./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_compare_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_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/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_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/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_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/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 66fb9bfec5c458b51d86deb6748dd65f162e7ac6a772af5f3fec59d101a18d8d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:14:24,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:14:24,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:14:24,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:14:24,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:14:24,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:14:24,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:14:24,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:14:24,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:14:24,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:14:24,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:14:24,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:14:24,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:14:24,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:14:24,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:14:24,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:14:24,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:14:24,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:14:24,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:14:24,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:14:24,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:14:24,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:14:24,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:14:24,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:14:24,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:14:24,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:14:24,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:14:24,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:14:24,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:14:24,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:14:24,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:14:24,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:14:24,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:14:24,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:14:24,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:14:24,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:14:24,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:14:24,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:14:24,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:14:24,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:14:24,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:14:24,661 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:14:24,709 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:14:24,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:14:24,711 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:14:24,712 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:14:24,712 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:14:24,712 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:14:24,712 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:14:24,713 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:14:24,713 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:14:24,713 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:14:24,721 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:14:24,722 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:14:24,722 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:14:24,723 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:14:24,723 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:14:24,723 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:14:24,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:14:24,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:14:24,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:14:24,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:14:24,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:14:24,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:14:24,726 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:14:24,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:14:24,727 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:14:24,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:14:24,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:14:24,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:14:24,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:24,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:14:24,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:14:24,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:14:24,731 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:14:24,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:14:24,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:14:24,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:14:24,733 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:14:24,733 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_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66fb9bfec5c458b51d86deb6748dd65f162e7ac6a772af5f3fec59d101a18d8d [2021-11-19 14:14:25,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:14:25,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:14:25,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:14:25,161 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:14:25,162 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:14:25,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i [2021-11-19 14:14:25,232 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/data/97a41e840/f27906c391ec468083579f96241cd71f/FLAGaa5565ff4 [2021-11-19 14:14:26,407 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:14:26,409 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i [2021-11-19 14:14:26,480 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/data/97a41e840/f27906c391ec468083579f96241cd71f/FLAGaa5565ff4 [2021-11-19 14:14:26,661 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/data/97a41e840/f27906c391ec468083579f96241cd71f [2021-11-19 14:14:26,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:14:26,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:14:26,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:26,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:14:26,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:14:26,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:26" (1/1) ... [2021-11-19 14:14:26,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d7ffac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:26, skipping insertion in model container [2021-11-19 14:14:26,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:26" (1/1) ... [2021-11-19 14:14:26,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:14:26,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:14:27,295 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_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4492,4505] [2021-11-19 14:14:27,303 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_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4552,4565] [2021-11-19 14:14:27,334 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:14:27,341 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:14:28,475 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:28,476 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:28,477 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:28,478 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:28,480 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:28,497 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:28,497 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:28,505 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:28,516 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:29,080 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:14:29,081 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:14:29,082 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:14:29,084 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:14:29,086 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:14:29,087 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:14:29,088 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:14:29,089 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:14:29,095 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:14:29,096 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:14:29,365 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:14:29,481 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:29,482 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:29,590 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:29,652 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 14:14:29,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7e146531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:29, skipping insertion in model container [2021-11-19 14:14:29,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:29,653 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:14:29,656 INFO L158 Benchmark]: Toolchain (without parser) took 2988.59ms. Allocated memory was 104.9MB in the beginning and 132.1MB in the end (delta: 27.3MB). Free memory was 75.8MB in the beginning and 76.6MB in the end (delta: -863.7kB). Peak memory consumption was 41.3MB. Max. memory is 16.1GB. [2021-11-19 14:14:29,657 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 104.9MB. Free memory is still 78.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:14:29,658 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2982.51ms. Allocated memory was 104.9MB in the beginning and 132.1MB in the end (delta: 27.3MB). Free memory was 75.5MB in the beginning and 76.6MB in the end (delta: -1.2MB). Peak memory consumption was 41.3MB. Max. memory is 16.1GB. [2021-11-19 14:14:29,660 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 104.9MB. Free memory is still 78.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2982.51ms. Allocated memory was 104.9MB in the beginning and 132.1MB in the end (delta: 27.3MB). Free memory was 75.5MB in the beginning and 76.6MB in the end (delta: -1.2MB). Peak memory consumption was 41.3MB. 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_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/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_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/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_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/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 66fb9bfec5c458b51d86deb6748dd65f162e7ac6a772af5f3fec59d101a18d8d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:14:32,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:14:32,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:14:32,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:14:32,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:14:32,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:14:32,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:14:32,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:14:32,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:14:32,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:14:32,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:14:32,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:14:32,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:14:32,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:14:32,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:14:32,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:14:32,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:14:32,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:14:32,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:14:32,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:14:32,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:14:32,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:14:32,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:14:32,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:14:32,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:14:32,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:14:32,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:14:32,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:14:32,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:14:32,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:14:32,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:14:32,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:14:32,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:14:32,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:14:32,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:14:32,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:14:32,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:14:32,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:14:32,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:14:32,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:14:32,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:14:32,242 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:14:32,297 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:14:32,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:14:32,299 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:14:32,299 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:14:32,299 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:14:32,299 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:14:32,299 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:14:32,300 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:14:32,300 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:14:32,300 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:14:32,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:14:32,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:14:32,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:14:32,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:14:32,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:14:32,304 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:14:32,304 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:14:32,304 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:14:32,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:14:32,304 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:14:32,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:14:32,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:14:32,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:14:32,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:14:32,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:32,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:14:32,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:14:32,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:14:32,306 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:14:32,307 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:14:32,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:14:32,307 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:14:32,307 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:14:32,307 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_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66fb9bfec5c458b51d86deb6748dd65f162e7ac6a772af5f3fec59d101a18d8d [2021-11-19 14:14:32,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:14:32,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:14:32,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:14:32,827 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:14:32,828 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:14:32,830 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i [2021-11-19 14:14:32,931 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/data/d29329ead/d7c183196b3c47f1a91799e6029a7343/FLAG89cc401a1 [2021-11-19 14:14:34,085 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:14:34,086 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i [2021-11-19 14:14:34,135 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/data/d29329ead/d7c183196b3c47f1a91799e6029a7343/FLAG89cc401a1 [2021-11-19 14:14:34,449 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/data/d29329ead/d7c183196b3c47f1a91799e6029a7343 [2021-11-19 14:14:34,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:14:34,458 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:14:34,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:34,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:14:34,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:14:34,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:34" (1/1) ... [2021-11-19 14:14:34,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec5d378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:34, skipping insertion in model container [2021-11-19 14:14:34,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:34" (1/1) ... [2021-11-19 14:14:34,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:14:34,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:14:34,995 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_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4492,4505] [2021-11-19 14:14:35,007 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_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4552,4565] [2021-11-19 14:14:35,047 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:14:35,057 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:14:36,294 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:36,300 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:36,305 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:36,308 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:36,312 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:36,339 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:36,340 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:36,344 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:36,355 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:36,885 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:14:36,887 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:14:36,888 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:14:36,890 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:14:36,894 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:14:36,895 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:14:36,896 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:14:36,897 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:14:36,898 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:14:36,899 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:14:37,181 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:14:37,394 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:37,397 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:37,530 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:37,655 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:14:37,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:14:37,730 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_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4492,4505] [2021-11-19 14:14:37,736 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_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4552,4565] [2021-11-19 14:14:37,738 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:14:37,741 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:14:37,800 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:37,800 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:37,801 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:37,801 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:37,802 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:37,817 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:37,817 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:37,819 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:37,819 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:37,911 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:14:37,912 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:14:37,913 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:14:37,914 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:14:37,918 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:14:37,922 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:14:37,923 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:14:37,924 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:14:37,924 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:14:37,926 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:14:37,955 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:14:38,062 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:38,062 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:38,174 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:38,239 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:14:38,270 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_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4492,4505] [2021-11-19 14:14:38,271 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_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4552,4565] [2021-11-19 14:14:38,273 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:14:38,274 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:14:38,325 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:38,326 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:38,326 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:38,327 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:38,327 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:38,334 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:38,335 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:38,336 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:38,337 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:38,381 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:14:38,382 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:14:38,383 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:14:38,384 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:14:38,386 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:14:38,387 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:14:38,388 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:14:38,389 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:14:38,390 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:14:38,392 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:14:38,429 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:14:38,544 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:38,544 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:38,603 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:39,054 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:14:39,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:39 WrapperNode [2021-11-19 14:14:39,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:39,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:14:39,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:14:39,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:14:39,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:39" (1/1) ... [2021-11-19 14:14:39,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:39" (1/1) ... [2021-11-19 14:14:39,468 INFO L137 Inliner]: procedures = 715, calls = 2782, calls flagged for inlining = 57, calls inlined = 5, statements flattened = 817 [2021-11-19 14:14:39,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:14:39,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:14:39,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:14:39,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:14:39,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:39" (1/1) ... [2021-11-19 14:14:39,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:39" (1/1) ... [2021-11-19 14:14:39,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:39" (1/1) ... [2021-11-19 14:14:39,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:39" (1/1) ... [2021-11-19 14:14:39,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:39" (1/1) ... [2021-11-19 14:14:39,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:39" (1/1) ... [2021-11-19 14:14:39,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:39" (1/1) ... [2021-11-19 14:14:39,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:14:39,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:14:39,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:14:39,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:14:39,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:39" (1/1) ... [2021-11-19 14:14:39,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:39,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:14:39,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:14:39,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:14:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-11-19 14:14:39,706 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-11-19 14:14:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_compare [2021-11-19 14:14:39,706 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_compare [2021-11-19 14:14:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2021-11-19 14:14:39,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2021-11-19 14:14:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 14:14:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 14:14:39,709 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 14:14:39,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:14:39,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:14:39,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:14:39,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:14:39,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:14:39,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:14:39,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:14:39,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:14:39,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:14:39,711 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 14:14:39,711 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 14:14:39,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:14:39,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:14:39,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 14:14:39,712 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2021-11-19 14:14:39,712 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2021-11-19 14:14:39,712 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:14:39,712 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:14:39,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:14:39,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:14:39,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:14:39,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:14:39,714 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 14:14:39,714 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 14:14:39,714 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 14:14:39,714 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 14:14:40,095 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:14:40,097 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:14:44,529 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:14:44,545 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:14:44,545 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 14:14:44,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:14:44 BoogieIcfgContainer [2021-11-19 14:14:44,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:14:44,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:14:44,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:14:44,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:14:44,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:14:34" (1/3) ... [2021-11-19 14:14:44,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18eaf713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:14:44, skipping insertion in model container [2021-11-19 14:14:44,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:39" (2/3) ... [2021-11-19 14:14:44,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18eaf713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:14:44, skipping insertion in model container [2021-11-19 14:14:44,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:14:44" (3/3) ... [2021-11-19 14:14:44,572 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_compare_harness.i [2021-11-19 14:14:44,578 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:14:44,579 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:14:44,663 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:14:44,675 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 14:14:44,675 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:14:44,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 80 states have internal predecessors, (103), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-19 14:14:44,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-19 14:14:44,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:44,720 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1] [2021-11-19 14:14:44,721 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:44,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:44,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2002868872, now seen corresponding path program 1 times [2021-11-19 14:14:44,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:44,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391706932] [2021-11-19 14:14:44,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:44,750 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:44,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:44,757 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:44,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:14:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:45,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:14:45,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:46,107 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-19 14:14:46,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:46,340 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-19 14:14:46,341 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:46,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391706932] [2021-11-19 14:14:46,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391706932] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:14:46,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:14:46,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-19 14:14:46,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592231178] [2021-11-19 14:14:46,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:46,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:14:46,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:46,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:14:46,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:14:46,393 INFO L87 Difference]: Start difference. First operand has 124 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 80 states have internal predecessors, (103), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 14:14:46,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:46,472 INFO L93 Difference]: Finished difference Result 243 states and 348 transitions. [2021-11-19 14:14:46,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:14:46,476 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 51 [2021-11-19 14:14:46,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:46,491 INFO L225 Difference]: With dead ends: 243 [2021-11-19 14:14:46,491 INFO L226 Difference]: Without dead ends: 119 [2021-11-19 14:14:46,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:14:46,503 INFO L933 BasicCegarLoop]: 167 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, 167 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 14:14:46,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:14:46,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-19 14:14:46,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-11-19 14:14:46,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 75 states have (on average 1.28) internal successors, (96), 76 states have internal predecessors, (96), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-11-19 14:14:46,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 161 transitions. [2021-11-19 14:14:46,583 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 161 transitions. Word has length 51 [2021-11-19 14:14:46,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:46,587 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 161 transitions. [2021-11-19 14:14:46,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 14:14:46,588 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 161 transitions. [2021-11-19 14:14:46,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-19 14:14:46,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:46,601 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1] [2021-11-19 14:14:46,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:46,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:46,802 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:46,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:46,803 INFO L85 PathProgramCache]: Analyzing trace with hash 598414408, now seen corresponding path program 1 times [2021-11-19 14:14:46,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:46,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469993589] [2021-11-19 14:14:46,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:46,807 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:46,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:46,810 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:46,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:14:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:47,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:14:47,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:47,950 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-19 14:14:47,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:48,103 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-19 14:14:48,103 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:48,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469993589] [2021-11-19 14:14:48,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469993589] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:14:48,104 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:14:48,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:14:48,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256351623] [2021-11-19 14:14:48,105 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:48,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:14:48,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:48,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:14:48,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:14:48,111 INFO L87 Difference]: Start difference. First operand 119 states and 161 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 14:14:48,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:48,199 INFO L93 Difference]: Finished difference Result 165 states and 221 transitions. [2021-11-19 14:14:48,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:14:48,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 51 [2021-11-19 14:14:48,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:48,213 INFO L225 Difference]: With dead ends: 165 [2021-11-19 14:14:48,215 INFO L226 Difference]: Without dead ends: 129 [2021-11-19 14:14:48,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:14:48,218 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 6 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:48,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 331 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:14:48,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-19 14:14:48,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 122. [2021-11-19 14:14:48,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 77 states have (on average 1.2857142857142858) internal successors, (99), 78 states have internal predecessors, (99), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-19 14:14:48,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 166 transitions. [2021-11-19 14:14:48,256 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 166 transitions. Word has length 51 [2021-11-19 14:14:48,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:48,257 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 166 transitions. [2021-11-19 14:14:48,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 14:14:48,257 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 166 transitions. [2021-11-19 14:14:48,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-19 14:14:48,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:48,269 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1] [2021-11-19 14:14:48,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:48,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:48,484 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:48,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:48,485 INFO L85 PathProgramCache]: Analyzing trace with hash 536374794, now seen corresponding path program 1 times [2021-11-19 14:14:48,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:48,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824175295] [2021-11-19 14:14:48,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:48,488 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:48,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:48,490 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:48,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:14:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:49,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:14:49,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:49,755 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-19 14:14:49,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:50,054 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-19 14:14:50,055 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:50,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824175295] [2021-11-19 14:14:50,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824175295] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:14:50,055 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:14:50,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:14:50,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691252966] [2021-11-19 14:14:50,056 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:50,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:14:50,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:50,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:14:50,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:14:50,058 INFO L87 Difference]: Start difference. First operand 122 states and 166 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 14:14:50,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:50,162 INFO L93 Difference]: Finished difference Result 180 states and 245 transitions. [2021-11-19 14:14:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:14:50,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 51 [2021-11-19 14:14:50,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:50,166 INFO L225 Difference]: With dead ends: 180 [2021-11-19 14:14:50,166 INFO L226 Difference]: Without dead ends: 144 [2021-11-19 14:14:50,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:14:50,168 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 8 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:50,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 474 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:14:50,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-19 14:14:50,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 138. [2021-11-19 14:14:50,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 88 states have (on average 1.2954545454545454) internal successors, (114), 89 states have internal predecessors, (114), 39 states have call successors, (39), 10 states have call predecessors, (39), 10 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-11-19 14:14:50,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 191 transitions. [2021-11-19 14:14:50,192 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 191 transitions. Word has length 51 [2021-11-19 14:14:50,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:50,193 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 191 transitions. [2021-11-19 14:14:50,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 14:14:50,194 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 191 transitions. [2021-11-19 14:14:50,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-19 14:14:50,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:50,196 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:14:50,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:50,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:50,407 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:50,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:50,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1692368516, now seen corresponding path program 1 times [2021-11-19 14:14:50,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:50,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401350507] [2021-11-19 14:14:50,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:50,413 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:50,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:50,415 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:50,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:14:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:51,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:14:51,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-19 14:14:51,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:51,502 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-19 14:14:51,502 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:51,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401350507] [2021-11-19 14:14:51,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401350507] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:14:51,503 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:14:51,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:14:51,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236608126] [2021-11-19 14:14:51,503 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:51,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:14:51,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:51,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:14:51,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:14:51,505 INFO L87 Difference]: Start difference. First operand 138 states and 191 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 14:14:51,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:51,553 INFO L93 Difference]: Finished difference Result 164 states and 226 transitions. [2021-11-19 14:14:51,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:14:51,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 60 [2021-11-19 14:14:51,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:51,556 INFO L225 Difference]: With dead ends: 164 [2021-11-19 14:14:51,556 INFO L226 Difference]: Without dead ends: 143 [2021-11-19 14:14:51,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:14:51,557 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 0 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:51,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 471 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:14:51,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-19 14:14:51,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-11-19 14:14:51,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 92 states have (on average 1.2826086956521738) internal successors, (118), 91 states have internal predecessors, (118), 39 states have call successors, (39), 10 states have call predecessors, (39), 11 states have return successors, (41), 41 states have call predecessors, (41), 38 states have call successors, (41) [2021-11-19 14:14:51,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 198 transitions. [2021-11-19 14:14:51,595 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 198 transitions. Word has length 60 [2021-11-19 14:14:51,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:51,598 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 198 transitions. [2021-11-19 14:14:51,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 14:14:51,599 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 198 transitions. [2021-11-19 14:14:51,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-19 14:14:51,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:51,604 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:14:51,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:51,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:51,819 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:51,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:51,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1323998280, now seen corresponding path program 1 times [2021-11-19 14:14:51,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:51,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320379311] [2021-11-19 14:14:51,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:51,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:51,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:51,823 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:51,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:14:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:52,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:14:52,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:52,909 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-19 14:14:52,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:53,129 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-19 14:14:53,129 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:53,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320379311] [2021-11-19 14:14:53,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320379311] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:14:53,130 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:14:53,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 14:14:53,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444188777] [2021-11-19 14:14:53,130 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:53,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:14:53,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:53,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:14:53,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:14:53,132 INFO L87 Difference]: Start difference. First operand 143 states and 198 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-19 14:14:53,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:53,243 INFO L93 Difference]: Finished difference Result 207 states and 286 transitions. [2021-11-19 14:14:53,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:14:53,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 61 [2021-11-19 14:14:53,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:53,249 INFO L225 Difference]: With dead ends: 207 [2021-11-19 14:14:53,249 INFO L226 Difference]: Without dead ends: 165 [2021-11-19 14:14:53,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:14:53,255 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 5 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:53,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 658 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:14:53,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-19 14:14:53,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2021-11-19 14:14:53,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 104 states have (on average 1.2788461538461537) internal successors, (133), 104 states have internal predecessors, (133), 45 states have call successors, (45), 10 states have call predecessors, (45), 11 states have return successors, (46), 46 states have call predecessors, (46), 42 states have call successors, (46) [2021-11-19 14:14:53,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 224 transitions. [2021-11-19 14:14:53,281 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 224 transitions. Word has length 61 [2021-11-19 14:14:53,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:53,282 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 224 transitions. [2021-11-19 14:14:53,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-19 14:14:53,282 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 224 transitions. [2021-11-19 14:14:53,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-19 14:14:53,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:53,284 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:14:53,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:53,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:53,507 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:53,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:53,507 INFO L85 PathProgramCache]: Analyzing trace with hash -921581174, now seen corresponding path program 1 times [2021-11-19 14:14:53,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:53,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507243191] [2021-11-19 14:14:53,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:53,509 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:53,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:53,510 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:53,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:14:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:54,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:14:54,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-19 14:14:54,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:54,950 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-19 14:14:54,950 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:54,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507243191] [2021-11-19 14:14:54,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507243191] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:14:54,951 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:14:54,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-19 14:14:54,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83077072] [2021-11-19 14:14:54,952 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:54,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:14:54,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:54,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:14:54,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:14:54,953 INFO L87 Difference]: Start difference. First operand 161 states and 224 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-11-19 14:14:55,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:55,284 INFO L93 Difference]: Finished difference Result 189 states and 259 transitions. [2021-11-19 14:14:55,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:14:55,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 61 [2021-11-19 14:14:55,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:55,290 INFO L225 Difference]: With dead ends: 189 [2021-11-19 14:14:55,290 INFO L226 Difference]: Without dead ends: 169 [2021-11-19 14:14:55,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:14:55,293 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 27 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:55,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 983 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:14:55,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-19 14:14:55,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 160. [2021-11-19 14:14:55,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 103 states have (on average 1.2815533980582525) internal successors, (132), 103 states have internal predecessors, (132), 45 states have call successors, (45), 10 states have call predecessors, (45), 11 states have return successors, (46), 46 states have call predecessors, (46), 42 states have call successors, (46) [2021-11-19 14:14:55,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 223 transitions. [2021-11-19 14:14:55,326 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 223 transitions. Word has length 61 [2021-11-19 14:14:55,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:55,329 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 223 transitions. [2021-11-19 14:14:55,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-11-19 14:14:55,329 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 223 transitions. [2021-11-19 14:14:55,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-19 14:14:55,332 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:55,332 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:14:55,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:55,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:55,559 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:55,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:55,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1231915283, now seen corresponding path program 1 times [2021-11-19 14:14:55,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:55,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712248634] [2021-11-19 14:14:55,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:55,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:55,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:55,562 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:55,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:14:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:56,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:14:56,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:57,271 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-19 14:14:57,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:59,198 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-19 14:14:59,198 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:59,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712248634] [2021-11-19 14:14:59,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712248634] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:14:59,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:14:59,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 16 [2021-11-19 14:14:59,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697821564] [2021-11-19 14:14:59,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:59,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:14:59,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:59,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:14:59,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:14:59,202 INFO L87 Difference]: Start difference. First operand 160 states and 223 transitions. Second operand has 10 states, 8 states have (on average 6.5) internal successors, (52), 9 states have internal predecessors, (52), 6 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-11-19 14:14:59,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:59,807 INFO L93 Difference]: Finished difference Result 249 states and 345 transitions. [2021-11-19 14:14:59,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:14:59,808 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 9 states have internal predecessors, (52), 6 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 89 [2021-11-19 14:14:59,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:59,810 INFO L225 Difference]: With dead ends: 249 [2021-11-19 14:14:59,810 INFO L226 Difference]: Without dead ends: 147 [2021-11-19 14:14:59,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:14:59,812 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 11 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:59,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 1273 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 21 Unchecked, 0.2s Time] [2021-11-19 14:14:59,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-19 14:14:59,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-11-19 14:14:59,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 94 states have (on average 1.2659574468085106) internal successors, (119), 95 states have internal predecessors, (119), 41 states have call successors, (41), 10 states have call predecessors, (41), 11 states have return successors, (41), 41 states have call predecessors, (41), 38 states have call successors, (41) [2021-11-19 14:14:59,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 201 transitions. [2021-11-19 14:14:59,828 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 201 transitions. Word has length 89 [2021-11-19 14:14:59,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:59,828 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 201 transitions. [2021-11-19 14:14:59,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 9 states have internal predecessors, (52), 6 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-11-19 14:14:59,829 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 201 transitions. [2021-11-19 14:14:59,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-19 14:14:59,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:59,831 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:14:59,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:15:00,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:15:00,055 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:00,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:00,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1509060067, now seen corresponding path program 1 times [2021-11-19 14:15:00,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:00,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508421620] [2021-11-19 14:15:00,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:00,057 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:00,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:00,058 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:00,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:15:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:00,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:15:00,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:01,636 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-19 14:15:01,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:03,427 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-19 14:15:03,427 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:03,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508421620] [2021-11-19 14:15:03,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508421620] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:15:03,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:15:03,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 16 [2021-11-19 14:15:03,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792642798] [2021-11-19 14:15:03,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:03,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:15:03,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:15:03,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:15:03,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:15:03,429 INFO L87 Difference]: Start difference. First operand 147 states and 201 transitions. Second operand has 10 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 6 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-11-19 14:15:04,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:04,035 INFO L93 Difference]: Finished difference Result 208 states and 277 transitions. [2021-11-19 14:15:04,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:15:04,036 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 6 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 85 [2021-11-19 14:15:04,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:04,038 INFO L225 Difference]: With dead ends: 208 [2021-11-19 14:15:04,038 INFO L226 Difference]: Without dead ends: 65 [2021-11-19 14:15:04,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:15:04,041 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 11 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:04,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 991 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 18 Unchecked, 0.2s Time] [2021-11-19 14:15:04,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-19 14:15:04,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-11-19 14:15:04,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 43 states have internal predecessors, (50), 17 states have call successors, (17), 6 states have call predecessors, (17), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-19 14:15:04,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2021-11-19 14:15:04,049 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 85 [2021-11-19 14:15:04,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:04,049 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2021-11-19 14:15:04,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 6 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-11-19 14:15:04,050 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2021-11-19 14:15:04,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 14:15:04,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:04,051 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:04,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:15:04,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:15:04,267 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:04,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:04,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1836992773, now seen corresponding path program 1 times [2021-11-19 14:15:04,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:04,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979612419] [2021-11-19 14:15:04,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:04,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:04,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:04,271 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:04,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:15:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:05,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-19 14:15:05,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:05,665 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-19 14:15:05,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:06,107 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-19 14:15:06,107 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:06,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979612419] [2021-11-19 14:15:06,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1979612419] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:15:06,108 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:15:06,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 10 [2021-11-19 14:15:06,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789371611] [2021-11-19 14:15:06,108 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:06,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:15:06,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:15:06,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:15:06,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:15:06,110 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand has 10 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 7 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2021-11-19 14:15:06,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:06,332 INFO L93 Difference]: Finished difference Result 113 states and 142 transitions. [2021-11-19 14:15:06,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:15:06,335 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 7 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 96 [2021-11-19 14:15:06,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:06,336 INFO L225 Difference]: With dead ends: 113 [2021-11-19 14:15:06,337 INFO L226 Difference]: Without dead ends: 65 [2021-11-19 14:15:06,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:15:06,338 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 25 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:06,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 639 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:15:06,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-19 14:15:06,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-11-19 14:15:06,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 43 states have internal predecessors, (49), 17 states have call successors, (17), 6 states have call predecessors, (17), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-19 14:15:06,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 81 transitions. [2021-11-19 14:15:06,347 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 81 transitions. Word has length 96 [2021-11-19 14:15:06,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:06,347 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 81 transitions. [2021-11-19 14:15:06,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 7 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2021-11-19 14:15:06,348 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 81 transitions. [2021-11-19 14:15:06,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 14:15:06,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:06,350 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:06,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:15:06,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:15:06,575 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:06,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:06,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1490623869, now seen corresponding path program 1 times [2021-11-19 14:15:06,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:06,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825244334] [2021-11-19 14:15:06,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:06,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:06,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:06,578 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:06,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:15:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:07,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-19 14:15:07,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:08,211 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-19 14:15:08,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:08,961 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-19 14:15:08,961 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:08,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825244334] [2021-11-19 14:15:08,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825244334] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:15:08,962 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:15:08,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2021-11-19 14:15:08,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479049658] [2021-11-19 14:15:08,962 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:08,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:15:08,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:15:08,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:15:08,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:15:08,964 INFO L87 Difference]: Start difference. First operand 65 states and 81 transitions. Second operand has 16 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 9 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2021-11-19 14:15:09,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:09,300 INFO L93 Difference]: Finished difference Result 76 states and 92 transitions. [2021-11-19 14:15:09,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:15:09,301 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 9 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 96 [2021-11-19 14:15:09,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:09,302 INFO L225 Difference]: With dead ends: 76 [2021-11-19 14:15:09,302 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 14:15:09,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:15:09,303 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 29 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:09,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 485 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:15:09,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 14:15:09,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 14:15:09,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:15:09,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 14:15:09,305 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 96 [2021-11-19 14:15:09,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:09,306 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 14:15:09,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 9 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2021-11-19 14:15:09,306 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 14:15:09,306 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 14:15:09,309 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 14:15:09,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-19 14:15:09,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:15:09,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-19 14:15:10,276 INFO L854 garLoopResultBuilder]: At program point L6815(lines 6806 6816) the Hoare annotation is: (exists ((|ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| (_ BitVec 64))) (and (bvult |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) (bvule (bvadd (_ bv9223372036853541257 64) |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1|) (_ bv36028797018963967 64)))) [2021-11-19 14:15:10,276 INFO L858 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthEXIT(lines 6800 6804) no Hoare annotation was computed. [2021-11-19 14:15:10,277 INFO L854 garLoopResultBuilder]: At program point L6810(line 6810) the Hoare annotation is: (and (exists ((|ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| (_ BitVec 64))) (and (bvult |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) (bvule (bvadd (_ bv9223372036853541257 64) |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1|) (_ bv36028797018963967 64)))) (bvult |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) (= |ensure_string_is_allocated_bounded_length_~max_size#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) (bvult |ensure_string_is_allocated_bounded_length_~len~1#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|)) [2021-11-19 14:15:10,277 INFO L858 garLoopResultBuilder]: For program point L6807-1(line 6807) no Hoare annotation was computed. [2021-11-19 14:15:10,277 INFO L854 garLoopResultBuilder]: At program point L6807(line 6807) the Hoare annotation is: (and (bvult |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) (= |ensure_string_is_allocated_bounded_length_~max_size#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) (bvult |ensure_string_is_allocated_bounded_length_~len~1#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|)) [2021-11-19 14:15:10,277 INFO L858 garLoopResultBuilder]: For program point L6810-3(line 6810) no Hoare annotation was computed. [2021-11-19 14:15:10,278 INFO L854 garLoopResultBuilder]: At program point L6810-2(line 6810) the Hoare annotation is: (exists ((|ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| (_ BitVec 64))) (and (bvult |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) (bvule (bvadd (_ bv9223372036853541257 64) |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1|) (_ bv36028797018963967 64)))) [2021-11-19 14:15:10,278 INFO L858 garLoopResultBuilder]: For program point L6810-1(lines 6810 6811) no Hoare annotation was computed. [2021-11-19 14:15:10,278 INFO L854 garLoopResultBuilder]: At program point L6802(line 6802) the Hoare annotation is: (= |ensure_string_is_allocated_bounded_length_~max_size#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) [2021-11-19 14:15:10,278 INFO L861 garLoopResultBuilder]: At program point ensure_string_is_allocated_bounded_lengthENTRY(lines 6800 6804) the Hoare annotation is: true [2021-11-19 14:15:10,278 INFO L858 garLoopResultBuilder]: For program point L6810-5(lines 6810 6811) no Hoare annotation was computed. [2021-11-19 14:15:10,279 INFO L858 garLoopResultBuilder]: For program point L6801-1(line 6801) no Hoare annotation was computed. [2021-11-19 14:15:10,279 INFO L854 garLoopResultBuilder]: At program point L6801(line 6801) the Hoare annotation is: (= |ensure_string_is_allocated_bounded_length_~max_size#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) [2021-11-19 14:15:10,279 INFO L858 garLoopResultBuilder]: For program point L6802-1(line 6802) no Hoare annotation was computed. [2021-11-19 14:15:10,279 INFO L858 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthFINAL(lines 6800 6804) no Hoare annotation was computed. [2021-11-19 14:15:10,279 INFO L861 garLoopResultBuilder]: At program point bounded_mallocENTRY(lines 6882 6887) the Hoare annotation is: true [2021-11-19 14:15:10,280 INFO L858 garLoopResultBuilder]: For program point bounded_mallocFINAL(lines 6882 6887) no Hoare annotation was computed. [2021-11-19 14:15:10,280 INFO L858 garLoopResultBuilder]: For program point bounded_mallocEXIT(lines 6882 6887) no Hoare annotation was computed. [2021-11-19 14:15:10,280 INFO L858 garLoopResultBuilder]: For program point L6883-1(lines 6883 6885) no Hoare annotation was computed. [2021-11-19 14:15:10,280 INFO L854 garLoopResultBuilder]: At program point L6883(lines 6883 6885) the Hoare annotation is: (= bounded_malloc_~size |bounded_malloc_#in~size|) [2021-11-19 14:15:10,280 INFO L858 garLoopResultBuilder]: For program point nondet_boolFINAL(line 261) no Hoare annotation was computed. [2021-11-19 14:15:10,281 INFO L858 garLoopResultBuilder]: For program point nondet_boolEXIT(line 261) no Hoare annotation was computed. [2021-11-19 14:15:10,281 INFO L861 garLoopResultBuilder]: At program point nondet_boolENTRY(line 261) the Hoare annotation is: true [2021-11-19 14:15:10,281 INFO L861 garLoopResultBuilder]: At program point aws_string_bytesENTRY(lines 6242 6246) the Hoare annotation is: true [2021-11-19 14:15:10,281 INFO L858 garLoopResultBuilder]: For program point aws_string_bytesEXIT(lines 6242 6246) no Hoare annotation was computed. [2021-11-19 14:15:10,281 INFO L858 garLoopResultBuilder]: For program point aws_string_bytesFINAL(lines 6242 6246) no Hoare annotation was computed. [2021-11-19 14:15:10,282 INFO L861 garLoopResultBuilder]: At program point L6244-1(line 6244) the Hoare annotation is: true [2021-11-19 14:15:10,282 INFO L858 garLoopResultBuilder]: For program point L6244-2(line 6244) no Hoare annotation was computed. [2021-11-19 14:15:10,282 INFO L861 garLoopResultBuilder]: At program point L6244(line 6244) the Hoare annotation is: true [2021-11-19 14:15:10,282 INFO L858 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2021-11-19 14:15:10,282 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2021-11-19 14:15:10,283 INFO L858 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2021-11-19 14:15:10,283 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2021-11-19 14:15:10,283 INFO L858 garLoopResultBuilder]: For program point can_fail_allocatorFINAL(lines 6889 6891) no Hoare annotation was computed. [2021-11-19 14:15:10,283 INFO L858 garLoopResultBuilder]: For program point can_fail_allocatorEXIT(lines 6889 6891) no Hoare annotation was computed. [2021-11-19 14:15:10,283 INFO L861 garLoopResultBuilder]: At program point can_fail_allocatorENTRY(lines 6889 6891) the Hoare annotation is: true [2021-11-19 14:15:10,284 INFO L861 garLoopResultBuilder]: At program point aws_string_is_validENTRY(lines 6252 6257) the Hoare annotation is: true [2021-11-19 14:15:10,284 INFO L858 garLoopResultBuilder]: For program point L6256-2(line 6256) no Hoare annotation was computed. [2021-11-19 14:15:10,284 INFO L858 garLoopResultBuilder]: For program point L6256(line 6256) no Hoare annotation was computed. [2021-11-19 14:15:10,284 INFO L858 garLoopResultBuilder]: For program point L6256-5(line 6256) no Hoare annotation was computed. [2021-11-19 14:15:10,284 INFO L858 garLoopResultBuilder]: For program point aws_string_is_validFINAL(lines 6252 6257) no Hoare annotation was computed. [2021-11-19 14:15:10,284 INFO L858 garLoopResultBuilder]: For program point L6256-3(line 6256) no Hoare annotation was computed. [2021-11-19 14:15:10,285 INFO L858 garLoopResultBuilder]: For program point aws_string_is_validEXIT(lines 6252 6257) no Hoare annotation was computed. [2021-11-19 14:15:10,285 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tEXIT(line 266) no Hoare annotation was computed. [2021-11-19 14:15:10,285 INFO L861 garLoopResultBuilder]: At program point nondet_uint64_tENTRY(line 266) the Hoare annotation is: true [2021-11-19 14:15:10,285 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tFINAL(line 266) no Hoare annotation was computed. [2021-11-19 14:15:10,285 INFO L858 garLoopResultBuilder]: For program point L7100-1(lines 7099 7112) no Hoare annotation was computed. [2021-11-19 14:15:10,286 INFO L854 garLoopResultBuilder]: At program point L7100(line 7100) the Hoare annotation is: false [2021-11-19 14:15:10,286 INFO L854 garLoopResultBuilder]: At program point L9557(line 9557) the Hoare annotation is: false [2021-11-19 14:15:10,286 INFO L854 garLoopResultBuilder]: At program point L9557-1(line 9557) the Hoare annotation is: false [2021-11-19 14:15:10,286 INFO L858 garLoopResultBuilder]: For program point L9557-2(line 9557) no Hoare annotation was computed. [2021-11-19 14:15:10,286 INFO L858 garLoopResultBuilder]: For program point L9549(lines 9549 9551) no Hoare annotation was computed. [2021-11-19 14:15:10,287 INFO L858 garLoopResultBuilder]: For program point L9553-1(lines 9537 9559) no Hoare annotation was computed. [2021-11-19 14:15:10,287 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-19 14:15:10,287 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-19 14:15:10,287 INFO L858 garLoopResultBuilder]: For program point L9537(lines 9537 9559) no Hoare annotation was computed. [2021-11-19 14:15:10,287 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-19 14:15:10,288 INFO L854 garLoopResultBuilder]: At program point L9554(line 9554) the Hoare annotation is: false [2021-11-19 14:15:10,288 INFO L854 garLoopResultBuilder]: At program point L9554-1(line 9554) the Hoare annotation is: false [2021-11-19 14:15:10,288 INFO L858 garLoopResultBuilder]: For program point L9554-2(line 9554) no Hoare annotation was computed. [2021-11-19 14:15:10,288 INFO L858 garLoopResultBuilder]: For program point L9542-1(lines 9542 9544) no Hoare annotation was computed. [2021-11-19 14:15:10,288 INFO L854 garLoopResultBuilder]: At program point L7110(line 7110) the Hoare annotation is: false [2021-11-19 14:15:10,289 INFO L854 garLoopResultBuilder]: At program point L9542-2(line 9542) the Hoare annotation is: (and (= (_ bv0 64) |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.base|) (= |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.offset| (_ bv0 64))) [2021-11-19 14:15:10,289 INFO L858 garLoopResultBuilder]: For program point L9542-3(lines 9542 9543) no Hoare annotation was computed. [2021-11-19 14:15:10,289 INFO L861 garLoopResultBuilder]: At program point L9538(line 9538) the Hoare annotation is: true [2021-11-19 14:15:10,289 INFO L854 garLoopResultBuilder]: At program point L7106(line 7106) the Hoare annotation is: false [2021-11-19 14:15:10,289 INFO L854 garLoopResultBuilder]: At program point L9542(line 9542) the Hoare annotation is: (and (= (_ bv0 64) |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.base|) (= |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.offset| (_ bv0 64))) [2021-11-19 14:15:10,290 INFO L858 garLoopResultBuilder]: For program point L7110-1(line 7110) no Hoare annotation was computed. [2021-11-19 14:15:10,290 INFO L858 garLoopResultBuilder]: For program point L9538-5(lines 9538 9539) no Hoare annotation was computed. [2021-11-19 14:15:10,290 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-19 14:15:10,290 INFO L858 garLoopResultBuilder]: For program point L7106-1(line 7106) no Hoare annotation was computed. [2021-11-19 14:15:10,290 INFO L858 garLoopResultBuilder]: For program point L9538-1(lines 9538 9539) no Hoare annotation was computed. [2021-11-19 14:15:10,291 INFO L858 garLoopResultBuilder]: For program point L9542-5(lines 9542 9543) no Hoare annotation was computed. [2021-11-19 14:15:10,291 INFO L861 garLoopResultBuilder]: At program point L9538-2(line 9538) the Hoare annotation is: true [2021-11-19 14:15:10,291 INFO L858 garLoopResultBuilder]: For program point L9538-3(line 9538) no Hoare annotation was computed. [2021-11-19 14:15:10,291 INFO L858 garLoopResultBuilder]: For program point L9542-7(lines 9542 9544) no Hoare annotation was computed. [2021-11-19 14:15:10,291 INFO L854 garLoopResultBuilder]: At program point L9547(line 9547) the Hoare annotation is: (and (= (_ bv0 64) |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.base|) (= |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.offset| (_ bv0 64)) (= |ULTIMATE.start_aws_string_compare_harness_~str_b~1#1.offset| (_ bv0 64)) (= (_ bv0 64) |ULTIMATE.start_aws_string_compare_harness_~str_b~1#1.base|)) [2021-11-19 14:15:10,292 INFO L858 garLoopResultBuilder]: For program point L9547-1(line 9547) no Hoare annotation was computed. [2021-11-19 14:15:10,292 INFO L858 garLoopResultBuilder]: For program point L7107-1(lines 7107 7109) no Hoare annotation was computed. [2021-11-19 14:15:10,292 INFO L854 garLoopResultBuilder]: At program point L7107(lines 7107 7109) the Hoare annotation is: false [2021-11-19 14:15:10,292 INFO L858 garLoopResultBuilder]: For program point L7099(lines 7099 7112) no Hoare annotation was computed. [2021-11-19 14:15:10,292 INFO L861 garLoopResultBuilder]: At program point L9560(line 9560) the Hoare annotation is: true [2021-11-19 14:15:10,292 INFO L858 garLoopResultBuilder]: For program point L9548(line 9548) no Hoare annotation was computed. [2021-11-19 14:15:10,293 INFO L854 garLoopResultBuilder]: At program point L9548-2(line 9548) the Hoare annotation is: (and (= (_ bv0 64) |ULTIMATE.start_aws_string_compare_harness_#t~ite1354#1.offset|) (= (_ bv0 64) |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.base|) (= |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.offset| (_ bv0 64)) (= (_ bv0 64) |ULTIMATE.start_aws_string_compare_harness_#t~ite1354#1.base|) (= |ULTIMATE.start_aws_string_compare_harness_~str_b~1#1.offset| (_ bv0 64)) (= (_ bv0 64) |ULTIMATE.start_aws_string_compare_harness_~str_b~1#1.base|)) [2021-11-19 14:15:10,293 INFO L858 garLoopResultBuilder]: For program point L9548-3(lines 9548 9552) no Hoare annotation was computed. [2021-11-19 14:15:10,293 INFO L861 garLoopResultBuilder]: At program point L9544(line 9544) the Hoare annotation is: true [2021-11-19 14:15:10,293 INFO L858 garLoopResultBuilder]: For program point L9548-4(lines 9537 9559) no Hoare annotation was computed. [2021-11-19 14:15:10,293 INFO L858 garLoopResultBuilder]: For program point L9544-1(line 9544) no Hoare annotation was computed. [2021-11-19 14:15:10,294 INFO L858 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2021-11-19 14:15:10,294 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2021-11-19 14:15:10,294 INFO L858 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2021-11-19 14:15:10,294 INFO L858 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2021-11-19 14:15:10,294 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2021-11-19 14:15:10,295 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2021-11-19 14:15:10,295 INFO L861 garLoopResultBuilder]: At program point aws_string_compareENTRY(lines 9218 9252) the Hoare annotation is: true [2021-11-19 14:15:10,295 INFO L858 garLoopResultBuilder]: For program point L9239-2(line 9239) no Hoare annotation was computed. [2021-11-19 14:15:10,295 INFO L854 garLoopResultBuilder]: At program point L9239(line 9239) the Hoare annotation is: (or (not (= |aws_string_compare_#in~a.offset| |aws_string_compare_#in~b.offset|)) (not (= |aws_string_compare_#in~a.base| |aws_string_compare_#in~b.base|)) (not (= (_ bv0 64) |aws_string_compare_#in~a.base|)) (not (= |aws_string_compare_#in~a.offset| (_ bv0 64)))) [2021-11-19 14:15:10,295 INFO L854 garLoopResultBuilder]: At program point L9239-1(line 9239) the Hoare annotation is: (or (not (= |aws_string_compare_#in~a.offset| |aws_string_compare_#in~b.offset|)) (not (= |aws_string_compare_#in~a.base| |aws_string_compare_#in~b.base|)) (not (= (_ bv0 64) |aws_string_compare_#in~a.base|)) (not (= |aws_string_compare_#in~a.offset| (_ bv0 64)))) [2021-11-19 14:15:10,296 INFO L858 garLoopResultBuilder]: For program point L9219(line 9219) no Hoare annotation was computed. [2021-11-19 14:15:10,296 INFO L854 garLoopResultBuilder]: At program point L9219-2(line 9219) the Hoare annotation is: (or (not (= (_ bv0 64) |aws_string_compare_#in~b.base|)) (and (= (_ bv0 64) aws_string_compare_~b.base) (= aws_string_compare_~b.offset (_ bv0 64)) (= (_ bv0 64) aws_string_compare_~a.offset) (= (_ bv0 64) aws_string_compare_~a.base)) (not (= (_ bv0 64) |aws_string_compare_#in~a.base|)) (not (= (_ bv0 64) |aws_string_compare_#in~b.offset|)) (not (= |aws_string_compare_#in~a.offset| (_ bv0 64)))) [2021-11-19 14:15:10,296 INFO L858 garLoopResultBuilder]: For program point L9219-3(line 9219) no Hoare annotation was computed. [2021-11-19 14:15:10,296 INFO L858 garLoopResultBuilder]: For program point L9248(lines 9248 9250) no Hoare annotation was computed. [2021-11-19 14:15:10,296 INFO L854 garLoopResultBuilder]: At program point L9219-4(line 9219) the Hoare annotation is: (or (not (= (_ bv0 64) |aws_string_compare_#in~b.base|)) (and (= (_ bv0 64) aws_string_compare_~b.base) (= aws_string_compare_~b.offset (_ bv0 64)) (= (_ bv0 64) aws_string_compare_~a.offset) (= (_ bv0 64) aws_string_compare_~a.base)) (not (= (_ bv0 64) |aws_string_compare_#in~a.base|)) (not (= (_ bv0 64) |aws_string_compare_#in~b.offset|)) (not (= |aws_string_compare_#in~a.offset| (_ bv0 64)))) [2021-11-19 14:15:10,297 INFO L858 garLoopResultBuilder]: For program point L9219-5(line 9219) no Hoare annotation was computed. [2021-11-19 14:15:10,297 INFO L854 garLoopResultBuilder]: At program point L9240(line 9240) the Hoare annotation is: (or (not (= |aws_string_compare_#in~a.offset| |aws_string_compare_#in~b.offset|)) (not (= |aws_string_compare_#in~a.base| |aws_string_compare_#in~b.base|)) (not (= (_ bv0 64) |aws_string_compare_#in~a.base|)) (not (= |aws_string_compare_#in~a.offset| (_ bv0 64)))) [2021-11-19 14:15:10,297 INFO L854 garLoopResultBuilder]: At program point L9240-1(line 9240) the Hoare annotation is: (or (not (= |aws_string_compare_#in~a.offset| |aws_string_compare_#in~b.offset|)) (not (= |aws_string_compare_#in~a.base| |aws_string_compare_#in~b.base|)) (not (= (_ bv0 64) |aws_string_compare_#in~a.base|)) (not (= |aws_string_compare_#in~a.offset| (_ bv0 64)))) [2021-11-19 14:15:10,297 INFO L858 garLoopResultBuilder]: For program point L9240-2(line 9240) no Hoare annotation was computed. [2021-11-19 14:15:10,297 INFO L858 garLoopResultBuilder]: For program point L9220(line 9220) no Hoare annotation was computed. [2021-11-19 14:15:10,298 INFO L854 garLoopResultBuilder]: At program point L9220-2(line 9220) the Hoare annotation is: (or (not (= (_ bv0 64) |aws_string_compare_#in~b.base|)) (and (= (_ bv0 64) aws_string_compare_~b.base) (= aws_string_compare_~b.offset (_ bv0 64)) (= (_ bv0 64) aws_string_compare_~a.offset) (= (_ bv0 64) aws_string_compare_~a.base)) (not (= (_ bv0 64) |aws_string_compare_#in~a.base|)) (not (= (_ bv0 64) |aws_string_compare_#in~b.offset|)) (not (= |aws_string_compare_#in~a.offset| (_ bv0 64)))) [2021-11-19 14:15:10,298 INFO L858 garLoopResultBuilder]: For program point L9224(lines 9224 9228) no Hoare annotation was computed. [2021-11-19 14:15:10,298 INFO L858 garLoopResultBuilder]: For program point L9245(lines 9245 9247) no Hoare annotation was computed. [2021-11-19 14:15:10,298 INFO L858 garLoopResultBuilder]: For program point L9220-3(line 9220) no Hoare annotation was computed. [2021-11-19 14:15:10,298 INFO L854 garLoopResultBuilder]: At program point L9220-4(line 9220) the Hoare annotation is: (or (not (= (_ bv0 64) |aws_string_compare_#in~b.base|)) (and (= (_ bv0 64) aws_string_compare_~b.base) (= aws_string_compare_~b.offset (_ bv0 64)) (= (_ bv0 64) aws_string_compare_~a.offset) (= (_ bv0 64) aws_string_compare_~a.base)) (not (= (_ bv0 64) |aws_string_compare_#in~a.base|)) (not (= (_ bv0 64) |aws_string_compare_#in~b.offset|)) (not (= |aws_string_compare_#in~a.offset| (_ bv0 64)))) [2021-11-19 14:15:10,299 INFO L858 garLoopResultBuilder]: For program point L9220-5(line 9220) no Hoare annotation was computed. [2021-11-19 14:15:10,299 INFO L858 garLoopResultBuilder]: For program point L9237(line 9237) no Hoare annotation was computed. [2021-11-19 14:15:10,299 INFO L858 garLoopResultBuilder]: For program point L9237-2(line 9237) no Hoare annotation was computed. [2021-11-19 14:15:10,299 INFO L854 garLoopResultBuilder]: At program point L9241(line 9241) the Hoare annotation is: (or (not (= |aws_string_compare_#in~a.offset| |aws_string_compare_#in~b.offset|)) (not (= |aws_string_compare_#in~a.base| |aws_string_compare_#in~b.base|)) (not (= (_ bv0 64) |aws_string_compare_#in~a.base|)) (not (= |aws_string_compare_#in~a.offset| (_ bv0 64)))) [2021-11-19 14:15:10,299 INFO L854 garLoopResultBuilder]: At program point L9241-1(line 9241) the Hoare annotation is: (or (not (= |aws_string_compare_#in~a.offset| |aws_string_compare_#in~b.offset|)) (not (= |aws_string_compare_#in~a.base| |aws_string_compare_#in~b.base|)) (not (= (_ bv0 64) |aws_string_compare_#in~a.base|)) (not (= |aws_string_compare_#in~a.offset| (_ bv0 64)))) [2021-11-19 14:15:10,299 INFO L858 garLoopResultBuilder]: For program point L9241-2(line 9241) no Hoare annotation was computed. [2021-11-19 14:15:10,300 INFO L858 garLoopResultBuilder]: For program point L9229(lines 9229 9233) no Hoare annotation was computed. [2021-11-19 14:15:10,300 INFO L858 garLoopResultBuilder]: For program point L9221(lines 9221 9223) no Hoare annotation was computed. [2021-11-19 14:15:10,300 INFO L858 garLoopResultBuilder]: For program point L9242(lines 9242 9244) no Hoare annotation was computed. [2021-11-19 14:15:10,300 INFO L858 garLoopResultBuilder]: For program point aws_string_compareEXIT(lines 9218 9252) no Hoare annotation was computed. [2021-11-19 14:15:10,300 INFO L858 garLoopResultBuilder]: For program point aws_string_compareFINAL(lines 9218 9252) no Hoare annotation was computed. [2021-11-19 14:15:10,304 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:10,306 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 14:15:10,312 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] [2021-11-19 14:15:10,313 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] [2021-11-19 14:15:10,318 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] [2021-11-19 14:15:10,319 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] [2021-11-19 14:15:10,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:15:10 BoogieIcfgContainer [2021-11-19 14:15:10,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 14:15:10,321 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 14:15:10,321 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 14:15:10,321 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 14:15:10,322 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:14:44" (3/4) ... [2021-11-19 14:15:10,325 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-19 14:15:10,333 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ensure_string_is_allocated_bounded_length [2021-11-19 14:15:10,333 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure bounded_malloc [2021-11-19 14:15:10,333 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2021-11-19 14:15:10,333 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_bool [2021-11-19 14:15:10,334 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_bytes [2021-11-19 14:15:10,334 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-19 14:15:10,334 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-19 14:15:10,335 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_compare [2021-11-19 14:15:10,335 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure can_fail_allocator [2021-11-19 14:15:10,335 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_is_valid [2021-11-19 14:15:10,373 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 125 nodes and edges [2021-11-19 14:15:10,376 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 57 nodes and edges [2021-11-19 14:15:10,379 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2021-11-19 14:15:10,381 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-19 14:15:10,383 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-19 14:15:10,386 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-19 14:15:10,388 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-19 14:15:10,390 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-19 14:15:10,446 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1 : bv64 :: ~bvult64(ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1, \old(max_size)) && ~bvule64(~bvadd16(9223372036853541257bv64, ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1), 36028797018963967bv64)) [2021-11-19 14:15:11,383 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 14:15:11,383 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 14:15:11,384 INFO L158 Benchmark]: Toolchain (without parser) took 36925.77ms. Allocated memory was 71.3MB in the beginning and 218.1MB in the end (delta: 146.8MB). Free memory was 45.6MB in the beginning and 72.5MB in the end (delta: -26.9MB). Peak memory consumption was 167.1MB. Max. memory is 16.1GB. [2021-11-19 14:15:11,385 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 71.3MB. Free memory is still 53.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:15:11,385 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4595.34ms. Allocated memory was 71.3MB in the beginning and 180.4MB in the end (delta: 109.1MB). Free memory was 45.4MB in the beginning and 120.2MB in the end (delta: -74.8MB). Peak memory consumption was 72.2MB. Max. memory is 16.1GB. [2021-11-19 14:15:11,386 INFO L158 Benchmark]: Boogie Procedure Inliner took 412.68ms. Allocated memory is still 180.4MB. Free memory was 120.2MB in the beginning and 109.7MB in the end (delta: 10.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 14:15:11,386 INFO L158 Benchmark]: Boogie Preprocessor took 125.90ms. Allocated memory is still 180.4MB. Free memory was 109.7MB in the beginning and 102.2MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 14:15:11,387 INFO L158 Benchmark]: RCFGBuilder took 4952.53ms. Allocated memory is still 180.4MB. Free memory was 102.2MB in the beginning and 115.9MB in the end (delta: -13.7MB). Peak memory consumption was 61.7MB. Max. memory is 16.1GB. [2021-11-19 14:15:11,387 INFO L158 Benchmark]: TraceAbstraction took 25769.77ms. Allocated memory was 180.4MB in the beginning and 218.1MB in the end (delta: 37.7MB). Free memory was 115.9MB in the beginning and 103.7MB in the end (delta: 12.3MB). Peak memory consumption was 50.0MB. Max. memory is 16.1GB. [2021-11-19 14:15:11,388 INFO L158 Benchmark]: Witness Printer took 1062.51ms. Allocated memory is still 218.1MB. Free memory was 103.7MB in the beginning and 72.5MB in the end (delta: 31.2MB). Peak memory consumption was 78.5MB. Max. memory is 16.1GB. [2021-11-19 14:15:11,390 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 71.3MB. Free memory is still 53.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4595.34ms. Allocated memory was 71.3MB in the beginning and 180.4MB in the end (delta: 109.1MB). Free memory was 45.4MB in the beginning and 120.2MB in the end (delta: -74.8MB). Peak memory consumption was 72.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 412.68ms. Allocated memory is still 180.4MB. Free memory was 120.2MB in the beginning and 109.7MB in the end (delta: 10.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 125.90ms. Allocated memory is still 180.4MB. Free memory was 109.7MB in the beginning and 102.2MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 4952.53ms. Allocated memory is still 180.4MB. Free memory was 102.2MB in the beginning and 115.9MB in the end (delta: -13.7MB). Peak memory consumption was 61.7MB. Max. memory is 16.1GB. * TraceAbstraction took 25769.77ms. Allocated memory was 180.4MB in the beginning and 218.1MB in the end (delta: 37.7MB). Free memory was 115.9MB in the beginning and 103.7MB in the end (delta: 12.3MB). Peak memory consumption was 50.0MB. Max. memory is 16.1GB. * Witness Printer took 1062.51ms. Allocated memory is still 218.1MB. Free memory was 103.7MB in the beginning and 72.5MB in the end (delta: 31.2MB). Peak memory consumption was 78.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 223]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 124 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 25.6s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 140 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 122 mSDsluCounter, 6472 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 39 IncrementalHoareTripleChecker+Unchecked, 5081 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 446 IncrementalHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 1391 mSDtfsCounter, 446 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1401 GetRequests, 1319 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161occurred in iteration=5, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 26 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 45 LocationsWithAnnotation, 306 PreInvPairs, 330 NumberOfFragments, 351 HoareAnnotationTreeSize, 306 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 45 FomulaSimplificationsInter, 384 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 6.9s SatisfiabilityAnalysisTime, 11.4s InterpolantComputationTime, 701 NumberOfCodeBlocks, 701 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1382 ConstructedInterpolants, 20 QuantifiedInterpolants, 2846 SizeOfPredicates, 38 NumberOfNonLiveVariables, 14178 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 20 InterpolantComputations, 17 PerfectInterpolantSequences, 706/732 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6806]: Loop Invariant [2021-11-19 14:15:11,400 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] [2021-11-19 14:15:11,401 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] [2021-11-19 14:15:11,401 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] [2021-11-19 14:15:11,401 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] Derived loop invariant: (\exists ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1 : bv64 :: ~bvult64(ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1, \old(max_size)) && ~bvule64(~bvadd16(9223372036853541257bv64, ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1), 36028797018963967bv64)) - InvariantResult [Line: 9560]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-19 14:15:11,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03c1bc5-d2f8-466b-9720-a1bf6916c4a5/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE