./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_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_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/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_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/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_14b6ae96-8e4e-4d69-9598-8be433061070/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 caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:29:37,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:29:37,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:29:37,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:29:37,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:29:37,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:29:37,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:29:37,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:29:37,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:29:37,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:29:37,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:29:37,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:29:37,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:29:37,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:29:37,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:29:37,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:29:37,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:29:37,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:29:37,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:29:37,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:29:37,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:29:37,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:29:38,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:29:38,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:29:38,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:29:38,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:29:38,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:29:38,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:29:38,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:29:38,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:29:38,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:29:38,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:29:38,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:29:38,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:29:38,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:29:38,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:29:38,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:29:38,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:29:38,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:29:38,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:29:38,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:29:38,034 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:29:38,088 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:29:38,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:29:38,091 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:29:38,091 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:29:38,091 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:29:38,092 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:29:38,092 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:29:38,092 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:29:38,092 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:29:38,093 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:29:38,102 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:29:38,102 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:29:38,102 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:29:38,103 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:29:38,103 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:29:38,103 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:29:38,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:29:38,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:29:38,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:29:38,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:29:38,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:29:38,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:29:38,106 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:29:38,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:29:38,106 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:29:38,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:29:38,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:29:38,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:29:38,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:29:38,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:29:38,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:29:38,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:29:38,109 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:29:38,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:29:38,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:29:38,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:29:38,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:29:38,110 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_14b6ae96-8e4e-4d69-9598-8be433061070/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a [2021-11-19 14:29:38,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:29:38,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:29:38,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:29:38,503 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:29:38,504 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:29:38,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i [2021-11-19 14:29:38,593 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/data/79f1d7042/38f369d589184bc4ab41240ecc9a5754/FLAGdb17bd92c [2021-11-19 14:29:39,657 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:29:39,658 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i [2021-11-19 14:29:39,723 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/data/79f1d7042/38f369d589184bc4ab41240ecc9a5754/FLAGdb17bd92c [2021-11-19 14:29:39,995 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/data/79f1d7042/38f369d589184bc4ab41240ecc9a5754 [2021-11-19 14:29:39,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:29:39,999 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:29:40,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:29:40,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:29:40,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:29:40,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:29:39" (1/1) ... [2021-11-19 14:29:40,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca35b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:40, skipping insertion in model container [2021-11-19 14:29:40,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:29:39" (1/1) ... [2021-11-19 14:29:40,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:29:40,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:29:40,525 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_14b6ae96-8e4e-4d69-9598-8be433061070/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4499,4512] [2021-11-19 14:29:40,534 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_14b6ae96-8e4e-4d69-9598-8be433061070/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4559,4572] [2021-11-19 14:29:40,564 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:29:40,572 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:29:41,780 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:41,781 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:41,782 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:41,783 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:41,785 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:41,802 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:41,803 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:41,805 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:41,806 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:42,359 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:29:42,361 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:29:42,362 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:29:42,364 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:29:42,366 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:29:42,367 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:29:42,368 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:29:42,368 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:29:42,369 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:29:42,370 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:29:42,623 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:29:42,836 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:42,842 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:43,030 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:29:43,121 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 14:29:43,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@47e08a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:43, skipping insertion in model container [2021-11-19 14:29:43,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:29:43,125 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:29:43,129 INFO L158 Benchmark]: Toolchain (without parser) took 3127.11ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 73.7MB in the beginning and 78.7MB in the end (delta: -5.1MB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. [2021-11-19 14:29:43,129 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 102.8MB. Free memory is still 77.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:29:43,132 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3124.49ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 73.4MB in the beginning and 78.7MB in the end (delta: -5.3MB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. [2021-11-19 14:29:43,136 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 102.8MB. Free memory is still 77.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3124.49ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 73.4MB in the beginning and 78.7MB in the end (delta: -5.3MB). Peak memory consumption was 44.7MB. 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_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/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_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/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_14b6ae96-8e4e-4d69-9598-8be433061070/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 caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:29:45,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:29:45,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:29:45,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:29:45,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:29:45,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:29:45,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:29:45,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:29:45,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:29:45,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:29:45,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:29:45,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:29:45,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:29:45,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:29:45,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:29:45,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:29:45,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:29:45,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:29:45,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:29:45,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:29:45,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:29:45,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:29:45,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:29:45,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:29:46,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:29:46,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:29:46,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:29:46,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:29:46,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:29:46,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:29:46,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:29:46,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:29:46,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:29:46,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:29:46,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:29:46,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:29:46,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:29:46,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:29:46,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:29:46,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:29:46,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:29:46,024 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:29:46,058 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:29:46,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:29:46,062 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:29:46,062 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:29:46,062 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:29:46,063 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:29:46,063 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:29:46,063 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:29:46,064 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:29:46,065 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:29:46,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:29:46,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:29:46,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:29:46,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:29:46,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:29:46,069 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:29:46,070 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:29:46,070 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:29:46,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:29:46,070 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:29:46,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:29:46,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:29:46,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:29:46,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:29:46,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:29:46,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:29:46,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:29:46,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:29:46,073 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:29:46,073 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:29:46,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:29:46,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:29:46,074 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:29:46,075 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_14b6ae96-8e4e-4d69-9598-8be433061070/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a [2021-11-19 14:29:46,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:29:46,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:29:46,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:29:46,519 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:29:46,520 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:29:46,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i [2021-11-19 14:29:46,597 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/data/5c8a7947e/0eac55c0c497439ba70ac6a07f86ee88/FLAGab7a118b1 [2021-11-19 14:29:47,610 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:29:47,611 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i [2021-11-19 14:29:47,666 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/data/5c8a7947e/0eac55c0c497439ba70ac6a07f86ee88/FLAGab7a118b1 [2021-11-19 14:29:48,001 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/data/5c8a7947e/0eac55c0c497439ba70ac6a07f86ee88 [2021-11-19 14:29:48,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:29:48,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:29:48,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:29:48,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:29:48,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:29:48,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:29:48" (1/1) ... [2021-11-19 14:29:48,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31dd27ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:48, skipping insertion in model container [2021-11-19 14:29:48,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:29:48" (1/1) ... [2021-11-19 14:29:48,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:29:48,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:29:48,513 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_14b6ae96-8e4e-4d69-9598-8be433061070/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4499,4512] [2021-11-19 14:29:48,526 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_14b6ae96-8e4e-4d69-9598-8be433061070/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4559,4572] [2021-11-19 14:29:48,560 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:29:48,569 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:29:49,631 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:49,631 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:49,632 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:49,633 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:49,634 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:49,649 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:49,649 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:49,651 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:49,652 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:50,202 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:29:50,204 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:29:50,205 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:29:50,206 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:29:50,211 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:29:50,214 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:29:50,215 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:29:50,218 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:29:50,220 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:29:50,221 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:29:50,436 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:29:50,554 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:50,554 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:50,649 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:29:50,742 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:29:50,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:29:50,802 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_14b6ae96-8e4e-4d69-9598-8be433061070/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4499,4512] [2021-11-19 14:29:50,805 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_14b6ae96-8e4e-4d69-9598-8be433061070/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4559,4572] [2021-11-19 14:29:50,810 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:29:50,814 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:29:50,896 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:50,896 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:50,897 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:50,897 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:50,898 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:50,907 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:50,908 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:50,909 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:50,909 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:50,957 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:29:50,958 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:29:50,960 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:29:50,961 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:29:50,971 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:29:50,973 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:29:50,974 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:29:50,974 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:29:50,975 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:29:50,975 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:29:51,000 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:29:51,080 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:51,081 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:51,154 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:29:51,225 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:29:51,247 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_14b6ae96-8e4e-4d69-9598-8be433061070/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4499,4512] [2021-11-19 14:29:51,248 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_14b6ae96-8e4e-4d69-9598-8be433061070/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4559,4572] [2021-11-19 14:29:51,250 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:29:51,250 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:29:51,300 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:51,301 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:51,307 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:51,308 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:51,308 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:51,315 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:51,315 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:51,316 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:51,317 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:51,359 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:29:51,359 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:29:51,360 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:29:51,361 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:29:51,362 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:29:51,363 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:29:51,364 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:29:51,365 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:29:51,366 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:29:51,367 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:29:51,397 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:29:51,493 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:51,494 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:29:51,551 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:29:52,046 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:29:52,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:52 WrapperNode [2021-11-19 14:29:52,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:29:52,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:29:52,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:29:52,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:29:52,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:52" (1/1) ... [2021-11-19 14:29:52,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:52" (1/1) ... [2021-11-19 14:29:52,320 INFO L137 Inliner]: procedures = 715, calls = 2791, calls flagged for inlining = 60, calls inlined = 7, statements flattened = 865 [2021-11-19 14:29:52,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:29:52,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:29:52,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:29:52,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:29:52,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:52" (1/1) ... [2021-11-19 14:29:52,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:52" (1/1) ... [2021-11-19 14:29:52,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:52" (1/1) ... [2021-11-19 14:29:52,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:52" (1/1) ... [2021-11-19 14:29:52,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:52" (1/1) ... [2021-11-19 14:29:52,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:52" (1/1) ... [2021-11-19 14:29:52,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:52" (1/1) ... [2021-11-19 14:29:52,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:29:52,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:29:52,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:29:52,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:29:52,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:52" (1/1) ... [2021-11-19 14:29:52,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:29:52,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:29:52,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:29:52,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:29:52,538 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-11-19 14:29:52,538 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-11-19 14:29:52,539 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-19 14:29:52,539 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-19 14:29:52,539 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2021-11-19 14:29:52,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2021-11-19 14:29:52,539 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 14:29:52,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:29:52,541 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 14:29:52,541 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 14:29:52,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:29:52,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:29:52,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:29:52,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:29:52,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:29:52,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:29:52,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:29:52,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:29:52,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:29:52,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:29:52,543 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 14:29:52,543 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 14:29:52,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:29:52,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:29:52,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 14:29:52,544 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:29:52,544 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:29:52,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:29:52,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:29:52,545 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2021-11-19 14:29:52,545 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2021-11-19 14:29:52,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:29:52,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:29:52,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:29:52,546 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 14:29:52,546 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 14:29:52,547 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 14:29:52,548 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 14:29:52,869 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:29:52,871 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:29:56,979 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:29:56,988 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:29:56,988 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 14:29:56,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:29:56 BoogieIcfgContainer [2021-11-19 14:29:56,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:29:56,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:29:56,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:29:56,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:29:56,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:29:48" (1/3) ... [2021-11-19 14:29:56,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ac6a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:29:56, skipping insertion in model container [2021-11-19 14:29:56,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:52" (2/3) ... [2021-11-19 14:29:56,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ac6a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:29:56, skipping insertion in model container [2021-11-19 14:29:56,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:29:56" (3/3) ... [2021-11-19 14:29:57,000 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_eq_byte_cursor_harness.i [2021-11-19 14:29:57,006 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:29:57,006 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:29:57,063 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:29:57,082 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 14:29:57,082 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:29:57,119 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 84 states have (on average 1.2857142857142858) internal successors, (108), 85 states have internal predecessors, (108), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-19 14:29:57,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-19 14:29:57,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:57,142 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-11-19 14:29:57,157 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:29:57,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:57,163 INFO L85 PathProgramCache]: Analyzing trace with hash -36783961, now seen corresponding path program 1 times [2021-11-19 14:29:57,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:57,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793930696] [2021-11-19 14:29:57,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:57,220 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:57,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:57,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:57,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:29:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:58,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:29:58,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:29:58,365 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-19 14:29:58,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:29:58,505 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-19 14:29:58,506 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:29:58,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793930696] [2021-11-19 14:29:58,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793930696] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:29:58,507 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:29:58,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:29:58,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763755640] [2021-11-19 14:29:58,510 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:29:58,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:29:58,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:29:58,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:29:58,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:29:58,545 INFO L87 Difference]: Start difference. First operand has 125 states, 84 states have (on average 1.2857142857142858) internal successors, (108), 85 states have internal predecessors, (108), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 14:29:58,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:29:58,588 INFO L93 Difference]: Finished difference Result 241 states and 335 transitions. [2021-11-19 14:29:58,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:29:58,590 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 61 [2021-11-19 14:29:58,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:29:58,603 INFO L225 Difference]: With dead ends: 241 [2021-11-19 14:29:58,603 INFO L226 Difference]: Without dead ends: 120 [2021-11-19 14:29:58,608 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 [2021-11-19 14:29:58,611 INFO L933 BasicCegarLoop]: 164 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, 164 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 14:29:58,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:29:58,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-19 14:29:58,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-11-19 14:29:58,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 80 states have (on average 1.275) internal successors, (102), 81 states have internal predecessors, (102), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-19 14:29:58,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 159 transitions. [2021-11-19 14:29:58,670 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 159 transitions. Word has length 61 [2021-11-19 14:29:58,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:29:58,672 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 159 transitions. [2021-11-19 14:29:58,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 14:29:58,673 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 159 transitions. [2021-11-19 14:29:58,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-19 14:29:58,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:58,678 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-11-19 14:29:58,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:29:58,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:29:58,899 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:29:58,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:58,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1506462629, now seen corresponding path program 1 times [2021-11-19 14:29:58,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:58,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744498784] [2021-11-19 14:29:58,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:58,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:58,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:58,905 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:58,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:29:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:59,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:29:59,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:30:00,034 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 14:30:00,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:30:00,376 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-19 14:30:00,377 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:30:00,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744498784] [2021-11-19 14:30:00,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744498784] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:30:00,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:30:00,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 14:30:00,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111453868] [2021-11-19 14:30:00,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:30:00,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:30:00,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:30:00,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:30:00,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:30:00,384 INFO L87 Difference]: Start difference. First operand 120 states and 159 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-19 14:30:00,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:30:00,572 INFO L93 Difference]: Finished difference Result 206 states and 275 transitions. [2021-11-19 14:30:00,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:30:00,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 61 [2021-11-19 14:30:00,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:30:00,577 INFO L225 Difference]: With dead ends: 206 [2021-11-19 14:30:00,577 INFO L226 Difference]: Without dead ends: 123 [2021-11-19 14:30:00,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:30:00,579 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 50 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:30:00,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 537 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:30:00,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-19 14:30:00,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-11-19 14:30:00,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 82 states have (on average 1.2682926829268293) internal successors, (104), 84 states have internal predecessors, (104), 29 states have call successors, (29), 10 states have call predecessors, (29), 11 states have return successors, (29), 28 states have call predecessors, (29), 28 states have call successors, (29) [2021-11-19 14:30:00,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 162 transitions. [2021-11-19 14:30:00,599 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 162 transitions. Word has length 61 [2021-11-19 14:30:00,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:30:00,600 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 162 transitions. [2021-11-19 14:30:00,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-19 14:30:00,600 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 162 transitions. [2021-11-19 14:30:00,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 14:30:00,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:30:00,604 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:30:00,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:30:00,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:30:00,819 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:30:00,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:30:00,820 INFO L85 PathProgramCache]: Analyzing trace with hash -227569102, now seen corresponding path program 1 times [2021-11-19 14:30:00,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:30:00,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [128055981] [2021-11-19 14:30:00,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:30:00,824 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:30:00,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:30:00,825 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:30:00,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:30:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:30:01,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 1425 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:30:01,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:30:01,903 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-19 14:30:01,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:30:02,095 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-19 14:30:02,096 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:30:02,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [128055981] [2021-11-19 14:30:02,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [128055981] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:30:02,096 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:30:02,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-19 14:30:02,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23737158] [2021-11-19 14:30:02,096 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:30:02,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:30:02,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:30:02,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:30:02,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:30:02,098 INFO L87 Difference]: Start difference. First operand 123 states and 162 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-19 14:30:02,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:30:02,488 INFO L93 Difference]: Finished difference Result 227 states and 308 transitions. [2021-11-19 14:30:02,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:30:02,490 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 65 [2021-11-19 14:30:02,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:30:02,493 INFO L225 Difference]: With dead ends: 227 [2021-11-19 14:30:02,493 INFO L226 Difference]: Without dead ends: 158 [2021-11-19 14:30:02,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:30:02,495 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 78 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:30:02,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 833 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:30:02,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-19 14:30:02,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 135. [2021-11-19 14:30:02,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 90 states have (on average 1.2555555555555555) internal successors, (113), 92 states have internal predecessors, (113), 33 states have call successors, (33), 10 states have call predecessors, (33), 11 states have return successors, (34), 32 states have call predecessors, (34), 32 states have call successors, (34) [2021-11-19 14:30:02,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 180 transitions. [2021-11-19 14:30:02,529 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 180 transitions. Word has length 65 [2021-11-19 14:30:02,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:30:02,529 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 180 transitions. [2021-11-19 14:30:02,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-19 14:30:02,530 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 180 transitions. [2021-11-19 14:30:02,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 14:30:02,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:30:02,534 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:30:02,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:30:02,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:30:02,751 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:30:02,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:30:02,752 INFO L85 PathProgramCache]: Analyzing trace with hash 474030772, now seen corresponding path program 1 times [2021-11-19 14:30:02,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:30:02,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030253834] [2021-11-19 14:30:02,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:30:02,760 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:30:02,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:30:02,761 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:30:02,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:30:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:30:03,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 1425 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:30:03,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:30:03,874 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-19 14:30:03,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:30:04,171 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-19 14:30:04,172 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:30:04,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030253834] [2021-11-19 14:30:04,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030253834] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:30:04,172 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:30:04,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:30:04,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621509938] [2021-11-19 14:30:04,173 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:30:04,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:30:04,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:30:04,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:30:04,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:30:04,174 INFO L87 Difference]: Start difference. First operand 135 states and 180 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 14:30:04,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:30:04,274 INFO L93 Difference]: Finished difference Result 233 states and 315 transitions. [2021-11-19 14:30:04,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:30:04,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 65 [2021-11-19 14:30:04,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:30:04,280 INFO L225 Difference]: With dead ends: 233 [2021-11-19 14:30:04,280 INFO L226 Difference]: Without dead ends: 179 [2021-11-19 14:30:04,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 126 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 14:30:04,282 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 12 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:30:04,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 482 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:30:04,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-19 14:30:04,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2021-11-19 14:30:04,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 118 states have (on average 1.2542372881355932) internal successors, (148), 120 states have internal predecessors, (148), 47 states have call successors, (47), 10 states have call predecessors, (47), 11 states have return successors, (50), 46 states have call predecessors, (50), 46 states have call successors, (50) [2021-11-19 14:30:04,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 245 transitions. [2021-11-19 14:30:04,304 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 245 transitions. Word has length 65 [2021-11-19 14:30:04,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:30:04,304 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 245 transitions. [2021-11-19 14:30:04,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 14:30:04,305 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 245 transitions. [2021-11-19 14:30:04,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 14:30:04,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:30:04,308 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-11-19 14:30:04,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:30:04,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:30:04,526 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:30:04,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:30:04,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1921107313, now seen corresponding path program 1 times [2021-11-19 14:30:04,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:30:04,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051164274] [2021-11-19 14:30:04,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:30:04,529 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:30:04,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:30:04,530 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:30:04,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:30:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:30:05,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 1421 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 14:30:05,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:30:09,321 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 14:30:09,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:30:22,022 WARN L227 SmtUtils]: Spent 9.09s 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) [2021-11-19 14:30:22,044 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-19 14:30:22,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 128 treesize of output 771 [2021-11-19 14:42:32,325 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-19 14:42:32,326 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:42:32,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051164274] [2021-11-19 14:42:32,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1051164274] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:42:32,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [148595835] [2021-11-19 14:42:32,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:42:32,327 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:42:32,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:42:32,335 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:42:32,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-19 14:42:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:42:38,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 1421 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:42:38,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:39,012 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-19 14:42:39,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:42:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-19 14:42:39,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [148595835] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:42:39,503 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:42:39,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [15, 13] total 28 [2021-11-19 14:42:39,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519035178] [2021-11-19 14:42:39,503 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:42:39,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:42:39,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:42:39,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:42:39,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2021-11-19 14:42:39,505 INFO L87 Difference]: Start difference. First operand 177 states and 245 transitions. Second operand has 12 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2021-11-19 14:42:39,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:42:39,881 INFO L93 Difference]: Finished difference Result 188 states and 261 transitions. [2021-11-19 14:42:39,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:42:39,882 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) Word has length 65 [2021-11-19 14:42:39,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:42:39,885 INFO L225 Difference]: With dead ends: 188 [2021-11-19 14:42:39,886 INFO L226 Difference]: Without dead ends: 181 [2021-11-19 14:42:39,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 222 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2021-11-19 14:42:39,888 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 17 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:42:39,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 1544 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:42:39,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-19 14:42:39,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-19 14:42:39,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 121 states have (on average 1.2479338842975207) internal successors, (151), 124 states have internal predecessors, (151), 47 states have call successors, (47), 10 states have call predecessors, (47), 12 states have return successors, (56), 46 states have call predecessors, (56), 46 states have call successors, (56) [2021-11-19 14:42:39,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 254 transitions. [2021-11-19 14:42:39,927 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 254 transitions. Word has length 65 [2021-11-19 14:42:39,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:42:39,933 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 254 transitions. [2021-11-19 14:42:39,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2021-11-19 14:42:39,933 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 254 transitions. [2021-11-19 14:42:39,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 14:42:39,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:42:39,938 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 14:42:39,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:42:40,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:42:40,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:42:40,348 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:42:40,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:42:40,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1896065095, now seen corresponding path program 1 times [2021-11-19 14:42:40,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:42:40,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074847492] [2021-11-19 14:42:40,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:42:40,351 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:42:40,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:42:40,353 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:42:40,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6ae96-8e4e-4d69-9598-8be433061070/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:42:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:42:41,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 14:42:41,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:43,964 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 14:42:43,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:42:57,429 WARN L227 SmtUtils]: Spent 10.92s 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) [2021-11-19 14:42:57,432 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-19 14:42:57,432 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