 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 204 transitions. Word has length 51 [2021-11-07 01:53:51,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:53:51,868 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 204 transitions. [2021-11-07 01:53:51,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 01:53:51,868 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 204 transitions. [2021-11-07 01:53:51,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:53:51,873 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:53:51,873 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:53:51,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:53:52,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:53:52,087 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 01:53:52,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:53:52,087 INFO L85 PathProgramCache]: Analyzing trace with hash 692264448, now seen corresponding path program 1 times [2021-11-07 01:53:52,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:53:52,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518377282] [2021-11-07 01:53:52,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:53:52,095 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:53:52,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:53:52,096 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:53:52,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:53:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:53:56,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 01:53:56,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:53:56,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-07 01:53:57,346 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 01:53:57,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:53:57,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-07 01:53:57,933 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 01:53:57,933 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:53:57,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518377282] [2021-11-07 01:53:57,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518377282] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:53:57,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:53:57,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 13 [2021-11-07 01:53:57,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139579930] [2021-11-07 01:53:57,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:53:57,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:53:57,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:53:57,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:53:57,936 INFO L87 Difference]: Start difference. First operand 167 states and 204 transitions. Second operand has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:04,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:54:04,883 INFO L93 Difference]: Finished difference Result 462 states and 574 transitions. [2021-11-07 01:54:04,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:54:04,885 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:54:04,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:54:04,899 INFO L225 Difference]: With dead ends: 462 [2021-11-07 01:54:04,899 INFO L226 Difference]: Without dead ends: 329 [2021-11-07 01:54:04,901 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:54:04,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-11-07 01:54:04,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 244. [2021-11-07 01:54:04,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 233 states have (on average 1.3133047210300428) internal successors, (306), 243 states have internal predecessors, (306), 0 states have call successors, (0), 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 01:54:04,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 306 transitions. [2021-11-07 01:54:04,938 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 306 transitions. Word has length 63 [2021-11-07 01:54:04,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:54:04,941 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 306 transitions. [2021-11-07 01:54:04,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:04,943 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 306 transitions. [2021-11-07 01:54:04,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 01:54:04,950 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:54:04,951 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:54:05,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:54:05,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:54:05,152 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 01:54:05,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:54:05,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1525799419, now seen corresponding path program 1 times [2021-11-07 01:54:05,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:54:05,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709375565] [2021-11-07 01:54:05,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:54:05,156 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:54:05,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:54:05,157 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:54:05,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:54:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:54:09,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 1921 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:54:09,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:54:09,945 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 01:54:09,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 203 treesize of output 59 [2021-11-07 01:54:10,188 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 01:54:10,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:54:10,681 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 01:54:10,681 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:54:10,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709375565] [2021-11-07 01:54:10,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709375565] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:54:10,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:54:10,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-07 01:54:10,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489136523] [2021-11-07 01:54:10,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:54:10,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:54:10,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:54:10,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:54:10,684 INFO L87 Difference]: Start difference. First operand 244 states and 306 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:21,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:54:21,575 INFO L93 Difference]: Finished difference Result 710 states and 892 transitions. [2021-11-07 01:54:21,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:54:21,578 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 01:54:21,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:54:21,581 INFO L225 Difference]: With dead ends: 710 [2021-11-07 01:54:21,581 INFO L226 Difference]: Without dead ends: 495 [2021-11-07 01:54:21,582 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:54:21,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-11-07 01:54:21,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 284. [2021-11-07 01:54:21,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 273 states have (on average 1.3076923076923077) internal successors, (357), 283 states have internal predecessors, (357), 0 states have call successors, (0), 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 01:54:21,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 357 transitions. [2021-11-07 01:54:21,604 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 357 transitions. Word has length 70 [2021-11-07 01:54:21,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:54:21,604 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 357 transitions. [2021-11-07 01:54:21,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:21,605 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 357 transitions. [2021-11-07 01:54:21,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 01:54:21,606 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:54:21,607 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:54:21,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:54:21,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:54:21,822 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 01:54:21,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:54:21,823 INFO L85 PathProgramCache]: Analyzing trace with hash 628406141, now seen corresponding path program 1 times [2021-11-07 01:54:21,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:54:21,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501219488] [2021-11-07 01:54:21,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:54:21,827 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:54:21,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:54:21,827 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:54:21,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:54:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:54:26,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 1918 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:54:26,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:54:26,485 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 01:54:26,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 203 treesize of output 59 [2021-11-07 01:54:26,975 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 01:54:26,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:54:27,519 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 01:54:27,520 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:54:27,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501219488] [2021-11-07 01:54:27,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501219488] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:54:27,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:54:27,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 11 [2021-11-07 01:54:27,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271726327] [2021-11-07 01:54:27,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:54:27,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:54:27,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:54:27,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:54:27,522 INFO L87 Difference]: Start difference. First operand 284 states and 357 transitions. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:37,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:54:37,534 INFO L93 Difference]: Finished difference Result 875 states and 1066 transitions. [2021-11-07 01:54:37,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 01:54:37,537 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 01:54:37,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:54:37,542 INFO L225 Difference]: With dead ends: 875 [2021-11-07 01:54:37,542 INFO L226 Difference]: Without dead ends: 563 [2021-11-07 01:54:37,543 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:54:37,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-11-07 01:54:37,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 277. [2021-11-07 01:54:37,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 266 states have (on average 1.2706766917293233) internal successors, (338), 276 states have internal predecessors, (338), 0 states have call successors, (0), 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 01:54:37,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 338 transitions. [2021-11-07 01:54:37,561 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 338 transitions. Word has length 70 [2021-11-07 01:54:37,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:54:37,561 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 338 transitions. [2021-11-07 01:54:37,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:37,562 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 338 transitions. [2021-11-07 01:54:37,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 01:54:37,563 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:54:37,563 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:54:37,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-07 01:54:37,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:54:37,778 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 01:54:37,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:54:37,779 INFO L85 PathProgramCache]: Analyzing trace with hash 19949906, now seen corresponding path program 1 times [2021-11-07 01:54:37,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:54:37,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830319143] [2021-11-07 01:54:37,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:54:37,782 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:54:37,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:54:37,783 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:54:37,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:54:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:54:42,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:54:42,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:54:42,300 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 01:54:42,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:54:42,581 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 01:54:42,581 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:54:42,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830319143] [2021-11-07 01:54:42,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830319143] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:54:42,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:54:42,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:54:42,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338846996] [2021-11-07 01:54:42,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:54:42,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:54:42,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:54:42,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:54:42,583 INFO L87 Difference]: Start difference. First operand 277 states and 338 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:42,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:54:42,843 INFO L93 Difference]: Finished difference Result 557 states and 673 transitions. [2021-11-07 01:54:42,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:54:42,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-07 01:54:42,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:54:42,848 INFO L225 Difference]: With dead ends: 557 [2021-11-07 01:54:42,849 INFO L226 Difference]: Without dead ends: 306 [2021-11-07 01:54:42,849 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 140 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 01:54:42,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-11-07 01:54:42,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 267. [2021-11-07 01:54:42,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 256 states have (on average 1.23828125) internal successors, (317), 266 states have internal predecessors, (317), 0 states have call successors, (0), 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 01:54:42,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 317 transitions. [2021-11-07 01:54:42,866 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 317 transitions. Word has length 72 [2021-11-07 01:54:42,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:54:42,867 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 317 transitions. [2021-11-07 01:54:42,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:42,868 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 317 transitions. [2021-11-07 01:54:42,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 01:54:42,870 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:54:42,870 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:54:42,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:54:43,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:54:43,087 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 01:54:43,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:54:43,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1959111952, now seen corresponding path program 1 times [2021-11-07 01:54:43,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:54:43,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139564258] [2021-11-07 01:54:43,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:54:43,090 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:54:43,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:54:43,091 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:54:43,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d7dad6f-0ac7-4ef6-8d80-f17c38523340/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:54:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:54:47,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 1923 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-07 01:54:47,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:54:47,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-07 01:54:48,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 107 [2021-11-07 01:54:48,731 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:54:48,731 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 104 treesize of output 40 [2021-11-07 01:54:49,012 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 01:54:49,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:55:08,572 WARN L207 SmtUtils]: Spent 16.67 s on a formula simplification. DAG size of input: 523 DAG size of output: 299 [2021-11-07 01:55:08,579 INFO L354 Elim1Store]: treesize reduction 756, result has 51.9 percent of original size [2021-11-07 01:55:08,579 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 138 treesize of output 862