./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF --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 f85fffa00ce152c2185c303de3856b218143afacade5a3da3d11c284e86ce457 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:47:21,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:47:21,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:47:21,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:47:21,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:47:21,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:47:21,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:47:21,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:47:21,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:47:21,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:47:21,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:47:21,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:47:21,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:47:21,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:47:21,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:47:21,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:47:21,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:47:21,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:47:21,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:47:21,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:47:21,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:47:21,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:47:21,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:47:21,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:47:21,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:47:21,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:47:21,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:47:21,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:47:21,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:47:21,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:47:21,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:47:21,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:47:21,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:47:21,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:47:21,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:47:21,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:47:21,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:47:21,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:47:21,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:47:21,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:47:21,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:47:21,737 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:47:21,783 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:47:21,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:47:21,784 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:47:21,784 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:47:21,785 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:47:21,785 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:47:21,785 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:47:21,785 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:47:21,786 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:47:21,786 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:47:21,786 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:47:21,786 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:47:21,787 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:47:21,787 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:47:21,787 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:47:21,788 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:47:21,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:47:21,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:47:21,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:47:21,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:47:21,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:47:21,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:47:21,790 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:47:21,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:47:21,790 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:47:21,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:47:21,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:47:21,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:47:21,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:47:21,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:47:21,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:47:21,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:47:21,804 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:47:21,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:47:21,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:47:21,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:47:21,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:47:21,805 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_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f85fffa00ce152c2185c303de3856b218143afacade5a3da3d11c284e86ce457 [2021-11-12 23:47:22,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:47:22,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:47:22,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:47:22,187 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:47:22,188 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:47:22,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i [2021-11-12 23:47:22,287 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/data/47e518ce1/b903492e97c541aabf638fa51b8de7ab/FLAGd3f72be8b [2021-11-12 23:47:23,328 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:47:23,331 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i [2021-11-12 23:47:23,387 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/data/47e518ce1/b903492e97c541aabf638fa51b8de7ab/FLAGd3f72be8b [2021-11-12 23:47:23,710 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/data/47e518ce1/b903492e97c541aabf638fa51b8de7ab [2021-11-12 23:47:23,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:47:23,716 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:47:23,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:47:23,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:47:23,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:47:23,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:47:23" (1/1) ... [2021-11-12 23:47:23,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@871611d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:23, skipping insertion in model container [2021-11-12 23:47:23,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:47:23" (1/1) ... [2021-11-12 23:47:23,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:47:23,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:47:24,292 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i[4505,4518] [2021-11-12 23:47:24,303 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i[4565,4578] [2021-11-12 23:47:24,340 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:47:24,351 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:47:25,589 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:25,590 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:25,591 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:25,592 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:25,594 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:25,613 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:25,614 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:25,617 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:25,617 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:26,222 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:47:26,224 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:47:26,226 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:47:26,228 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:47:26,239 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:47:26,241 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:47:26,242 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:47:26,244 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:47:26,248 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:47:26,251 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:47:26,512 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:47:26,662 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:26,663 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:26,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:47:26,819 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) [2021-11-12 23:47:26,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@78ed4675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:26, skipping insertion in model container [2021-11-12 23:47:26,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:47:26,820 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:47:26,823 INFO L158 Benchmark]: Toolchain (without parser) took 3106.00ms. Allocated memory is still 104.9MB. Free memory was 76.8MB in the beginning and 54.7MB in the end (delta: 22.1MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. [2021-11-12 23:47:26,823 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 86.0MB. Free memory was 65.9MB in the beginning and 65.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:47:26,824 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3103.05ms. Allocated memory is still 104.9MB. Free memory was 76.4MB in the beginning and 55.2MB in the end (delta: 21.2MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. [2021-11-12 23:47:26,826 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 86.0MB. Free memory was 65.9MB in the beginning and 65.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3103.05ms. Allocated memory is still 104.9MB. Free memory was 76.4MB in the beginning and 55.2MB in the end (delta: 21.2MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6990]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF --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 f85fffa00ce152c2185c303de3856b218143afacade5a3da3d11c284e86ce457 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:47:29,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:47:29,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:47:29,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:47:29,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:47:29,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:47:29,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:47:29,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:47:29,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:47:29,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:47:29,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:47:29,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:47:29,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:47:29,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:47:29,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:47:29,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:47:29,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:47:29,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:47:29,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:47:29,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:47:29,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:47:29,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:47:29,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:47:29,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:47:29,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:47:29,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:47:29,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:47:29,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:47:29,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:47:29,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:47:29,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:47:29,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:47:29,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:47:29,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:47:29,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:47:29,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:47:29,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:47:29,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:47:29,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:47:29,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:47:29,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:47:29,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:47:29,798 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:47:29,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:47:29,801 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:47:29,802 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:47:29,802 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:47:29,802 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:47:29,802 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:47:29,803 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:47:29,803 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:47:29,803 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:47:29,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:47:29,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:47:29,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:47:29,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:47:29,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:47:29,808 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:47:29,808 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:47:29,808 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:47:29,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:47:29,809 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:47:29,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:47:29,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:47:29,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:47:29,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:47:29,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:47:29,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:47:29,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:47:29,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:47:29,812 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:47:29,812 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:47:29,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:47:29,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:47:29,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:47:29,813 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_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f85fffa00ce152c2185c303de3856b218143afacade5a3da3d11c284e86ce457 [2021-11-12 23:47:30,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:47:30,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:47:30,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:47:30,295 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:47:30,297 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:47:30,299 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i [2021-11-12 23:47:30,394 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/data/2d24a40f0/170efa086e43410d94a5c489bb425a33/FLAG87df8b2ff [2021-11-12 23:47:31,594 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:47:31,595 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i [2021-11-12 23:47:31,656 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/data/2d24a40f0/170efa086e43410d94a5c489bb425a33/FLAG87df8b2ff [2021-11-12 23:47:31,926 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/data/2d24a40f0/170efa086e43410d94a5c489bb425a33 [2021-11-12 23:47:31,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:47:31,931 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:47:31,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:47:31,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:47:31,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:47:31,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:47:31" (1/1) ... [2021-11-12 23:47:31,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18b07a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:31, skipping insertion in model container [2021-11-12 23:47:31,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:47:31" (1/1) ... [2021-11-12 23:47:31,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:47:32,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:47:32,454 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i[4505,4518] [2021-11-12 23:47:32,464 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i[4565,4578] [2021-11-12 23:47:32,504 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:47:32,513 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:47:33,755 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:33,756 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:33,757 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:33,758 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:33,760 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:33,780 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:33,781 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:33,783 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:33,784 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:34,256 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:47:34,258 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:47:34,260 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:47:34,261 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:47:34,263 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:47:34,264 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:47:34,265 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:47:34,266 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:47:34,267 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:47:34,268 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:47:34,481 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:47:34,638 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:34,638 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:34,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:47:34,879 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:47:34,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:47:34,952 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i[4505,4518] [2021-11-12 23:47:34,953 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i[4565,4578] [2021-11-12 23:47:34,955 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:47:34,959 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:47:35,042 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:35,042 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:35,043 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:35,043 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:35,044 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:35,053 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:35,054 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:35,055 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:35,056 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:35,129 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:47:35,131 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:47:35,131 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:47:35,133 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:47:35,134 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:47:35,135 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:47:35,135 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:47:35,136 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:47:35,137 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:47:35,137 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:47:35,182 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:47:35,307 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:35,307 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:35,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:47:35,429 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:47:35,465 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i[4505,4518] [2021-11-12 23:47:35,466 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i[4565,4578] [2021-11-12 23:47:35,467 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:47:35,468 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:47:35,519 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:35,520 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:35,520 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:35,521 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:35,522 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:35,530 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:35,530 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:35,531 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:35,532 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:35,571 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:47:35,572 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:47:35,573 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:47:35,574 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:47:35,575 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:47:35,576 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:47:35,576 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:47:35,577 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:47:35,578 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:47:35,578 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:47:35,642 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:47:35,737 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:35,738 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:47:35,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:47:36,130 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:47:36,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:36 WrapperNode [2021-11-12 23:47:36,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:47:36,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:47:36,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:47:36,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:47:36,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:36" (1/1) ... [2021-11-12 23:47:36,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:36" (1/1) ... [2021-11-12 23:47:36,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:47:36,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:47:36,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:47:36,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:47:36,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:36" (1/1) ... [2021-11-12 23:47:36,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:36" (1/1) ... [2021-11-12 23:47:36,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:36" (1/1) ... [2021-11-12 23:47:36,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:36" (1/1) ... [2021-11-12 23:47:36,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:36" (1/1) ... [2021-11-12 23:47:36,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:36" (1/1) ... [2021-11-12 23:47:36,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:36" (1/1) ... [2021-11-12 23:47:36,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:47:36,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:47:36,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:47:36,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:47:36,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:36" (1/1) ... [2021-11-12 23:47:36,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:47:36,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:47:36,782 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:47:36,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:47:36,846 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-12 23:47:36,846 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-12 23:47:36,846 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~uint8_t~0~TO~C_BOOL [2021-11-12 23:47:36,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~uint8_t~0~TO~C_BOOL [2021-11-12 23:47:36,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:47:36,847 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 23:47:36,847 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 23:47:36,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:47:36,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:47:36,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:47:36,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:47:36,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:47:36,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:47:36,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:47:36,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:47:36,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:47:36,851 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 23:47:36,851 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 23:47:36,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:47:36,851 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-12 23:47:36,852 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-12 23:47:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:47:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:47:36,852 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:47:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:47:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:47:36,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:47:36,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:47:36,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:47:36,853 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_right_trim_pred [2021-11-12 23:47:36,853 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_right_trim_pred [2021-11-12 23:47:53,259 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:47:53,260 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:47:53,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:47:53 BoogieIcfgContainer [2021-11-12 23:47:53,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:47:53,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:47:53,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:47:53,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:47:53,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:47:31" (1/3) ... [2021-11-12 23:47:53,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691b2d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:47:53, skipping insertion in model container [2021-11-12 23:47:53,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:36" (2/3) ... [2021-11-12 23:47:53,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691b2d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:47:53, skipping insertion in model container [2021-11-12 23:47:53,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:47:53" (3/3) ... [2021-11-12 23:47:53,276 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_right_trim_pred_harness.i [2021-11-12 23:47:53,281 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:47:53,282 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:47:53,350 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:47:53,357 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 [2021-11-12 23:47:53,363 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:47:53,385 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 64 states have internal predecessors, (78), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-12 23:47:53,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-12 23:47:53,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:53,397 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:47:53,397 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:47:53,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:53,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1215746245, now seen corresponding path program 1 times [2021-11-12 23:47:53,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:53,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228961908] [2021-11-12 23:47:53,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:53,426 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:53,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:53,435 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:53,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:47:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:57,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 1807 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:47:57,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:57,755 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-12 23:47:57,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:57,902 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-12 23:47:57,903 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:57,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228961908] [2021-11-12 23:47:57,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228961908] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:57,904 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:47:57,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:47:57,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690733761] [2021-11-12 23:47:57,907 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:57,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:47:57,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:57,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:47:57,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:47:57,939 INFO L87 Difference]: Start difference. First operand has 95 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 64 states have internal predecessors, (78), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 23:47:57,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:57,970 INFO L93 Difference]: Finished difference Result 186 states and 253 transitions. [2021-11-12 23:47:57,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:47:57,972 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 61 [2021-11-12 23:47:57,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:57,981 INFO L225 Difference]: With dead ends: 186 [2021-11-12 23:47:57,981 INFO L226 Difference]: Without dead ends: 86 [2021-11-12 23:47:57,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:47:57,989 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.62ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:57,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 1.62ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:47:58,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-12 23:47:58,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-11-12 23:47:58,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 57 states have internal predecessors, (66), 22 states have call successors, (22), 8 states have call predecessors, (22), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-12 23:47:58,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2021-11-12 23:47:58,034 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 61 [2021-11-12 23:47:58,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:58,034 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2021-11-12 23:47:58,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 23:47:58,035 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2021-11-12 23:47:58,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-12 23:47:58,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:58,038 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:47:58,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:58,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:47:58,252 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:47:58,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:58,252 INFO L85 PathProgramCache]: Analyzing trace with hash 121767508, now seen corresponding path program 1 times [2021-11-12 23:47:58,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:58,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909346751] [2021-11-12 23:47:58,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:58,261 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:58,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:58,262 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:58,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:48:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:48:02,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 1810 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:48:02,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:48:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-12 23:48:02,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:48:03,081 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-12 23:48:03,081 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:48:03,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909346751] [2021-11-12 23:48:03,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909346751] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:48:03,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:48:03,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 23:48:03,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167021614] [2021-11-12 23:48:03,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:48:03,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:48:03,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:48:03,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:48:03,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:48:03,084 INFO L87 Difference]: Start difference. First operand 86 states and 108 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 23:48:03,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:48:03,328 INFO L93 Difference]: Finished difference Result 155 states and 200 transitions. [2021-11-12 23:48:03,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:48:03,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2021-11-12 23:48:03,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:48:03,333 INFO L225 Difference]: With dead ends: 155 [2021-11-12 23:48:03,333 INFO L226 Difference]: Without dead ends: 89 [2021-11-12 23:48:03,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:48:03,335 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 27 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 173.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.30ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 214.42ms IncrementalHoareTripleChecker+Time [2021-11-12 23:48:03,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 341 Invalid, 48 Unknown, 0 Unchecked, 5.30ms Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 214.42ms Time] [2021-11-12 23:48:03,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-11-12 23:48:03,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-11-12 23:48:03,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 60 states have internal predecessors, (68), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (24), 20 states have call predecessors, (24), 20 states have call successors, (24) [2021-11-12 23:48:03,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 114 transitions. [2021-11-12 23:48:03,367 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 114 transitions. Word has length 63 [2021-11-12 23:48:03,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:48:03,368 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 114 transitions. [2021-11-12 23:48:03,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 23:48:03,369 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 114 transitions. [2021-11-12 23:48:03,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 23:48:03,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:48:03,378 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2021-11-12 23:48:03,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:48:03,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:48:03,602 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:48:03,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:48:03,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1486959695, now seen corresponding path program 1 times [2021-11-12 23:48:03,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:48:03,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480296216] [2021-11-12 23:48:03,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:48:03,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:48:03,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:48:03,611 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:48:03,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:48:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:48:07,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 1814 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:48:07,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:48:08,225 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-12 23:48:08,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:48:08,666 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-12 23:48:08,666 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:48:08,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480296216] [2021-11-12 23:48:08,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480296216] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:48:08,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:48:08,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2021-11-12 23:48:08,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862351146] [2021-11-12 23:48:08,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:48:08,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:48:08,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:48:08,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:48:08,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:48:08,669 INFO L87 Difference]: Start difference. First operand 89 states and 114 transitions. Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-12 23:48:08,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:48:08,969 INFO L93 Difference]: Finished difference Result 148 states and 189 transitions. [2021-11-12 23:48:08,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:48:08,970 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 65 [2021-11-12 23:48:08,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:48:08,972 INFO L225 Difference]: With dead ends: 148 [2021-11-12 23:48:08,972 INFO L226 Difference]: Without dead ends: 89 [2021-11-12 23:48:08,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:48:08,974 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 47 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 228.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.45ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 252.43ms IncrementalHoareTripleChecker+Time [2021-11-12 23:48:08,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 418 Invalid, 70 Unknown, 0 Unchecked, 4.45ms Time], IncrementalHoareTripleChecker [19 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 252.43ms Time] [2021-11-12 23:48:08,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-11-12 23:48:08,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-11-12 23:48:08,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 60 states have internal predecessors, (68), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 20 states have call predecessors, (22), 20 states have call successors, (22) [2021-11-12 23:48:08,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 112 transitions. [2021-11-12 23:48:08,985 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 112 transitions. Word has length 65 [2021-11-12 23:48:08,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:48:08,986 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 112 transitions. [2021-11-12 23:48:08,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-12 23:48:08,986 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 112 transitions. [2021-11-12 23:48:08,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-12 23:48:08,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:48:08,988 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:48:09,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:48:09,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:48:09,204 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:48:09,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:48:09,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1438008465, now seen corresponding path program 1 times [2021-11-12 23:48:09,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:48:09,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1831147264] [2021-11-12 23:48:09,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:48:09,208 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:48:09,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:48:09,209 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:48:09,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ed909b7-e481-4a71-841d-dec361c7965a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:48:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:48:13,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 1822 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-12 23:48:13,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:48:17,854 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-12 23:48:17,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:48:34,237 WARN L227 SmtUtils]: Spent 11.44s on a formula simplification. DAG size of input: 523 DAG size of output: 269 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 23:48:34,245 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-12 23:48:34,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 128 treesize of output 771