./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f87ca444cebdd8343e0a486129ff23acad574c7cfb073abcacffd6c901ccf3af --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:16:58,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:16:58,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:16:58,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:16:58,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:16:58,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:16:58,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:16:58,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:16:58,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:16:58,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:16:58,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:16:58,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:16:58,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:16:58,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:16:58,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:16:58,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:16:58,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:16:58,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:16:58,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:16:58,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:16:58,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:16:58,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:16:58,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:16:58,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:16:58,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:16:58,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:16:58,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:16:58,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:16:58,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:16:58,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:16:58,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:16:58,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:16:58,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:16:58,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:16:58,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:16:58,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:16:58,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:16:58,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:16:58,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:16:58,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:16:58,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:16:58,910 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 22:16:58,955 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:16:58,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:16:58,957 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:16:58,957 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:16:58,958 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:16:58,958 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:16:58,964 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:16:58,964 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:16:58,965 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:16:58,965 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:16:58,966 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:16:58,966 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:16:58,966 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:16:58,967 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:16:58,967 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:16:58,967 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:16:58,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:16:58,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:16:58,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:16:58,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:16:58,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:16:58,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:16:58,969 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:16:58,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:16:58,970 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:16:58,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:16:58,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:16:58,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:16:58,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:16:58,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:16:58,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:16:58,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:16:58,973 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:16:58,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:16:58,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:16:58,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:16:58,974 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:16:58,974 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_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f87ca444cebdd8343e0a486129ff23acad574c7cfb073abcacffd6c901ccf3af [2021-11-12 22:16:59,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:16:59,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:16:59,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:16:59,255 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:16:59,255 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:16:59,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i [2021-11-12 22:16:59,325 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/data/d0b2d9382/d96bb72eef884abcb781dc96ac712797/FLAGb5506dd18 [2021-11-12 22:17:00,171 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:17:00,173 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i [2021-11-12 22:17:00,214 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/data/d0b2d9382/d96bb72eef884abcb781dc96ac712797/FLAGb5506dd18 [2021-11-12 22:17:00,677 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/data/d0b2d9382/d96bb72eef884abcb781dc96ac712797 [2021-11-12 22:17:00,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:17:00,680 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:17:00,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:17:00,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:17:00,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:17:00,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:17:00" (1/1) ... [2021-11-12 22:17:00,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26c57bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:00, skipping insertion in model container [2021-11-12 22:17:00,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:17:00" (1/1) ... [2021-11-12 22:17:00,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:17:00,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:17:01,220 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4498,4511] [2021-11-12 22:17:01,228 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4558,4571] [2021-11-12 22:17:01,255 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:17:01,264 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:17:02,270 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:02,271 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:02,271 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:02,272 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:02,273 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:02,299 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:02,300 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:02,305 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:02,307 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:02,704 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:17:02,705 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:17:02,706 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:17:02,708 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:17:02,709 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:17:02,710 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:17:02,711 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:17:02,711 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:17:02,712 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:17:02,713 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:17:02,899 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:17:03,022 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:03,022 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:03,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:17:03,170 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 22:17:03,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@725dfe4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:03, skipping insertion in model container [2021-11-12 22:17:03,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:17:03,174 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:17:03,176 INFO L158 Benchmark]: Toolchain (without parser) took 2493.93ms. Allocated memory is still 115.3MB. Free memory was 90.0MB in the beginning and 67.8MB in the end (delta: 22.2MB). Peak memory consumption was 45.2MB. Max. memory is 16.1GB. [2021-11-12 22:17:03,176 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 88.1MB. Free memory was 60.2MB in the beginning and 60.1MB in the end (delta: 30.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:17:03,178 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2491.57ms. Allocated memory is still 115.3MB. Free memory was 89.5MB in the beginning and 67.8MB in the end (delta: 21.7MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. [2021-11-12 22:17:03,179 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 88.1MB. Free memory was 60.2MB in the beginning and 60.1MB in the end (delta: 30.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2491.57ms. Allocated memory is still 115.3MB. Free memory was 89.5MB in the beginning and 67.8MB in the end (delta: 21.7MB). Peak memory consumption was 43.1MB. 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_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f87ca444cebdd8343e0a486129ff23acad574c7cfb073abcacffd6c901ccf3af --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:17:05,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:17:05,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:17:05,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:17:05,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:17:05,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:17:05,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:17:05,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:17:05,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:17:05,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:17:05,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:17:05,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:17:05,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:17:05,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:17:05,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:17:05,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:17:05,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:17:05,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:17:05,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:17:05,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:17:05,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:17:05,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:17:05,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:17:05,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:17:05,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:17:05,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:17:05,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:17:05,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:17:05,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:17:05,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:17:05,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:17:05,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:17:05,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:17:05,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:17:05,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:17:05,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:17:05,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:17:05,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:17:05,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:17:05,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:17:05,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:17:05,501 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 22:17:05,542 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:17:05,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:17:05,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:17:05,544 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:17:05,544 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:17:05,545 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:17:05,545 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:17:05,545 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:17:05,545 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:17:05,545 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:17:05,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:17:05,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:17:05,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:17:05,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:17:05,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:17:05,548 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:17:05,548 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:17:05,549 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:17:05,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:17:05,549 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:17:05,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:17:05,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:17:05,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:17:05,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:17:05,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:17:05,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:17:05,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:17:05,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:17:05,551 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:17:05,551 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:17:05,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:17:05,551 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:17:05,551 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:17:05,552 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_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f87ca444cebdd8343e0a486129ff23acad574c7cfb073abcacffd6c901ccf3af [2021-11-12 22:17:05,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:17:05,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:17:05,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:17:05,937 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:17:05,942 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:17:05,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i [2021-11-12 22:17:06,008 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/data/127782d65/302d258127d54253a1ca07dea39257a3/FLAGb800ace71 [2021-11-12 22:17:06,820 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:17:06,821 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i [2021-11-12 22:17:06,865 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/data/127782d65/302d258127d54253a1ca07dea39257a3/FLAGb800ace71 [2021-11-12 22:17:06,975 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/data/127782d65/302d258127d54253a1ca07dea39257a3 [2021-11-12 22:17:06,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:17:06,979 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:17:06,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:17:06,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:17:06,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:17:06,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:17:06" (1/1) ... [2021-11-12 22:17:06,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4411acdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:06, skipping insertion in model container [2021-11-12 22:17:06,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:17:06" (1/1) ... [2021-11-12 22:17:06,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:17:07,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:17:07,404 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4498,4511] [2021-11-12 22:17:07,411 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4558,4571] [2021-11-12 22:17:07,444 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:17:07,452 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:17:08,764 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:08,766 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:08,767 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:08,768 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:08,771 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:08,796 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:08,796 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:08,800 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:08,800 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:09,254 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:17:09,256 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:17:09,257 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:17:09,258 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:17:09,259 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:17:09,260 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:17:09,261 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:17:09,261 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:17:09,262 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:17:09,263 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:17:09,416 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:17:09,558 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:09,559 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:09,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:17:09,710 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:17:09,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:17:09,824 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4498,4511] [2021-11-12 22:17:09,824 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4558,4571] [2021-11-12 22:17:09,825 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:17:09,828 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:17:09,875 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:09,876 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:09,876 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:09,876 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:09,877 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:09,893 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:09,893 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:09,895 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:09,895 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:09,950 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:17:09,951 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:17:09,951 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:17:09,952 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:17:09,953 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:17:09,953 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:17:09,953 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:17:09,954 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:17:09,954 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:17:09,955 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:17:09,996 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:17:10,085 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:10,085 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:10,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:17:10,181 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:17:10,207 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4498,4511] [2021-11-12 22:17:10,208 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4558,4571] [2021-11-12 22:17:10,209 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:17:10,210 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:17:10,249 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:10,249 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:10,250 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:10,250 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:10,250 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:10,255 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:10,256 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:10,256 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:10,257 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:10,287 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:17:10,288 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:17:10,288 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:17:10,289 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:17:10,317 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:17:10,318 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:17:10,319 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:17:10,319 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:17:10,320 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:17:10,320 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:17:10,371 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:17:10,490 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:10,490 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:10,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:17:10,906 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:17:10,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:10 WrapperNode [2021-11-12 22:17:10,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:17:10,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:17:10,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:17:10,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:17:10,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:10" (1/1) ... [2021-11-12 22:17:11,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:10" (1/1) ... [2021-11-12 22:17:11,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:17:11,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:17:11,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:17:11,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:17:11,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:10" (1/1) ... [2021-11-12 22:17:11,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:10" (1/1) ... [2021-11-12 22:17:11,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:10" (1/1) ... [2021-11-12 22:17:11,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:10" (1/1) ... [2021-11-12 22:17:11,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:10" (1/1) ... [2021-11-12 22:17:11,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:10" (1/1) ... [2021-11-12 22:17:11,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:10" (1/1) ... [2021-11-12 22:17:11,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:17:11,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:17:11,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:17:11,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:17:11,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:10" (1/1) ... [2021-11-12 22:17:11,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:17:11,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:17:11,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:17:11,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:17:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2021-11-12 22:17:11,349 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2021-11-12 22:17:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-12 22:17:11,349 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-12 22:17:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:17:11,350 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 22:17:11,350 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 22:17:11,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:17:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 22:17:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 22:17:11,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 22:17:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:17:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-12 22:17:11,352 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-12 22:17:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:17:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:17:11,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:17:11,353 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 22:17:11,353 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 22:17:11,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:17:11,353 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-12 22:17:11,354 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-12 22:17:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 22:17:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 22:17:11,355 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 22:17:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:17:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:17:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 22:17:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 22:17:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 22:17:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-12 22:17:11,356 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-12 22:17:24,485 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:17:24,485 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 22:17:24,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:17:24 BoogieIcfgContainer [2021-11-12 22:17:24,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:17:24,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:17:24,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:17:24,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:17:24,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:17:06" (1/3) ... [2021-11-12 22:17:24,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20601f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:17:24, skipping insertion in model container [2021-11-12 22:17:24,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:10" (2/3) ... [2021-11-12 22:17:24,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20601f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:17:24, skipping insertion in model container [2021-11-12 22:17:24,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:17:24" (3/3) ... [2021-11-12 22:17:24,495 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_c_str_harness.i [2021-11-12 22:17:24,500 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:17:24,500 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:17:24,545 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:17:24,551 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:17:24,552 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:17:24,569 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 81 states have (on average 1.2592592592592593) internal successors, (102), 83 states have internal predecessors, (102), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-12 22:17:24,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-12 22:17:24,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:17:24,582 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:17:24,582 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:17:24,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:17:24,588 INFO L85 PathProgramCache]: Analyzing trace with hash -32550495, now seen corresponding path program 1 times [2021-11-12 22:17:24,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:17:24,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317566788] [2021-11-12 22:17:24,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:17:24,609 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:17:24,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:17:24,615 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:17:24,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:17:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:17:28,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 1905 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:17:28,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:17:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-12 22:17:29,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:17:29,781 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-12 22:17:29,782 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:17:29,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317566788] [2021-11-12 22:17:29,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [317566788] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:17:29,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:17:29,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-12 22:17:29,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616167834] [2021-11-12 22:17:29,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:17:29,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:17:29,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:17:29,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:17:29,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:17:29,839 INFO L87 Difference]: Start difference. First operand has 123 states, 81 states have (on average 1.2592592592592593) internal successors, (102), 83 states have internal predecessors, (102), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-12 22:17:29,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:17:29,902 INFO L93 Difference]: Finished difference Result 241 states and 345 transitions. [2021-11-12 22:17:29,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:17:29,906 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 116 [2021-11-12 22:17:29,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:17:29,919 INFO L225 Difference]: With dead ends: 241 [2021-11-12 22:17:29,919 INFO L226 Difference]: Without dead ends: 118 [2021-11-12 22:17:29,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:17:29,930 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.86ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:17:29,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 5.86ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:17:29,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-12 22:17:29,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-11-12 22:17:29,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 78 states have internal predecessors, (94), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-12 22:17:29,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 155 transitions. [2021-11-12 22:17:29,979 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 155 transitions. Word has length 116 [2021-11-12 22:17:29,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:17:29,981 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 155 transitions. [2021-11-12 22:17:29,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-12 22:17:29,981 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 155 transitions. [2021-11-12 22:17:29,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-12 22:17:29,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:17:29,985 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:17:30,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:17:30,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:17:30,201 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:17:30,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:17:30,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1139488593, now seen corresponding path program 1 times [2021-11-12 22:17:30,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:17:30,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404492475] [2021-11-12 22:17:30,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:17:30,210 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:17:30,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:17:30,211 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:17:30,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:17:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:17:34,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 1905 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:17:34,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:17:34,860 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-12 22:17:34,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:17:35,415 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-12 22:17:35,416 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:17:35,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404492475] [2021-11-12 22:17:35,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404492475] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:17:35,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:17:35,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 22:17:35,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249956703] [2021-11-12 22:17:35,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:17:35,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:17:35,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:17:35,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:17:35,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:17:35,420 INFO L87 Difference]: Start difference. First operand 118 states and 155 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-12 22:17:35,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:17:35,650 INFO L93 Difference]: Finished difference Result 211 states and 280 transitions. [2021-11-12 22:17:35,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:17:35,653 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 116 [2021-11-12 22:17:35,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:17:35,657 INFO L225 Difference]: With dead ends: 211 [2021-11-12 22:17:35,657 INFO L226 Difference]: Without dead ends: 121 [2021-11-12 22:17:35,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:17:35,659 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 44 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 161.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.87ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 198.78ms IncrementalHoareTripleChecker+Time [2021-11-12 22:17:35,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 366 Invalid, 35 Unknown, 0 Unchecked, 4.87ms Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 198.78ms Time] [2021-11-12 22:17:35,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-12 22:17:35,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-11-12 22:17:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 79 states have (on average 1.2151898734177216) internal successors, (96), 81 states have internal predecessors, (96), 31 states have call successors, (31), 9 states have call predecessors, (31), 10 states have return successors, (32), 30 states have call predecessors, (32), 30 states have call successors, (32) [2021-11-12 22:17:35,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 159 transitions. [2021-11-12 22:17:35,695 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 159 transitions. Word has length 116 [2021-11-12 22:17:35,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:17:35,697 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 159 transitions. [2021-11-12 22:17:35,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-12 22:17:35,697 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 159 transitions. [2021-11-12 22:17:35,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-12 22:17:35,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:17:35,709 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:17:35,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:17:35,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:17:35,910 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:17:35,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:17:35,911 INFO L85 PathProgramCache]: Analyzing trace with hash -787565290, now seen corresponding path program 1 times [2021-11-12 22:17:35,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:17:35,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455161736] [2021-11-12 22:17:35,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:17:35,920 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:17:35,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:17:35,922 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:17:35,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:17:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:17:40,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 1909 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:17:40,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:17:40,657 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-12 22:17:40,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:17:41,200 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-12 22:17:41,200 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:17:41,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455161736] [2021-11-12 22:17:41,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455161736] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:17:41,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:17:41,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2021-11-12 22:17:41,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874667551] [2021-11-12 22:17:41,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:17:41,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:17:41,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:17:41,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:17:41,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:17:41,203 INFO L87 Difference]: Start difference. First operand 121 states and 159 transitions. Second operand has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-12 22:17:41,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:17:41,501 INFO L93 Difference]: Finished difference Result 198 states and 259 transitions. [2021-11-12 22:17:41,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:17:41,502 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 118 [2021-11-12 22:17:41,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:17:41,504 INFO L225 Difference]: With dead ends: 198 [2021-11-12 22:17:41,504 INFO L226 Difference]: Without dead ends: 118 [2021-11-12 22:17:41,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:17:41,506 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 61 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 228.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.46ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 259.73ms IncrementalHoareTripleChecker+Time [2021-11-12 22:17:41,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 609 Invalid, 80 Unknown, 0 Unchecked, 5.46ms Time], IncrementalHoareTripleChecker [29 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 259.73ms Time] [2021-11-12 22:17:41,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-12 22:17:41,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-11-12 22:17:41,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.2077922077922079) internal successors, (93), 78 states have internal predecessors, (93), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-12 22:17:41,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 154 transitions. [2021-11-12 22:17:41,521 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 154 transitions. Word has length 118 [2021-11-12 22:17:41,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:17:41,522 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 154 transitions. [2021-11-12 22:17:41,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-12 22:17:41,522 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 154 transitions. [2021-11-12 22:17:41,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-12 22:17:41,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:17:41,525 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:17:41,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:17:41,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:17:41,746 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:17:41,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:17:41,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1485450464, now seen corresponding path program 1 times [2021-11-12 22:17:41,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:17:41,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502979115] [2021-11-12 22:17:41,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:17:41,751 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:17:41,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:17:41,752 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:17:41,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:17:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:17:45,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 1917 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-12 22:17:45,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:17:50,662 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 90 proven. 10 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-12 22:17:50,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:18:05,834 WARN L227 SmtUtils]: Spent 9.19s on a formula simplification. DAG size of input: 523 DAG size of output: 269 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 22:18:05,839 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-12 22:18:05,840 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 [2021-11-12 22:29:42,119 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-12 22:29:42,120 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:29:42,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502979115] [2021-11-12 22:29:42,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502979115] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:29:42,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1117518548] [2021-11-12 22:29:42,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:42,121 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:29:42,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:29:42,125 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:29:42,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-12 22:29:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:51,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 1917 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 22:29:51,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:29:51,917 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-11-12 22:29:51,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:29:52,744 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-11-12 22:29:52,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1117518548] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:29:52,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:29:52,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17, 15, 8] total 32 [2021-11-12 22:29:52,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120717109] [2021-11-12 22:29:52,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:52,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:29:52,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:29:52,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:29:52,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2021-11-12 22:29:52,748 INFO L87 Difference]: Start difference. First operand 118 states and 154 transitions. Second operand has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2021-11-12 22:29:53,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:53,175 INFO L93 Difference]: Finished difference Result 130 states and 169 transitions. [2021-11-12 22:29:53,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 22:29:53,176 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 122 [2021-11-12 22:29:53,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:53,180 INFO L225 Difference]: With dead ends: 130 [2021-11-12 22:29:53,180 INFO L226 Difference]: Without dead ends: 128 [2021-11-12 22:29:53,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 443 SyntacticMatches, 11 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=100, Invalid=1022, Unknown=0, NotChecked=0, Total=1122 [2021-11-12 22:29:53,182 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 17 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 116.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.47ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 152.41ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:53,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 1024 Invalid, 48 Unknown, 0 Unchecked, 6.47ms Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 152.41ms Time] [2021-11-12 22:29:53,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-12 22:29:53,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2021-11-12 22:29:53,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 83 states have (on average 1.1927710843373494) internal successors, (99), 85 states have internal predecessors, (99), 32 states have call successors, (32), 10 states have call predecessors, (32), 11 states have return successors, (35), 31 states have call predecessors, (35), 31 states have call successors, (35) [2021-11-12 22:29:53,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 166 transitions. [2021-11-12 22:29:53,200 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 166 transitions. Word has length 122 [2021-11-12 22:29:53,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:53,201 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 166 transitions. [2021-11-12 22:29:53,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2021-11-12 22:29:53,201 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 166 transitions. [2021-11-12 22:29:53,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-12 22:29:53,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:53,204 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:29:53,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:29:53,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-12 22:29:53,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:29:53,624 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:29:53,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:53,625 INFO L85 PathProgramCache]: Analyzing trace with hash 52780584, now seen corresponding path program 1 times [2021-11-12 22:29:53,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:29:53,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141987071] [2021-11-12 22:29:53,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:53,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:29:53,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:29:53,630 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:29:53,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13920254-009a-48f3-8e71-601fb2980521/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:29:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:58,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-12 22:29:58,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:01,191 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 90 proven. 10 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-12 22:30:01,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:15,873 WARN L227 SmtUtils]: Spent 11.18s on a formula simplification. DAG size of input: 523 DAG size of output: 269 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 22:30:15,877 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-12 22:30:15,878 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