./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 26dd1e590401fc7cb1a23c07b0d1f52f89cca75ab7679d1aa0110320620b8ebd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:48:41,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:48:41,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:48:41,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:48:41,504 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:48:41,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:48:41,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:48:41,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:48:41,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:48:41,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:48:41,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:48:41,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:48:41,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:48:41,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:48:41,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:48:41,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:48:41,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:48:41,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:48:41,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:48:41,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:48:41,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:48:41,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:48:41,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:48:41,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:48:41,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:48:41,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:48:41,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:48:41,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:48:41,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:48:41,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:48:41,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:48:41,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:48:41,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:48:41,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:48:41,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:48:41,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:48:41,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:48:41,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:48:41,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:48:41,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:48:41,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:48:41,574 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 15:48:41,626 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:48:41,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:48:41,628 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:48:41,629 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:48:41,629 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:48:41,630 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:48:41,630 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:48:41,630 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:48:41,631 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:48:41,631 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:48:41,632 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:48:41,633 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:48:41,633 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:48:41,633 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:48:41,634 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:48:41,634 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:48:41,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:48:41,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:48:41,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:48:41,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:48:41,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:48:41,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:48:41,637 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:48:41,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:48:41,638 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:48:41,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:48:41,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:48:41,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:48:41,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:48:41,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:48:41,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:48:41,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:48:41,642 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:48:41,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:48:41,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:48:41,643 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:48:41,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:48:41,644 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_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26dd1e590401fc7cb1a23c07b0d1f52f89cca75ab7679d1aa0110320620b8ebd [2021-11-19 15:48:42,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:48:42,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:48:42,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:48:42,091 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:48:42,092 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:48:42,094 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i [2021-11-19 15:48:42,189 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/data/e03f395a6/d58e40e788a24053a4f09d28f90e737d/FLAG3507dbc96 [2021-11-19 15:48:43,381 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:48:43,382 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i [2021-11-19 15:48:43,437 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/data/e03f395a6/d58e40e788a24053a4f09d28f90e737d/FLAG3507dbc96 [2021-11-19 15:48:43,699 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/data/e03f395a6/d58e40e788a24053a4f09d28f90e737d [2021-11-19 15:48:43,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:48:43,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:48:43,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:48:43,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:48:43,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:48:43,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:48:43" (1/1) ... [2021-11-19 15:48:43,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@459100fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:43, skipping insertion in model container [2021-11-19 15:48:43,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:48:43" (1/1) ... [2021-11-19 15:48:43,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:48:43,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:48:44,257 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i[4492,4505] [2021-11-19 15:48:44,266 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i[4552,4565] [2021-11-19 15:48:44,301 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:48:44,309 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:48:45,529 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:45,530 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:45,531 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:45,532 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:45,535 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:45,558 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:45,559 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:45,563 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:45,564 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:46,157 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:48:46,159 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:48:46,160 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:48:46,162 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:48:46,165 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:48:46,166 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:48:46,167 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:48:46,168 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:48:46,170 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:48:46,171 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:48:46,491 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:48:46,778 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:46,778 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:46,899 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:48:46,998 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 15:48:47,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3042d3a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:47, skipping insertion in model container [2021-11-19 15:48:47,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:48:47,003 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:48:47,008 INFO L158 Benchmark]: Toolchain (without parser) took 3300.70ms. Allocated memory was 90.2MB in the beginning and 121.6MB in the end (delta: 31.5MB). Free memory was 63.6MB in the beginning and 73.3MB in the end (delta: -9.8MB). Peak memory consumption was 37.2MB. Max. memory is 16.1GB. [2021-11-19 15:48:47,009 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 90.2MB. Free memory was 70.6MB in the beginning and 70.5MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:48:47,011 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3297.47ms. Allocated memory was 90.2MB in the beginning and 121.6MB in the end (delta: 31.5MB). Free memory was 63.3MB in the beginning and 73.3MB in the end (delta: -10.1MB). Peak memory consumption was 37.2MB. Max. memory is 16.1GB. [2021-11-19 15:48:47,013 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 90.2MB. Free memory was 70.6MB in the beginning and 70.5MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3297.47ms. Allocated memory was 90.2MB in the beginning and 121.6MB in the end (delta: 31.5MB). Free memory was 63.3MB in the beginning and 73.3MB in the end (delta: -10.1MB). Peak memory consumption was 37.2MB. 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_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 26dd1e590401fc7cb1a23c07b0d1f52f89cca75ab7679d1aa0110320620b8ebd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:48:49,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:48:49,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:48:49,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:48:49,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:48:49,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:48:49,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:48:49,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:48:49,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:48:49,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:48:49,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:48:49,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:48:49,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:48:49,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:48:49,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:48:49,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:48:49,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:48:49,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:48:49,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:48:49,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:48:49,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:48:49,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:48:49,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:48:49,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:48:49,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:48:49,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:48:49,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:48:49,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:48:49,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:48:49,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:48:49,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:48:49,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:48:49,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:48:49,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:48:49,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:48:49,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:48:49,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:48:49,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:48:49,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:48:49,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:48:49,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:48:49,816 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 15:48:49,848 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:48:49,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:48:49,850 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:48:49,850 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:48:49,850 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:48:49,851 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:48:49,851 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:48:49,851 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:48:49,852 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:48:49,852 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:48:49,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:48:49,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:48:49,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:48:49,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:48:49,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:48:49,855 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:48:49,855 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:48:49,855 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:48:49,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:48:49,856 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:48:49,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:48:49,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:48:49,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:48:49,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:48:49,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:48:49,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:48:49,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:48:49,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:48:49,858 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:48:49,859 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:48:49,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:48:49,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:48:49,860 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:48:49,860 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_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26dd1e590401fc7cb1a23c07b0d1f52f89cca75ab7679d1aa0110320620b8ebd [2021-11-19 15:48:50,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:48:50,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:48:50,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:48:50,368 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:48:50,369 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:48:50,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i [2021-11-19 15:48:50,455 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/data/948ac99be/0ad2641adcc74ba6ab89ff22a20d85da/FLAG82b4cf3e8 [2021-11-19 15:48:51,698 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:48:51,699 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i [2021-11-19 15:48:51,752 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/data/948ac99be/0ad2641adcc74ba6ab89ff22a20d85da/FLAG82b4cf3e8 [2021-11-19 15:48:51,949 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/data/948ac99be/0ad2641adcc74ba6ab89ff22a20d85da [2021-11-19 15:48:51,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:48:51,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:48:51,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:48:51,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:48:51,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:48:51,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:48:51" (1/1) ... [2021-11-19 15:48:51,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@630ebfa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:51, skipping insertion in model container [2021-11-19 15:48:51,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:48:51" (1/1) ... [2021-11-19 15:48:51,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:48:52,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:48:52,609 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i[4492,4505] [2021-11-19 15:48:52,623 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i[4552,4565] [2021-11-19 15:48:52,663 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:48:52,675 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:48:53,971 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:53,975 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:53,976 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:53,979 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:53,984 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:54,015 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:54,017 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:54,020 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:54,021 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:54,677 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:48:54,679 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:48:54,680 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:48:54,682 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:48:54,684 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:48:54,685 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:48:54,686 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:48:54,688 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:48:54,689 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:48:54,690 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:48:54,989 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:48:55,208 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:55,208 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:55,294 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:48:55,394 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:48:55,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:48:55,513 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i[4492,4505] [2021-11-19 15:48:55,513 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i[4552,4565] [2021-11-19 15:48:55,515 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:48:55,518 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:48:55,581 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:55,581 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:55,582 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:55,582 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:55,583 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:55,605 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:55,606 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:55,607 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:55,608 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:55,675 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:48:55,676 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:48:55,677 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:48:55,682 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:48:55,684 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:48:55,688 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:48:55,689 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:48:55,690 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:48:55,690 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:48:55,691 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:48:55,740 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:48:55,845 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:55,846 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:55,901 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:48:55,970 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:48:55,997 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i[4492,4505] [2021-11-19 15:48:55,997 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i[4552,4565] [2021-11-19 15:48:55,999 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:48:56,000 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:48:56,090 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:56,091 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:56,091 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:56,092 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:56,093 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:56,101 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:56,102 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:56,103 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:56,103 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:56,146 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:48:56,147 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:48:56,148 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:48:56,149 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:48:56,149 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:48:56,150 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:48:56,151 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:48:56,152 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:48:56,152 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:48:56,153 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:48:56,186 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:48:56,273 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:56,274 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:56,313 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:48:56,834 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:48:56,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:56 WrapperNode [2021-11-19 15:48:56,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:48:56,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:48:56,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:48:56,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:48:56,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:56" (1/1) ... [2021-11-19 15:48:57,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:56" (1/1) ... [2021-11-19 15:48:57,145 INFO L137 Inliner]: procedures = 713, calls = 2633, calls flagged for inlining = 59, calls inlined = 7, statements flattened = 813 [2021-11-19 15:48:57,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:48:57,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:48:57,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:48:57,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:48:57,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:56" (1/1) ... [2021-11-19 15:48:57,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:56" (1/1) ... [2021-11-19 15:48:57,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:56" (1/1) ... [2021-11-19 15:48:57,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:56" (1/1) ... [2021-11-19 15:48:57,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:56" (1/1) ... [2021-11-19 15:48:57,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:56" (1/1) ... [2021-11-19 15:48:57,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:56" (1/1) ... [2021-11-19 15:48:57,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:48:57,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:48:57,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:48:57,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:48:57,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:56" (1/1) ... [2021-11-19 15:48:57,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:48:57,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:48:57,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:48:57,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:48:57,433 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-19 15:48:57,433 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-19 15:48:57,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:48:57,434 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 15:48:57,434 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 15:48:57,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:48:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 15:48:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 15:48:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 15:48:57,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 15:48:57,437 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2021-11-19 15:48:57,437 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2021-11-19 15:48:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:48:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:48:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 15:48:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:48:57,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:48:57,439 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 15:48:57,439 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 15:48:57,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 15:48:57,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 15:48:57,439 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 15:48:57,439 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 15:48:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:48:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 15:48:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 15:48:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 15:48:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 15:48:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 15:48:57,441 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 15:48:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2021-11-19 15:48:57,442 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2021-11-19 15:48:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 15:48:57,442 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 15:48:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-11-19 15:48:57,442 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-11-19 15:48:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-11-19 15:48:57,444 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-11-19 15:48:57,943 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:48:57,946 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:49:02,444 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:49:02,460 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:49:02,461 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 15:49:02,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:49:02 BoogieIcfgContainer [2021-11-19 15:49:02,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:49:02,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:49:02,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:49:02,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:49:02,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:48:51" (1/3) ... [2021-11-19 15:49:02,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e995b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:49:02, skipping insertion in model container [2021-11-19 15:49:02,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:56" (2/3) ... [2021-11-19 15:49:02,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e995b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:49:02, skipping insertion in model container [2021-11-19 15:49:02,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:49:02" (3/3) ... [2021-11-19 15:49:02,491 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_reset_harness.i [2021-11-19 15:49:02,498 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:49:02,498 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:49:02,558 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:49:02,566 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 15:49:02,567 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:49:02,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 78 states have (on average 1.2307692307692308) internal successors, (96), 80 states have internal predecessors, (96), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-19 15:49:02,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-19 15:49:02,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:02,602 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:49:02,603 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:49:02,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:02,610 INFO L85 PathProgramCache]: Analyzing trace with hash 676321730, now seen corresponding path program 1 times [2021-11-19 15:49:02,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:49:02,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077005109] [2021-11-19 15:49:02,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:02,633 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:49:02,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:49:02,637 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:49:02,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:49:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:03,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 15:49:03,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:49:04,151 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 15:49:04,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:49:04,339 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 15:49:04,341 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:49:04,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077005109] [2021-11-19 15:49:04,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077005109] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:04,342 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:04,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 15:49:04,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703274475] [2021-11-19 15:49:04,349 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:04,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 15:49:04,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:49:04,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 15:49:04,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:49:04,407 INFO L87 Difference]: Start difference. First operand has 114 states, 78 states have (on average 1.2307692307692308) internal successors, (96), 80 states have internal predecessors, (96), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-19 15:49:04,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:04,474 INFO L93 Difference]: Finished difference Result 224 states and 296 transitions. [2021-11-19 15:49:04,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 15:49:04,479 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 46 [2021-11-19 15:49:04,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:04,490 INFO L225 Difference]: With dead ends: 224 [2021-11-19 15:49:04,490 INFO L226 Difference]: Without dead ends: 105 [2021-11-19 15:49:04,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:49:04,500 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:04,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:49:04,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-19 15:49:04,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-11-19 15:49:04,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 73 states have internal predecessors, (84), 23 states have call successors, (23), 11 states have call predecessors, (23), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-19 15:49:04,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 128 transitions. [2021-11-19 15:49:04,578 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 128 transitions. Word has length 46 [2021-11-19 15:49:04,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:04,579 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 128 transitions. [2021-11-19 15:49:04,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-19 15:49:04,580 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 128 transitions. [2021-11-19 15:49:04,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-19 15:49:04,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:04,584 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:49:04,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:49:04,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:49:04,800 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:49:04,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:04,801 INFO L85 PathProgramCache]: Analyzing trace with hash -570706232, now seen corresponding path program 1 times [2021-11-19 15:49:04,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:49:04,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593562045] [2021-11-19 15:49:04,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:04,806 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:49:04,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:49:04,808 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:49:04,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:49:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:05,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:49:05,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:49:06,201 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:49:06,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:49:06,546 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 15:49:06,547 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:49:06,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593562045] [2021-11-19 15:49:06,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593562045] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:06,547 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:06,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 15:49:06,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885617463] [2021-11-19 15:49:06,548 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:06,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:49:06,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:49:06,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:49:06,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:49:06,553 INFO L87 Difference]: Start difference. First operand 105 states and 128 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-19 15:49:06,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:06,810 INFO L93 Difference]: Finished difference Result 188 states and 232 transitions. [2021-11-19 15:49:06,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:49:06,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 46 [2021-11-19 15:49:06,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:06,816 INFO L225 Difference]: With dead ends: 188 [2021-11-19 15:49:06,816 INFO L226 Difference]: Without dead ends: 108 [2021-11-19 15:49:06,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:49:06,819 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 33 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:06,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 322 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:49:06,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-19 15:49:06,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-11-19 15:49:06,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 73 states have (on average 1.178082191780822) internal successors, (86), 76 states have internal predecessors, (86), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2021-11-19 15:49:06,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 132 transitions. [2021-11-19 15:49:06,841 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 132 transitions. Word has length 46 [2021-11-19 15:49:06,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:06,842 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 132 transitions. [2021-11-19 15:49:06,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-19 15:49:06,843 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 132 transitions. [2021-11-19 15:49:06,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-19 15:49:06,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:06,846 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:49:06,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:49:07,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:49:07,060 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:49:07,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:07,061 INFO L85 PathProgramCache]: Analyzing trace with hash -918947589, now seen corresponding path program 1 times [2021-11-19 15:49:07,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:49:07,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158382545] [2021-11-19 15:49:07,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:07,068 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:49:07,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:49:07,069 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:49:07,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:49:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:08,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 1395 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:49:08,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:49:08,281 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:49:08,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:49:08,471 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 15:49:08,471 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:49:08,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158382545] [2021-11-19 15:49:08,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158382545] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:08,472 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:08,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 15:49:08,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125961302] [2021-11-19 15:49:08,472 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:08,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:49:08,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:49:08,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:49:08,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:49:08,474 INFO L87 Difference]: Start difference. First operand 108 states and 132 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 15:49:08,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:08,550 INFO L93 Difference]: Finished difference Result 201 states and 253 transitions. [2021-11-19 15:49:08,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:49:08,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 52 [2021-11-19 15:49:08,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:08,553 INFO L225 Difference]: With dead ends: 201 [2021-11-19 15:49:08,554 INFO L226 Difference]: Without dead ends: 118 [2021-11-19 15:49:08,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:49:08,556 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 29 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:08,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 365 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:49:08,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-19 15:49:08,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 110. [2021-11-19 15:49:08,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 78 states have internal predecessors, (88), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2021-11-19 15:49:08,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 134 transitions. [2021-11-19 15:49:08,574 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 134 transitions. Word has length 52 [2021-11-19 15:49:08,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:08,574 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 134 transitions. [2021-11-19 15:49:08,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 15:49:08,575 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 134 transitions. [2021-11-19 15:49:08,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-19 15:49:08,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:08,578 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:49:08,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:49:08,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:49:08,792 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:49:08,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:08,793 INFO L85 PathProgramCache]: Analyzing trace with hash -101299139, now seen corresponding path program 1 times [2021-11-19 15:49:08,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:49:08,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008696472] [2021-11-19 15:49:08,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:08,798 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:49:08,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:49:08,800 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:49:08,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:49:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:09,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 15:49:09,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:49:10,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-19 15:49:11,306 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:49:11,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:49:12,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-19 15:49:12,670 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 15:49:12,670 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:49:12,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008696472] [2021-11-19 15:49:12,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008696472] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:12,670 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:12,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 10] imperfect sequences [] total 19 [2021-11-19 15:49:12,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439501190] [2021-11-19 15:49:12,671 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:12,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 15:49:12,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:49:12,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 15:49:12,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-19 15:49:12,674 INFO L87 Difference]: Start difference. First operand 110 states and 134 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 16 states have internal predecessors, (53), 7 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2021-11-19 15:49:14,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:49:15,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:15,964 INFO L93 Difference]: Finished difference Result 216 states and 264 transitions. [2021-11-19 15:49:15,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 15:49:15,965 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 16 states have internal predecessors, (53), 7 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 52 [2021-11-19 15:49:15,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:15,968 INFO L225 Difference]: With dead ends: 216 [2021-11-19 15:49:15,968 INFO L226 Difference]: Without dead ends: 124 [2021-11-19 15:49:15,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-19 15:49:15,970 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 63 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:15,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1161 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 106 Invalid, 1 Unknown, 74 Unchecked, 3.1s Time] [2021-11-19 15:49:15,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-19 15:49:15,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 116. [2021-11-19 15:49:15,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 81 states have (on average 1.1851851851851851) internal successors, (96), 83 states have internal predecessors, (96), 23 states have call successors, (23), 12 states have call predecessors, (23), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2021-11-19 15:49:15,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 142 transitions. [2021-11-19 15:49:15,989 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 142 transitions. Word has length 52 [2021-11-19 15:49:15,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:15,990 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 142 transitions. [2021-11-19 15:49:15,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 16 states have internal predecessors, (53), 7 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2021-11-19 15:49:15,991 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 142 transitions. [2021-11-19 15:49:15,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-19 15:49:15,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:15,994 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:49:16,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:49:16,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:49:16,208 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:49:16,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:16,209 INFO L85 PathProgramCache]: Analyzing trace with hash -891681165, now seen corresponding path program 1 times [2021-11-19 15:49:16,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:49:16,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253982846] [2021-11-19 15:49:16,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:16,211 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:49:16,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:49:16,212 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:49:16,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:49:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:17,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:49:17,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:49:18,207 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:49:18,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:49:18,783 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 15:49:18,784 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:49:18,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253982846] [2021-11-19 15:49:18,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [253982846] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:18,784 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:18,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-19 15:49:18,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797948604] [2021-11-19 15:49:18,785 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:18,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:49:18,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:49:18,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:49:18,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:49:18,787 INFO L87 Difference]: Start difference. First operand 116 states and 142 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 15:49:20,918 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:49:22,929 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:49:24,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:24,456 INFO L93 Difference]: Finished difference Result 232 states and 293 transitions. [2021-11-19 15:49:24,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:49:24,459 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 56 [2021-11-19 15:49:24,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:24,462 INFO L225 Difference]: With dead ends: 232 [2021-11-19 15:49:24,462 INFO L226 Difference]: Without dead ends: 146 [2021-11-19 15:49:24,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:49:24,465 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 70 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:24,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 586 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 2 Unknown, 34 Unchecked, 5.3s Time] [2021-11-19 15:49:24,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-19 15:49:24,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 125. [2021-11-19 15:49:24,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 90 states have (on average 1.2) internal successors, (108), 92 states have internal predecessors, (108), 23 states have call successors, (23), 12 states have call predecessors, (23), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2021-11-19 15:49:24,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 154 transitions. [2021-11-19 15:49:24,492 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 154 transitions. Word has length 56 [2021-11-19 15:49:24,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:24,493 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 154 transitions. [2021-11-19 15:49:24,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 15:49:24,494 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 154 transitions. [2021-11-19 15:49:24,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-19 15:49:24,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:24,497 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:49:24,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-19 15:49:24,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:49:24,703 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:49:24,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:24,704 INFO L85 PathProgramCache]: Analyzing trace with hash -468979339, now seen corresponding path program 1 times [2021-11-19 15:49:24,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:49:24,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759248990] [2021-11-19 15:49:24,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:24,706 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:49:24,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:49:24,707 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:49:24,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:49:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:25,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 15:49:25,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:49:27,949 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 15:49:27,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:49:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 15:49:30,072 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:49:30,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759248990] [2021-11-19 15:49:30,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759248990] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:30,073 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:30,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 19 [2021-11-19 15:49:30,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811256267] [2021-11-19 15:49:30,073 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:30,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 15:49:30,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:49:30,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 15:49:30,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-19 15:49:30,075 INFO L87 Difference]: Start difference. First operand 125 states and 154 transitions. Second operand has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 15:49:32,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:49:36,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:36,538 INFO L93 Difference]: Finished difference Result 240 states and 304 transitions. [2021-11-19 15:49:36,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 15:49:36,542 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 56 [2021-11-19 15:49:36,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:36,545 INFO L225 Difference]: With dead ends: 240 [2021-11-19 15:49:36,545 INFO L226 Difference]: Without dead ends: 144 [2021-11-19 15:49:36,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=115, Invalid=641, Unknown=0, NotChecked=0, Total=756 [2021-11-19 15:49:36,548 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 84 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:36,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 1553 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 308 Invalid, 1 Unknown, 152 Unchecked, 3.7s Time] [2021-11-19 15:49:36,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-19 15:49:36,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 126. [2021-11-19 15:49:36,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 91 states have (on average 1.1758241758241759) internal successors, (107), 93 states have internal predecessors, (107), 23 states have call successors, (23), 12 states have call predecessors, (23), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2021-11-19 15:49:36,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 153 transitions. [2021-11-19 15:49:36,580 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 153 transitions. Word has length 56 [2021-11-19 15:49:36,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:36,581 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 153 transitions. [2021-11-19 15:49:36,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 15:49:36,583 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 153 transitions. [2021-11-19 15:49:36,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-19 15:49:36,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:36,593 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:49:36,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:49:36,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:49:36,812 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:49:36,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:36,813 INFO L85 PathProgramCache]: Analyzing trace with hash -829641551, now seen corresponding path program 1 times [2021-11-19 15:49:36,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:49:36,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819499166] [2021-11-19 15:49:36,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:36,816 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:49:36,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:49:36,817 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:49:36,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 15:49:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:37,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:49:37,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:49:38,036 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 15:49:38,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:49:38,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 15:49:38,367 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:49:38,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819499166] [2021-11-19 15:49:38,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819499166] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:38,368 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:49:38,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 10 [2021-11-19 15:49:38,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136704935] [2021-11-19 15:49:38,369 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:38,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 15:49:38,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:49:38,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 15:49:38,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:49:38,371 INFO L87 Difference]: Start difference. First operand 126 states and 153 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-19 15:49:38,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:38,656 INFO L93 Difference]: Finished difference Result 232 states and 284 transitions. [2021-11-19 15:49:38,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 15:49:38,658 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2021-11-19 15:49:38,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:38,660 INFO L225 Difference]: With dead ends: 232 [2021-11-19 15:49:38,661 INFO L226 Difference]: Without dead ends: 136 [2021-11-19 15:49:38,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:49:38,662 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 14 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:38,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 806 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:49:38,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-19 15:49:38,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 126. [2021-11-19 15:49:38,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 91 states have (on average 1.1758241758241759) internal successors, (107), 93 states have internal predecessors, (107), 23 states have call successors, (23), 12 states have call predecessors, (23), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2021-11-19 15:49:38,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 153 transitions. [2021-11-19 15:49:38,686 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 153 transitions. Word has length 56 [2021-11-19 15:49:38,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:38,686 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 153 transitions. [2021-11-19 15:49:38,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-19 15:49:38,686 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 153 transitions. [2021-11-19 15:49:38,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-19 15:49:38,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:38,691 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:49:38,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:49:38,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:49:38,916 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:49:38,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:38,917 INFO L85 PathProgramCache]: Analyzing trace with hash 452290476, now seen corresponding path program 1 times [2021-11-19 15:49:38,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:49:38,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575120860] [2021-11-19 15:49:38,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:38,920 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:49:38,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:49:38,921 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:49:38,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:50:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:24,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 15:50:24,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:26,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:50:26,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:50:26,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:50:26,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:50:26,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:50:26,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:50:26,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:50:26,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:26,221 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:26,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 118 treesize of output 96 [2021-11-19 15:50:26,352 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:26,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 99 treesize of output 35 [2021-11-19 15:50:26,679 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:50:26,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:30,981 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 15:50:30,982 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:30,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575120860] [2021-11-19 15:50:30,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575120860] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:30,982 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:30,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 7] imperfect sequences [] total 17 [2021-11-19 15:50:30,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892796808] [2021-11-19 15:50:30,983 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:30,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 15:50:30,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:30,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 15:50:30,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=226, Unknown=1, NotChecked=0, Total=272 [2021-11-19 15:50:30,986 INFO L87 Difference]: Start difference. First operand 126 states and 153 transitions. Second operand has 17 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-19 15:50:33,161 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:50:35,170 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:50:37,183 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:50:39,197 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:50:41,208 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:50:50,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:50,776 INFO L93 Difference]: Finished difference Result 159 states and 193 transitions. [2021-11-19 15:50:50,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:50:50,780 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 58 [2021-11-19 15:50:50,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:50,782 INFO L225 Difference]: With dead ends: 159 [2021-11-19 15:50:50,782 INFO L226 Difference]: Without dead ends: 157 [2021-11-19 15:50:50,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=82, Invalid=422, Unknown=2, NotChecked=0, Total=506 [2021-11-19 15:50:50,784 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 42 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 8 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:50,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 1560 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 416 Invalid, 5 Unknown, 45 Unchecked, 16.3s Time] [2021-11-19 15:50:50,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-19 15:50:50,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 147. [2021-11-19 15:50:50,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 106 states have (on average 1.1603773584905661) internal successors, (123), 109 states have internal predecessors, (123), 26 states have call successors, (26), 14 states have call predecessors, (26), 14 states have return successors, (29), 24 states have call predecessors, (29), 24 states have call successors, (29) [2021-11-19 15:50:50,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 178 transitions. [2021-11-19 15:50:50,800 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 178 transitions. Word has length 58 [2021-11-19 15:50:50,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:50,801 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 178 transitions. [2021-11-19 15:50:50,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-19 15:50:50,801 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 178 transitions. [2021-11-19 15:50:50,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 15:50:50,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:50,803 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:50,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:51,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:51,020 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:51,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:51,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1189615206, now seen corresponding path program 1 times [2021-11-19 15:50:51,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:51,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372602557] [2021-11-19 15:50:51,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:51,023 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:51,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:51,024 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:51,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1c2df3-1b4b-443b-9605-f353db367bca/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 15:50:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:58,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 1417 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 15:50:58,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:58,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-19 15:50:58,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 15:50:58,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:50:58,527 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 15:50:58,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 36 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 22 [2021-11-19 15:50:58,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:50:58,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:50:58,666 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 15:50:58,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 36 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 22 [2021-11-19 15:50:58,845 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 15:50:58,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 35 [2021-11-19 15:50:58,854 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 15:50:58,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2021-11-19 15:50:58,948 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 15:50:58,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:59,187 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:59,190 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 545 [2021-11-19 15:50:59,202 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:59,205 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 872 [2021-11-19 15:51:19,142 WARN L227 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 49 DAG size of output: 38 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 15:51:19,144 INFO L354 Elim1Store]: treesize reduction 55, result has 48.1 percent of original size [2021-11-19 15:51:19,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 10335813872 treesize of output 8992588046