./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs --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 704abadf4a8c9a8af61418181b8ae91b3e3da2fe96f0fde7751e748b781a863c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:14:37,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:14:37,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:14:37,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:14:37,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:14:37,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:14:37,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:14:37,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:14:37,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:14:37,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:14:37,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:14:37,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:14:37,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:14:37,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:14:37,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:14:37,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:14:37,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:14:37,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:14:37,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:14:37,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:14:37,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:14:37,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:14:37,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:14:37,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:14:37,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:14:37,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:14:37,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:14:37,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:14:37,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:14:37,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:14:37,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:14:37,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:14:37,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:14:37,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:14:37,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:14:37,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:14:37,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:14:37,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:14:37,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:14:37,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:14:37,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:14:37,207 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:14:37,252 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:14:37,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:14:37,253 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:14:37,254 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:14:37,254 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:14:37,254 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:14:37,254 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:14:37,254 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:14:37,255 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:14:37,255 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:14:37,256 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:14:37,256 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:14:37,256 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:14:37,257 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:14:37,257 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:14:37,257 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:14:37,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:14:37,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:14:37,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:14:37,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:14:37,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:14:37,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:14:37,259 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:14:37,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:14:37,259 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:14:37,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:14:37,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:14:37,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:14:37,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:37,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:14:37,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:14:37,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:14:37,263 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:14:37,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:14:37,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:14:37,263 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:14:37,264 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:14:37,264 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_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 704abadf4a8c9a8af61418181b8ae91b3e3da2fe96f0fde7751e748b781a863c [2021-11-19 14:14:37,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:14:37,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:14:37,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:14:37,619 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:14:37,620 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:14:37,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i [2021-11-19 14:14:37,728 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/data/76bbfcc14/69fe154f090d476bb002c8343d838ace/FLAG06d5dc3e1 [2021-11-19 14:14:38,537 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:14:38,538 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i [2021-11-19 14:14:38,608 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/data/76bbfcc14/69fe154f090d476bb002c8343d838ace/FLAG06d5dc3e1 [2021-11-19 14:14:39,046 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/data/76bbfcc14/69fe154f090d476bb002c8343d838ace [2021-11-19 14:14:39,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:14:39,051 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:14:39,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:39,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:14:39,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:14:39,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:39" (1/1) ... [2021-11-19 14:14:39,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63dab9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:39, skipping insertion in model container [2021-11-19 14:14:39,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:39" (1/1) ... [2021-11-19 14:14:39,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:14:39,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:14:39,550 WARN L230 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_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4500,4513] [2021-11-19 14:14:39,557 WARN L230 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_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4560,4573] [2021-11-19 14:14:39,585 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:14:39,592 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:14:40,665 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:40,670 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:40,671 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:40,672 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:40,674 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:40,701 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:40,707 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:40,714 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:40,714 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:41,201 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:14:41,202 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:14:41,204 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:14:41,205 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:14:41,207 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:14:41,208 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:14:41,208 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:14:41,209 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:14:41,210 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:14:41,211 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:14:41,420 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:14:41,531 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:41,531 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:41,642 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:41,718 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) [2021-11-19 14:14:41,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4ef59b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:41, skipping insertion in model container [2021-11-19 14:14:41,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:41,721 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:14:41,724 INFO L158 Benchmark]: Toolchain (without parser) took 2671.32ms. Allocated memory is still 136.3MB. Free memory was 93.3MB in the beginning and 59.6MB in the end (delta: 33.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2021-11-19 14:14:41,724 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 83.9MB. Free memory was 54.8MB in the beginning and 54.8MB in the end (delta: 28.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:14:41,725 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2667.98ms. Allocated memory is still 136.3MB. Free memory was 93.2MB in the beginning and 59.6MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2021-11-19 14:14:41,727 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 83.9MB. Free memory was 54.8MB in the beginning and 54.8MB in the end (delta: 28.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2667.98ms. Allocated memory is still 136.3MB. Free memory was 93.2MB in the beginning and 59.6MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * 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_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs --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 704abadf4a8c9a8af61418181b8ae91b3e3da2fe96f0fde7751e748b781a863c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:14:44,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:14:44,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:14:44,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:14:44,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:14:44,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:14:44,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:14:44,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:14:44,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:14:44,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:14:44,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:14:44,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:14:44,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:14:44,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:14:44,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:14:44,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:14:44,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:14:44,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:14:44,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:14:44,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:14:44,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:14:44,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:14:44,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:14:44,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:14:44,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:14:44,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:14:44,406 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:14:44,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:14:44,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:14:44,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:14:44,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:14:44,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:14:44,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:14:44,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:14:44,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:14:44,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:14:44,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:14:44,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:14:44,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:14:44,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:14:44,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:14:44,424 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:14:44,479 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:14:44,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:14:44,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:14:44,481 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:14:44,481 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:14:44,482 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:14:44,482 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:14:44,482 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:14:44,482 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:14:44,483 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:14:44,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:14:44,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:14:44,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:14:44,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:14:44,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:14:44,487 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:14:44,487 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:14:44,487 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:14:44,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:14:44,488 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:14:44,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:14:44,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:14:44,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:14:44,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:14:44,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:44,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:14:44,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:14:44,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:14:44,490 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:14:44,490 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:14:44,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:14:44,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:14:44,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:14:44,491 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_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 704abadf4a8c9a8af61418181b8ae91b3e3da2fe96f0fde7751e748b781a863c [2021-11-19 14:14:45,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:14:45,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:14:45,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:14:45,049 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:14:45,050 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:14:45,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i [2021-11-19 14:14:45,164 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/data/203b9dbda/3bb3fab2bfe145fdaacb020951ea4fe6/FLAGee62bc32f [2021-11-19 14:14:46,329 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:14:46,330 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i [2021-11-19 14:14:46,381 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/data/203b9dbda/3bb3fab2bfe145fdaacb020951ea4fe6/FLAGee62bc32f [2021-11-19 14:14:46,689 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/data/203b9dbda/3bb3fab2bfe145fdaacb020951ea4fe6 [2021-11-19 14:14:46,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:14:46,698 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:14:46,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:46,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:14:46,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:14:46,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:46" (1/1) ... [2021-11-19 14:14:46,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bd4bd15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:46, skipping insertion in model container [2021-11-19 14:14:46,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:46" (1/1) ... [2021-11-19 14:14:46,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:14:46,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:14:47,282 WARN L230 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_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4500,4513] [2021-11-19 14:14:47,293 WARN L230 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_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4560,4573] [2021-11-19 14:14:47,335 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:14:47,345 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:14:48,544 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:48,545 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:48,546 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:48,547 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:48,549 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:48,567 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:48,569 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:48,571 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:48,572 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:49,146 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:14:49,148 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:14:49,149 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:14:49,151 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:14:49,153 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:14:49,154 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:14:49,155 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:14:49,155 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:14:49,156 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:14:49,157 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:14:49,352 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:14:49,518 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:49,536 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:49,627 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:49,723 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:14:49,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:14:49,774 WARN L230 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_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4500,4513] [2021-11-19 14:14:49,775 WARN L230 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_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4560,4573] [2021-11-19 14:14:49,777 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:14:49,778 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:14:49,836 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:49,837 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:49,838 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:49,838 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:49,839 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:49,849 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:49,850 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:49,851 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:49,852 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:49,923 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:14:49,924 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:14:49,926 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:14:49,930 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:14:49,932 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:14:49,933 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:14:49,936 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:14:49,937 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:14:49,938 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:14:49,939 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:14:49,976 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:14:50,049 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:50,050 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:50,135 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:50,204 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:14:50,234 WARN L230 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_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4500,4513] [2021-11-19 14:14:50,245 WARN L230 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_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4560,4573] [2021-11-19 14:14:50,247 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:14:50,248 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:14:50,309 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:50,310 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:50,310 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:50,312 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:50,313 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:50,321 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:50,322 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:50,323 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:50,323 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:50,366 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:14:50,367 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:14:50,367 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:14:50,371 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:14:50,372 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:14:50,373 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:14:50,374 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:14:50,375 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:14:50,409 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:14:50,410 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:14:50,440 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:14:50,532 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:50,534 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:50,572 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:51,081 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:14:51,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:51 WrapperNode [2021-11-19 14:14:51,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:51,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:14:51,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:14:51,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:14:51,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:51" (1/1) ... [2021-11-19 14:14:51,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:51" (1/1) ... [2021-11-19 14:14:51,398 INFO L137 Inliner]: procedures = 712, calls = 2611, calls flagged for inlining = 59, calls inlined = 5, statements flattened = 774 [2021-11-19 14:14:51,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:14:51,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:14:51,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:14:51,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:14:51,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:51" (1/1) ... [2021-11-19 14:14:51,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:51" (1/1) ... [2021-11-19 14:14:51,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:51" (1/1) ... [2021-11-19 14:14:51,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:51" (1/1) ... [2021-11-19 14:14:51,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:51" (1/1) ... [2021-11-19 14:14:51,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:51" (1/1) ... [2021-11-19 14:14:51,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:51" (1/1) ... [2021-11-19 14:14:51,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:14:51,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:14:51,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:14:51,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:14:51,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:51" (1/1) ... [2021-11-19 14:14:51,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:51,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:14:51,615 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:14:51,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:14:51,668 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-19 14:14:51,668 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-19 14:14:51,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:14:51,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:14:51,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:14:51,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:14:51,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:14:51,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:14:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:14:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:14:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:14:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:14:51,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:14:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 14:14:51,672 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 14:14:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:14:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:14:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:14:51,672 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:14:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:14:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:14:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:14:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:14:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 14:14:51,673 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 14:14:51,959 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:14:51,961 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:14:55,615 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:14:55,622 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:14:55,622 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 14:14:55,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:14:55 BoogieIcfgContainer [2021-11-19 14:14:55,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:14:55,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:14:55,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:14:55,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:14:55,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:14:46" (1/3) ... [2021-11-19 14:14:55,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2763a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:14:55, skipping insertion in model container [2021-11-19 14:14:55,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:51" (2/3) ... [2021-11-19 14:14:55,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2763a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:14:55, skipping insertion in model container [2021-11-19 14:14:55,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:14:55" (3/3) ... [2021-11-19 14:14:55,632 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_from_array_harness.i [2021-11-19 14:14:55,638 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:14:55,638 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:14:55,686 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:14:55,692 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 [2021-11-19 14:14:55,693 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:14:55,710 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 43 states have internal predecessors, (52), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-19 14:14:55,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 14:14:55,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:55,717 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:14:55,718 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:55,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:55,727 INFO L85 PathProgramCache]: Analyzing trace with hash -860547149, now seen corresponding path program 1 times [2021-11-19 14:14:55,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:55,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194676399] [2021-11-19 14:14:55,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:55,745 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:55,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:55,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:55,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:14:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:56,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 1331 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:14:56,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:56,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:14:56,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:57,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:14:57,071 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:57,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194676399] [2021-11-19 14:14:57,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194676399] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:14:57,072 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:14:57,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:14:57,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484077423] [2021-11-19 14:14:57,075 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:57,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:14:57,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:57,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:14:57,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:14:57,116 INFO L87 Difference]: Start difference. First operand has 61 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 43 states have internal predecessors, (52), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 14:14:57,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:57,150 INFO L93 Difference]: Finished difference Result 117 states and 154 transitions. [2021-11-19 14:14:57,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:14:57,153 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 29 [2021-11-19 14:14:57,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:57,164 INFO L225 Difference]: With dead ends: 117 [2021-11-19 14:14:57,165 INFO L226 Difference]: Without dead ends: 54 [2021-11-19 14:14:57,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:14:57,173 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:57,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:14:57,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-19 14:14:57,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-11-19 14:14:57,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 37 states have internal predecessors, (42), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-19 14:14:57,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2021-11-19 14:14:57,226 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 29 [2021-11-19 14:14:57,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:57,227 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2021-11-19 14:14:57,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 14:14:57,228 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2021-11-19 14:14:57,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 14:14:57,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:57,230 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:14:57,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:57,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:57,456 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:57,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:57,457 INFO L85 PathProgramCache]: Analyzing trace with hash 617864563, now seen corresponding path program 1 times [2021-11-19 14:14:57,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:57,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337591397] [2021-11-19 14:14:57,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:57,473 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:57,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:57,488 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:57,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:14:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:58,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 1331 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:14:58,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:58,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:14:58,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:58,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:14:58,775 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:58,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337591397] [2021-11-19 14:14:58,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337591397] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:14:58,776 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:14:58,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 14:14:58,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282153549] [2021-11-19 14:14:58,777 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:58,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:14:58,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:58,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:14:58,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:14:58,780 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 14:14:58,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:58,909 INFO L93 Difference]: Finished difference Result 99 states and 119 transitions. [2021-11-19 14:14:58,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:14:58,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2021-11-19 14:14:58,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:58,917 INFO L225 Difference]: With dead ends: 99 [2021-11-19 14:14:58,917 INFO L226 Difference]: Without dead ends: 57 [2021-11-19 14:14:58,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:14:58,920 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 15 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:58,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 221 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:14:58,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-19 14:14:58,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-19 14:14:58,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 40 states have internal predecessors, (44), 12 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-19 14:14:58,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2021-11-19 14:14:58,935 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 29 [2021-11-19 14:14:58,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:58,936 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2021-11-19 14:14:58,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 14:14:58,936 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2021-11-19 14:14:58,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 14:14:58,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:58,938 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:14:58,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:59,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:59,163 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:59,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:59,164 INFO L85 PathProgramCache]: Analyzing trace with hash 633470424, now seen corresponding path program 1 times [2021-11-19 14:14:59,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:59,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754983989] [2021-11-19 14:14:59,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:59,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:59,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:59,170 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:59,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:15:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:00,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:15:00,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:00,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:15:00,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:00,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:15:00,552 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:00,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754983989] [2021-11-19 14:15:00,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754983989] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:15:00,553 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:15:00,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 12 [2021-11-19 14:15:00,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062499870] [2021-11-19 14:15:00,553 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:00,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:15:00,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:15:00,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:15:00,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:15:00,555 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 14:15:00,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:00,758 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2021-11-19 14:15:00,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:15:00,759 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 31 [2021-11-19 14:15:00,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:00,761 INFO L225 Difference]: With dead ends: 69 [2021-11-19 14:15:00,761 INFO L226 Difference]: Without dead ends: 67 [2021-11-19 14:15:00,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:15:00,763 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 17 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:00,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 603 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:15:00,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-19 14:15:00,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2021-11-19 14:15:00,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 47 states have internal predecessors, (50), 13 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2021-11-19 14:15:00,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2021-11-19 14:15:00,786 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 31 [2021-11-19 14:15:00,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:00,787 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2021-11-19 14:15:00,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 14:15:00,787 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2021-11-19 14:15:00,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-19 14:15:00,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:00,789 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:00,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:15:00,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:15:00,996 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:00,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:00,997 INFO L85 PathProgramCache]: Analyzing trace with hash -843890528, now seen corresponding path program 1 times [2021-11-19 14:15:00,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:00,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861588344] [2021-11-19 14:15:00,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:00,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:00,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:01,000 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:01,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:15:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:02,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 1344 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 14:15:02,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:03,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:03,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 14 [2021-11-19 14:15:04,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:15:04,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:05,054 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:05,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 17 [2021-11-19 14:15:05,059 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 17 treesize of output 9 [2021-11-19 14:15:05,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:15:05,146 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:05,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861588344] [2021-11-19 14:15:05,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861588344] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:15:05,146 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:15:05,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 16 [2021-11-19 14:15:05,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845523839] [2021-11-19 14:15:05,147 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:05,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:15:05,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:15:05,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:15:05,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:15:05,148 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-19 14:15:07,274 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:15:09,281 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:15:11,288 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:15:13,297 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:15:13,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:13,985 INFO L93 Difference]: Finished difference Result 152 states and 176 transitions. [2021-11-19 14:15:13,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:15:13,988 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 35 [2021-11-19 14:15:13,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:13,991 INFO L225 Difference]: With dead ends: 152 [2021-11-19 14:15:13,991 INFO L226 Difference]: Without dead ends: 95 [2021-11-19 14:15:13,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:15:13,992 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 54 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:13,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 594 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 4 Unknown, 36 Unchecked, 8.7s Time] [2021-11-19 14:15:13,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-19 14:15:13,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 81. [2021-11-19 14:15:14,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 61 states have internal predecessors, (67), 13 states have call successors, (13), 7 states have call predecessors, (13), 9 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2021-11-19 14:15:14,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2021-11-19 14:15:14,001 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 35 [2021-11-19 14:15:14,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:14,001 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2021-11-19 14:15:14,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-19 14:15:14,001 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2021-11-19 14:15:14,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-19 14:15:14,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:14,002 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:14,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-19 14:15:14,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:15:14,203 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:14,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:14,204 INFO L85 PathProgramCache]: Analyzing trace with hash -585725090, now seen corresponding path program 1 times [2021-11-19 14:15:14,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:14,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016682907] [2021-11-19 14:15:14,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:14,207 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:14,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:14,208 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:14,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:15:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:15,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:15:15,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:15,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:15:15,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:15,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:15:15,929 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:15,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016682907] [2021-11-19 14:15:15,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016682907] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:15:15,930 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:15:15,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:15:15,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065166441] [2021-11-19 14:15:15,930 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:15,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:15:15,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:15:15,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:15:15,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:15:15,931 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 14:15:18,088 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:15:18,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:18,652 INFO L93 Difference]: Finished difference Result 130 states and 155 transitions. [2021-11-19 14:15:18,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:15:18,655 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 35 [2021-11-19 14:15:18,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:18,657 INFO L225 Difference]: With dead ends: 130 [2021-11-19 14:15:18,657 INFO L226 Difference]: Without dead ends: 76 [2021-11-19 14:15:18,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:15:18,658 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 3 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:18,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 261 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 1 Unknown, 14 Unchecked, 2.5s Time] [2021-11-19 14:15:18,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-19 14:15:18,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2021-11-19 14:15:18,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 54 states have internal predecessors, (58), 13 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2021-11-19 14:15:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2021-11-19 14:15:18,681 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 35 [2021-11-19 14:15:18,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:18,682 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2021-11-19 14:15:18,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 14:15:18,683 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2021-11-19 14:15:18,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-19 14:15:18,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:18,689 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:18,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:15:18,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:15:18,908 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:18,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:18,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1626961765, now seen corresponding path program 1 times [2021-11-19 14:15:18,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:18,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124566139] [2021-11-19 14:15:18,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:18,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:18,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:18,912 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:18,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:15:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:19,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:15:19,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:20,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:15:20,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:20,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:15:20,749 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:20,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124566139] [2021-11-19 14:15:20,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124566139] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:15:20,749 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:15:20,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-19 14:15:20,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045099928] [2021-11-19 14:15:20,750 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:20,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:15:20,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:15:20,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:15:20,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:15:20,752 INFO L87 Difference]: Start difference. First operand 74 states and 85 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 14:15:22,877 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:15:24,891 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:15:25,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:25,866 INFO L93 Difference]: Finished difference Result 126 states and 146 transitions. [2021-11-19 14:15:25,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:15:25,868 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37 [2021-11-19 14:15:25,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:25,870 INFO L225 Difference]: With dead ends: 126 [2021-11-19 14:15:25,870 INFO L226 Difference]: Without dead ends: 79 [2021-11-19 14:15:25,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:15:25,871 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 20 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:25,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 250 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 2 Unknown, 19 Unchecked, 4.7s Time] [2021-11-19 14:15:25,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-19 14:15:25,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 74. [2021-11-19 14:15:25,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 54 states have internal predecessors, (57), 13 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2021-11-19 14:15:25,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2021-11-19 14:15:25,881 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 37 [2021-11-19 14:15:25,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:25,882 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2021-11-19 14:15:25,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 14:15:25,882 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2021-11-19 14:15:25,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-19 14:15:25,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:25,883 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:25,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:15:26,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:15:26,100 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:26,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:26,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1966940953, now seen corresponding path program 1 times [2021-11-19 14:15:26,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:26,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434397298] [2021-11-19 14:15:26,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:26,102 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:26,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:26,102 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:26,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:15:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:26,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 1351 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 14:15:26,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:15:31,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:32,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:15:32,649 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:32,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434397298] [2021-11-19 14:15:32,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434397298] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:15:32,650 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:15:32,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 23 [2021-11-19 14:15:32,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994031696] [2021-11-19 14:15:32,650 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:32,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-19 14:15:32,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:15:32,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-19 14:15:32,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:15:32,652 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand has 23 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 19 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 14:15:34,745 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:15:36,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:15:39,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:39,677 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2021-11-19 14:15:39,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 14:15:39,677 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 19 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 37 [2021-11-19 14:15:39,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:39,678 INFO L225 Difference]: With dead ends: 86 [2021-11-19 14:15:39,678 INFO L226 Difference]: Without dead ends: 84 [2021-11-19 14:15:39,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=149, Invalid=907, Unknown=0, NotChecked=0, Total=1056 [2021-11-19 14:15:39,681 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 49 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 20 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:39,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 855 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 234 Invalid, 2 Unknown, 65 Unchecked, 4.6s Time] [2021-11-19 14:15:39,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-19 14:15:39,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 73. [2021-11-19 14:15:39,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 54 states have internal predecessors, (57), 12 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2021-11-19 14:15:39,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2021-11-19 14:15:39,690 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 37 [2021-11-19 14:15:39,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:39,691 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2021-11-19 14:15:39,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 19 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 14:15:39,691 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2021-11-19 14:15:39,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-19 14:15:39,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:39,693 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:39,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-19 14:15:39,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:15:39,900 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:39,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:39,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1038585084, now seen corresponding path program 1 times [2021-11-19 14:15:39,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:39,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453791] [2021-11-19 14:15:39,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:39,902 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:39,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:39,903 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:39,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:15:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:40,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 1367 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:15:40,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:40,763 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 14:15:40,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:40,965 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 14:15:40,965 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:40,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453791] [2021-11-19 14:15:40,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453791] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:15:40,966 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:15:40,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 14:15:40,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125718363] [2021-11-19 14:15:40,966 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:40,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:15:40,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:15:40,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:15:40,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:15:40,967 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-19 14:15:41,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:41,079 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2021-11-19 14:15:41,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:15:41,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 44 [2021-11-19 14:15:41,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:41,083 INFO L225 Difference]: With dead ends: 101 [2021-11-19 14:15:41,083 INFO L226 Difference]: Without dead ends: 73 [2021-11-19 14:15:41,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:15:41,085 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 19 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:41,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 199 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:15:41,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-19 14:15:41,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-11-19 14:15:41,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 54 states have internal predecessors, (56), 12 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2021-11-19 14:15:41,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2021-11-19 14:15:41,094 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 44 [2021-11-19 14:15:41,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:41,095 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2021-11-19 14:15:41,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-19 14:15:41,095 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2021-11-19 14:15:41,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-19 14:15:41,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:41,097 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:41,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:15:41,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:15:41,315 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:41,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:41,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1442491607, now seen corresponding path program 1 times [2021-11-19 14:15:41,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:41,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534721174] [2021-11-19 14:15:41,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:41,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:41,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:41,317 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:41,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:15:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:42,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-19 14:15:42,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:42,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:42,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 82 [2021-11-19 14:15:48,647 INFO L354 Elim1Store]: treesize reduction 192, result has 0.5 percent of original size [2021-11-19 14:15:48,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 24 select indices, 24 select index equivalence classes, 28 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 276 case distinctions, treesize of input 639 treesize of output 223 [2021-11-19 14:15:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:15:48,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:56,997 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 14:15:56,997 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:56,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534721174] [2021-11-19 14:15:56,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534721174] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:15:56,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [655940746] [2021-11-19 14:15:56,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:56,998 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:15:56,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:15:57,005 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:15:57,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-19 14:16:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:00,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:16:00,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 14:16:01,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:01,836 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 14:16:01,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [655940746] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:16:01,836 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:16:01,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [24, 15] total 41 [2021-11-19 14:16:01,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577135576] [2021-11-19 14:16:01,837 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:01,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:16:01,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:01,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:16:01,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1513, Unknown=0, NotChecked=0, Total=1640 [2021-11-19 14:16:01,839 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand has 12 states, 10 states have (on average 3.3) internal successors, (33), 8 states have internal predecessors, (33), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-19 14:16:02,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:02,145 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2021-11-19 14:16:02,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:16:02,146 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.3) internal successors, (33), 8 states have internal predecessors, (33), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 46 [2021-11-19 14:16:02,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:02,147 INFO L225 Difference]: With dead ends: 85 [2021-11-19 14:16:02,147 INFO L226 Difference]: Without dead ends: 83 [2021-11-19 14:16:02,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=139, Invalid=1667, Unknown=0, NotChecked=0, Total=1806 [2021-11-19 14:16:02,149 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 18 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:02,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 455 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:16:02,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-19 14:16:02,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2021-11-19 14:16:02,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 61 states have internal predecessors, (62), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2021-11-19 14:16:02,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2021-11-19 14:16:02,158 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 46 [2021-11-19 14:16:02,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:02,159 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2021-11-19 14:16:02,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.3) internal successors, (33), 8 states have internal predecessors, (33), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-19 14:16:02,159 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2021-11-19 14:16:02,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-19 14:16:02,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:02,161 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:16:02,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2021-11-19 14:16:02,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:02,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:16:02,571 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:02,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:02,571 INFO L85 PathProgramCache]: Analyzing trace with hash 979191153, now seen corresponding path program 1 times [2021-11-19 14:16:02,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:02,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847294939] [2021-11-19 14:16:02,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:02,573 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:02,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:02,573 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:02,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:16:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:03,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 1380 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-19 14:16:03,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:03,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:16:03,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 82 [2021-11-19 14:16:08,862 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:16:08,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:14,824 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 14:16:14,824 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:14,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847294939] [2021-11-19 14:16:14,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847294939] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:16:14,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1697407855] [2021-11-19 14:16:14,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:14,824 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:16:14,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:16:14,825 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:16:14,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_799c3e42-bfb6-4d04-a5e3-5fadb97ac29e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-19 14:16:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:17,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 1380 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:16:17,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:17,930 INFO L354 Elim1Store]: treesize reduction 1434, result has 0.6 percent of original size [2021-11-19 14:16:17,931 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 8 case distinctions, treesize of input 102 treesize of output 14 [2021-11-19 14:16:23,069 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:16:23,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:25,825 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:16:25,832 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 535 [2021-11-19 14:16:29,626 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:16:29,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14632874302 treesize of output 14363390264