./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_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_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/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_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/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_c4c26bce-d1f0-4448-86c4-b404009bc435/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 9248d62da968900adf628e209d21739bec2ffe4f64c1d45016706037787190a6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:35:29,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:35:29,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:35:29,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:35:29,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:35:29,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:35:29,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:35:29,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:35:29,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:35:29,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:35:29,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:35:29,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:35:29,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:35:29,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:35:29,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:35:29,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:35:29,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:35:29,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:35:29,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:35:29,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:35:29,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:35:29,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:35:29,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:35:29,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:35:29,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:35:29,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:35:29,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:35:29,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:35:29,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:35:29,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:35:29,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:35:29,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:35:29,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:35:29,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:35:29,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:35:29,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:35:29,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:35:29,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:35:29,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:35:29,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:35:29,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:35:29,807 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:35:29,859 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:35:29,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:35:29,860 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:35:29,861 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:35:29,861 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:35:29,861 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:35:29,868 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:35:29,868 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:35:29,868 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:35:29,869 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:35:29,870 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:35:29,870 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:35:29,870 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:35:29,870 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:35:29,871 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:35:29,871 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:35:29,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:35:29,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:35:29,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:35:29,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:35:29,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:35:29,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:35:29,873 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:35:29,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:35:29,873 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:35:29,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:35:29,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:35:29,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:35:29,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:35:29,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:35:29,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:35:29,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:35:29,875 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:35:29,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:35:29,875 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:35:29,875 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:35:29,876 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:35:29,876 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_c4c26bce-d1f0-4448-86c4-b404009bc435/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9248d62da968900adf628e209d21739bec2ffe4f64c1d45016706037787190a6 [2021-11-19 14:35:30,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:35:30,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:35:30,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:35:30,208 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:35:30,208 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:35:30,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2021-11-19 14:35:30,300 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/data/766334628/e149d9e3fb3c4ac1aff53d6d82e9e32d/FLAGc74e9fc5d [2021-11-19 14:35:31,167 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:35:31,169 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2021-11-19 14:35:31,226 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/data/766334628/e149d9e3fb3c4ac1aff53d6d82e9e32d/FLAGc74e9fc5d [2021-11-19 14:35:31,576 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/data/766334628/e149d9e3fb3c4ac1aff53d6d82e9e32d [2021-11-19 14:35:31,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:35:31,581 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:35:31,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:35:31,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:35:31,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:35:31,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:35:31" (1/1) ... [2021-11-19 14:35:31,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@132d726f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:31, skipping insertion in model container [2021-11-19 14:35:31,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:35:31" (1/1) ... [2021-11-19 14:35:31,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:35:31,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:35:32,063 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_c4c26bce-d1f0-4448-86c4-b404009bc435/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4496,4509] [2021-11-19 14:35:32,070 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_c4c26bce-d1f0-4448-86c4-b404009bc435/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4556,4569] [2021-11-19 14:35:32,092 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:35:32,097 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:35:33,090 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:33,091 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:33,092 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:33,093 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:33,094 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:33,109 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:33,110 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:33,112 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:33,113 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:33,594 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:35:33,596 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:35:33,597 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:35:33,598 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:35:33,600 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:35:33,601 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:35:33,602 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:35:33,603 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:35:33,604 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:35:33,604 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:35:33,820 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:35:34,009 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:34,009 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:34,108 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:35:34,168 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:35:34,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@42986c08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:34, skipping insertion in model container [2021-11-19 14:35:34,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:35:34,169 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:35:34,172 INFO L158 Benchmark]: Toolchain (without parser) took 2589.26ms. Allocated memory was 119.5MB in the beginning and 157.3MB in the end (delta: 37.7MB). Free memory was 73.5MB in the beginning and 106.8MB in the end (delta: -33.3MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2021-11-19 14:35:34,173 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 119.5MB. Free memory is still 98.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:35:34,174 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2586.22ms. Allocated memory was 119.5MB in the beginning and 157.3MB in the end (delta: 37.7MB). Free memory was 73.4MB in the beginning and 106.8MB in the end (delta: -33.5MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2021-11-19 14:35:34,176 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 119.5MB. Free memory is still 98.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2586.22ms. Allocated memory was 119.5MB in the beginning and 157.3MB in the end (delta: 37.7MB). Free memory was 73.4MB in the beginning and 106.8MB in the end (delta: -33.5MB). Peak memory consumption was 27.8MB. 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_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/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_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/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_c4c26bce-d1f0-4448-86c4-b404009bc435/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 9248d62da968900adf628e209d21739bec2ffe4f64c1d45016706037787190a6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:35:36,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:35:36,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:35:36,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:35:36,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:35:36,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:35:36,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:35:36,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:35:36,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:35:36,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:35:36,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:35:36,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:35:36,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:35:36,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:35:36,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:35:36,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:35:36,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:35:36,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:35:36,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:35:36,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:35:36,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:35:36,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:35:36,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:35:36,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:35:36,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:35:36,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:35:36,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:35:36,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:35:36,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:35:36,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:35:36,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:35:36,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:35:36,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:35:36,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:35:36,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:35:36,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:35:36,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:35:36,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:35:36,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:35:36,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:35:36,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:35:36,725 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:35:36,779 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:35:36,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:35:36,781 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:35:36,781 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:35:36,782 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:35:36,782 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:35:36,782 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:35:36,782 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:35:36,783 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:35:36,783 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:35:36,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:35:36,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:35:36,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:35:36,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:35:36,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:35:36,787 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:35:36,787 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:35:36,787 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:35:36,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:35:36,787 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:35:36,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:35:36,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:35:36,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:35:36,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:35:36,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:35:36,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:35:36,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:35:36,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:35:36,790 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:35:36,790 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:35:36,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:35:36,790 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:35:36,790 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:35:36,791 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_c4c26bce-d1f0-4448-86c4-b404009bc435/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9248d62da968900adf628e209d21739bec2ffe4f64c1d45016706037787190a6 [2021-11-19 14:35:37,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:35:37,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:35:37,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:35:37,282 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:35:37,282 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:35:37,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2021-11-19 14:35:37,380 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/data/5c878c189/1856139b99414a05a724ab01286f2b9c/FLAGe38a83bdd [2021-11-19 14:35:38,507 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:35:38,509 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2021-11-19 14:35:38,564 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/data/5c878c189/1856139b99414a05a724ab01286f2b9c/FLAGe38a83bdd [2021-11-19 14:35:38,900 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/data/5c878c189/1856139b99414a05a724ab01286f2b9c [2021-11-19 14:35:38,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:35:38,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:35:38,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:35:38,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:35:38,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:35:38,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:35:38" (1/1) ... [2021-11-19 14:35:38,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc6dcdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:38, skipping insertion in model container [2021-11-19 14:35:38,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:35:38" (1/1) ... [2021-11-19 14:35:38,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:35:39,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:35:39,369 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_c4c26bce-d1f0-4448-86c4-b404009bc435/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4496,4509] [2021-11-19 14:35:39,379 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_c4c26bce-d1f0-4448-86c4-b404009bc435/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4556,4569] [2021-11-19 14:35:39,408 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:35:39,415 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:35:40,397 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:40,398 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:40,399 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:40,400 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:40,401 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:40,420 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:40,421 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:40,423 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:40,424 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:40,925 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:35:40,926 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:35:40,927 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:35:40,928 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:35:40,930 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:35:40,931 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:35:40,932 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:35:40,932 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:35:40,933 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:35:40,934 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:35:41,161 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:35:41,309 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:41,310 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:41,445 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:35:41,544 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:35:41,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:35:41,679 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_c4c26bce-d1f0-4448-86c4-b404009bc435/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4496,4509] [2021-11-19 14:35:41,680 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_c4c26bce-d1f0-4448-86c4-b404009bc435/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4556,4569] [2021-11-19 14:35:41,682 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:35:41,685 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:35:41,742 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:41,743 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:41,743 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:41,744 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:41,746 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:41,769 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:41,772 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:41,776 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:41,777 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:41,859 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:35:41,860 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:35:41,861 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:35:41,862 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:35:41,863 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:35:41,864 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:35:41,865 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:35:41,865 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:35:41,866 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:35:41,867 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:35:41,901 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:35:41,997 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:41,998 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:42,038 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:35:42,120 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:35:42,149 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_c4c26bce-d1f0-4448-86c4-b404009bc435/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4496,4509] [2021-11-19 14:35:42,149 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_c4c26bce-d1f0-4448-86c4-b404009bc435/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4556,4569] [2021-11-19 14:35:42,151 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:35:42,152 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:35:42,203 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:42,203 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:42,204 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:42,204 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:42,205 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:42,211 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:42,211 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:42,212 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:42,213 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:42,250 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:35:42,251 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:35:42,251 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:35:42,252 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:35:42,253 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:35:42,254 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:35:42,255 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:35:42,255 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:35:42,256 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:35:42,257 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:35:42,312 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:35:42,388 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:42,389 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:42,420 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:35:42,856 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:35:42,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:42 WrapperNode [2021-11-19 14:35:42,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:35:42,858 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:35:42,858 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:35:42,858 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:35:42,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:42" (1/1) ... [2021-11-19 14:35:42,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:42" (1/1) ... [2021-11-19 14:35:43,108 INFO L137 Inliner]: procedures = 713, calls = 2626, calls flagged for inlining = 63, calls inlined = 11, statements flattened = 932 [2021-11-19 14:35:43,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:35:43,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:35:43,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:35:43,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:35:43,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:42" (1/1) ... [2021-11-19 14:35:43,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:42" (1/1) ... [2021-11-19 14:35:43,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:42" (1/1) ... [2021-11-19 14:35:43,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:42" (1/1) ... [2021-11-19 14:35:43,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:42" (1/1) ... [2021-11-19 14:35:43,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:42" (1/1) ... [2021-11-19 14:35:43,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:42" (1/1) ... [2021-11-19 14:35:43,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:35:43,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:35:43,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:35:43,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:35:43,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:42" (1/1) ... [2021-11-19 14:35:43,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:35:43,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:35:43,275 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:35:43,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:35:43,361 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-19 14:35:43,361 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-19 14:35:43,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:35:43,361 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 14:35:43,361 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 14:35:43,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:35:43,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:35:43,363 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-19 14:35:43,364 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-19 14:35:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-19 14:35:43,364 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-19 14:35:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:35:43,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:35:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:35:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:35:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:35:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-19 14:35:43,365 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-19 14:35:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:35:43,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:35:43,366 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 14:35:43,366 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 14:35:43,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:35:43,366 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-19 14:35:43,366 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-19 14:35:43,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:35:43,366 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-19 14:35:43,367 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-19 14:35:43,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 14:35:43,367 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 14:35:43,367 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:35:43,368 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:35:43,368 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-19 14:35:43,368 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-19 14:35:43,368 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-11-19 14:35:43,368 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-11-19 14:35:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:35:43,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:35:43,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:35:43,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:35:43,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:35:43,373 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 14:35:43,374 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 14:35:43,375 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 14:35:43,375 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 14:35:43,784 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:35:43,788 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:35:50,007 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:35:50,017 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:35:50,017 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-19 14:35:50,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:35:50 BoogieIcfgContainer [2021-11-19 14:35:50,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:35:50,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:35:50,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:35:50,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:35:50,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:35:38" (1/3) ... [2021-11-19 14:35:50,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70840aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:35:50, skipping insertion in model container [2021-11-19 14:35:50,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:42" (2/3) ... [2021-11-19 14:35:50,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70840aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:35:50, skipping insertion in model container [2021-11-19 14:35:50,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:35:50" (3/3) ... [2021-11-19 14:35:50,030 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_init_copy_harness.i [2021-11-19 14:35:50,037 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:35:50,037 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:35:50,094 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:35:50,100 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:35:50,101 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:35:50,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 122 states have (on average 1.221311475409836) internal successors, (149), 121 states have internal predecessors, (149), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-11-19 14:35:50,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-19 14:35:50,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:35:50,138 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:35:50,138 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:35:50,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:35:50,144 INFO L85 PathProgramCache]: Analyzing trace with hash -283420546, now seen corresponding path program 1 times [2021-11-19 14:35:50,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:35:50,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654486433] [2021-11-19 14:35:50,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:35:50,169 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:35:50,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:35:50,181 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:35:50,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:35:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:35:51,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:35:51,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:35:51,541 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-19 14:35:51,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:35:51,797 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-19 14:35:51,798 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:35:51,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1654486433] [2021-11-19 14:35:51,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1654486433] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:35:51,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:35:51,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-19 14:35:51,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446852080] [2021-11-19 14:35:51,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:35:51,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:35:51,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:35:51,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:35:51,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:35:51,841 INFO L87 Difference]: Start difference. First operand has 185 states, 122 states have (on average 1.221311475409836) internal successors, (149), 121 states have internal predecessors, (149), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 14:35:51,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:35:51,899 INFO L93 Difference]: Finished difference Result 366 states and 520 transitions. [2021-11-19 14:35:51,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:35:51,902 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 82 [2021-11-19 14:35:51,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:35:51,915 INFO L225 Difference]: With dead ends: 366 [2021-11-19 14:35:51,915 INFO L226 Difference]: Without dead ends: 179 [2021-11-19 14:35:51,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:35:51,926 INFO L933 BasicCegarLoop]: 238 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, 238 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:35:51,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:35:51,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-19 14:35:51,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-11-19 14:35:51,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 114 states have (on average 1.1666666666666667) internal successors, (133), 115 states have internal predecessors, (133), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-19 14:35:51,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 230 transitions. [2021-11-19 14:35:51,998 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 230 transitions. Word has length 82 [2021-11-19 14:35:51,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:35:51,999 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 230 transitions. [2021-11-19 14:35:51,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 14:35:52,000 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 230 transitions. [2021-11-19 14:35:52,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-19 14:35:52,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:35:52,006 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:35:52,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:35:52,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:35:52,207 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:35:52,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:35:52,208 INFO L85 PathProgramCache]: Analyzing trace with hash 426190495, now seen corresponding path program 1 times [2021-11-19 14:35:52,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:35:52,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872300775] [2021-11-19 14:35:52,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:35:52,213 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:35:52,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:35:52,217 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:35:52,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:35:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:35:53,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:35:53,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:35:53,713 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-19 14:35:53,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:35:54,152 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-19 14:35:54,153 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:35:54,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872300775] [2021-11-19 14:35:54,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872300775] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:35:54,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:35:54,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 14:35:54,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126148881] [2021-11-19 14:35:54,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:35:54,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:35:54,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:35:54,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:35:54,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:35:54,157 INFO L87 Difference]: Start difference. First operand 179 states and 230 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-19 14:35:54,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:35:54,461 INFO L93 Difference]: Finished difference Result 347 states and 448 transitions. [2021-11-19 14:35:54,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:35:54,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 92 [2021-11-19 14:35:54,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:35:54,467 INFO L225 Difference]: With dead ends: 347 [2021-11-19 14:35:54,467 INFO L226 Difference]: Without dead ends: 182 [2021-11-19 14:35:54,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:35:54,490 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 67 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:35:54,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 564 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:35:54,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-19 14:35:54,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-11-19 14:35:54,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 116 states have (on average 1.1637931034482758) internal successors, (135), 118 states have internal predecessors, (135), 49 states have call successors, (49), 15 states have call predecessors, (49), 16 states have return successors, (52), 48 states have call predecessors, (52), 48 states have call successors, (52) [2021-11-19 14:35:54,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 236 transitions. [2021-11-19 14:35:54,531 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 236 transitions. Word has length 92 [2021-11-19 14:35:54,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:35:54,536 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 236 transitions. [2021-11-19 14:35:54,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-19 14:35:54,537 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 236 transitions. [2021-11-19 14:35:54,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-19 14:35:54,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:35:54,545 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:35:54,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:35:54,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:35:54,770 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:35:54,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:35:54,770 INFO L85 PathProgramCache]: Analyzing trace with hash -772706796, now seen corresponding path program 1 times [2021-11-19 14:35:54,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:35:54,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864135330] [2021-11-19 14:35:54,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:35:54,774 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:35:54,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:35:54,775 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:35:54,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:35:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:35:55,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:35:55,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:35:56,013 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 14:35:57,276 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-19 14:35:57,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:35:58,409 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 14:35:58,809 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-19 14:35:58,809 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:35:58,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864135330] [2021-11-19 14:35:58,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864135330] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:35:58,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:35:58,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 19 [2021-11-19 14:35:58,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578167209] [2021-11-19 14:35:58,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:35:58,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:35:58,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:35:58,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:35:58,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:35:58,812 INFO L87 Difference]: Start difference. First operand 182 states and 236 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 10 states have internal predecessors, (53), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-19 14:36:00,986 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:36:03,480 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:36:03,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:03,753 INFO L93 Difference]: Finished difference Result 370 states and 476 transitions. [2021-11-19 14:36:03,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:36:03,755 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 10 states have internal predecessors, (53), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 98 [2021-11-19 14:36:03,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:03,758 INFO L225 Difference]: With dead ends: 370 [2021-11-19 14:36:03,758 INFO L226 Difference]: Without dead ends: 195 [2021-11-19 14:36:03,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:36:03,761 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 23 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:03,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 1877 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 2 Unknown, 97 Unchecked, 4.7s Time] [2021-11-19 14:36:03,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-19 14:36:03,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-11-19 14:36:03,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 128 states have (on average 1.171875) internal successors, (150), 130 states have internal predecessors, (150), 49 states have call successors, (49), 16 states have call predecessors, (49), 17 states have return successors, (53), 48 states have call predecessors, (53), 48 states have call successors, (53) [2021-11-19 14:36:03,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 252 transitions. [2021-11-19 14:36:03,790 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 252 transitions. Word has length 98 [2021-11-19 14:36:03,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:03,792 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 252 transitions. [2021-11-19 14:36:03,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 10 states have internal predecessors, (53), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-19 14:36:03,792 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 252 transitions. [2021-11-19 14:36:03,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-19 14:36:03,802 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:03,803 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:03,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:04,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:04,025 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:36:04,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:04,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1504674222, now seen corresponding path program 1 times [2021-11-19 14:36:04,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:04,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123358779] [2021-11-19 14:36:04,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:04,028 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:04,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:04,029 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:04,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:36:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:04,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:36:04,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:05,260 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-19 14:36:05,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:05,567 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-19 14:36:05,568 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:05,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123358779] [2021-11-19 14:36:05,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123358779] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:36:05,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:36:05,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-19 14:36:05,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601214400] [2021-11-19 14:36:05,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:05,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:36:05,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:05,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:36:05,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:36:05,570 INFO L87 Difference]: Start difference. First operand 195 states and 252 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 14:36:05,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:05,648 INFO L93 Difference]: Finished difference Result 373 states and 487 transitions. [2021-11-19 14:36:05,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:36:05,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 98 [2021-11-19 14:36:05,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:05,652 INFO L225 Difference]: With dead ends: 373 [2021-11-19 14:36:05,652 INFO L226 Difference]: Without dead ends: 201 [2021-11-19 14:36:05,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 192 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 14:36:05,654 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 20 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:05,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 682 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:36:05,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-19 14:36:05,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 189. [2021-11-19 14:36:05,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 123 states have (on average 1.170731707317073) internal successors, (144), 124 states have internal predecessors, (144), 49 states have call successors, (49), 16 states have call predecessors, (49), 16 states have return successors, (52), 48 states have call predecessors, (52), 48 states have call successors, (52) [2021-11-19 14:36:05,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 245 transitions. [2021-11-19 14:36:05,677 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 245 transitions. Word has length 98 [2021-11-19 14:36:05,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:05,678 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 245 transitions. [2021-11-19 14:36:05,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 14:36:05,678 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 245 transitions. [2021-11-19 14:36:05,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-19 14:36:05,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:05,681 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:05,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:05,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:05,897 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:36:05,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:05,898 INFO L85 PathProgramCache]: Analyzing trace with hash 36818188, now seen corresponding path program 1 times [2021-11-19 14:36:05,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:05,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883108353] [2021-11-19 14:36:05,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:05,900 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:05,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:05,901 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:05,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:36:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:06,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:36:06,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:07,796 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-19 14:36:07,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:08,466 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-19 14:36:08,467 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:08,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883108353] [2021-11-19 14:36:08,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883108353] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:36:08,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:36:08,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-19 14:36:08,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929017477] [2021-11-19 14:36:08,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:08,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:36:08,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:08,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:36:08,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:36:08,469 INFO L87 Difference]: Start difference. First operand 189 states and 245 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 14:36:10,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:36:12,619 WARN L515 Checker$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 14:36:15,540 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:36:17,554 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:36:18,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:18,064 INFO L93 Difference]: Finished difference Result 379 states and 500 transitions. [2021-11-19 14:36:18,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:36:18,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 102 [2021-11-19 14:36:18,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:18,072 INFO L225 Difference]: With dead ends: 379 [2021-11-19 14:36:18,073 INFO L226 Difference]: Without dead ends: 209 [2021-11-19 14:36:18,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:36:18,075 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 42 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:18,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 833 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 4 Unknown, 39 Unchecked, 9.4s Time] [2021-11-19 14:36:18,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-19 14:36:18,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 198. [2021-11-19 14:36:18,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 132 states have (on average 1.1818181818181819) internal successors, (156), 133 states have internal predecessors, (156), 49 states have call successors, (49), 16 states have call predecessors, (49), 16 states have return successors, (52), 48 states have call predecessors, (52), 48 states have call successors, (52) [2021-11-19 14:36:18,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 257 transitions. [2021-11-19 14:36:18,095 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 257 transitions. Word has length 102 [2021-11-19 14:36:18,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:18,096 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 257 transitions. [2021-11-19 14:36:18,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 14:36:18,097 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 257 transitions. [2021-11-19 14:36:18,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-19 14:36:18,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:18,099 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:18,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:18,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:18,325 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:36:18,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:18,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1179335538, now seen corresponding path program 1 times [2021-11-19 14:36:18,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:18,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376298727] [2021-11-19 14:36:18,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:18,329 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:18,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:18,330 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:18,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:36:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:19,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 1490 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 14:36:19,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:21,485 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-19 14:36:21,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:23,653 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-19 14:36:23,654 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:23,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376298727] [2021-11-19 14:36:23,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376298727] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:36:23,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:36:23,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 19 [2021-11-19 14:36:23,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613992296] [2021-11-19 14:36:23,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:23,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:36:23,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:23,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:36:23,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:36:23,657 INFO L87 Difference]: Start difference. First operand 198 states and 257 transitions. Second operand has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-19 14:36:25,757 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:36:27,767 WARN L515 Checker$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 14:36:32,758 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:36:34,774 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:36:35,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:35,687 INFO L93 Difference]: Finished difference Result 387 states and 513 transitions. [2021-11-19 14:36:35,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:36:35,690 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 102 [2021-11-19 14:36:35,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:35,692 INFO L225 Difference]: With dead ends: 387 [2021-11-19 14:36:35,692 INFO L226 Difference]: Without dead ends: 207 [2021-11-19 14:36:35,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-19 14:36:35,694 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 38 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 309 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:35,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 2170 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 244 Invalid, 4 Unknown, 309 Unchecked, 10.3s Time] [2021-11-19 14:36:35,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-19 14:36:35,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 203. [2021-11-19 14:36:35,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 136 states have (on average 1.161764705882353) internal successors, (158), 138 states have internal predecessors, (158), 49 states have call successors, (49), 16 states have call predecessors, (49), 17 states have return successors, (57), 48 states have call predecessors, (57), 48 states have call successors, (57) [2021-11-19 14:36:35,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 264 transitions. [2021-11-19 14:36:35,711 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 264 transitions. Word has length 102 [2021-11-19 14:36:35,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:35,712 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 264 transitions. [2021-11-19 14:36:35,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-19 14:36:35,712 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 264 transitions. [2021-11-19 14:36:35,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-19 14:36:35,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:35,714 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:35,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:35,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:35,937 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:36:35,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:35,938 INFO L85 PathProgramCache]: Analyzing trace with hash 113718986, now seen corresponding path program 1 times [2021-11-19 14:36:35,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:35,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451726833] [2021-11-19 14:36:35,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:35,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:35,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:35,941 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:35,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:36:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:36,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:36:36,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:37,160 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-19 14:36:37,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:37,414 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-19 14:36:37,414 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:37,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451726833] [2021-11-19 14:36:37,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451726833] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:36:37,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:36:37,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-19 14:36:37,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969763390] [2021-11-19 14:36:37,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:37,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:36:37,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:37,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:36:37,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:36:37,416 INFO L87 Difference]: Start difference. First operand 203 states and 264 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 14:36:37,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:37,478 INFO L93 Difference]: Finished difference Result 391 states and 511 transitions. [2021-11-19 14:36:37,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:36:37,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 102 [2021-11-19 14:36:37,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:37,484 INFO L225 Difference]: With dead ends: 391 [2021-11-19 14:36:37,484 INFO L226 Difference]: Without dead ends: 207 [2021-11-19 14:36:37,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 200 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 14:36:37,486 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 34 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:37,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 673 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:36:37,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-19 14:36:37,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 199. [2021-11-19 14:36:37,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 132 states have (on average 1.143939393939394) internal successors, (151), 134 states have internal predecessors, (151), 49 states have call successors, (49), 16 states have call predecessors, (49), 17 states have return successors, (57), 48 states have call predecessors, (57), 48 states have call successors, (57) [2021-11-19 14:36:37,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 257 transitions. [2021-11-19 14:36:37,504 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 257 transitions. Word has length 102 [2021-11-19 14:36:37,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:37,505 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 257 transitions. [2021-11-19 14:36:37,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 14:36:37,505 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 257 transitions. [2021-11-19 14:36:37,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-19 14:36:37,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:37,507 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:37,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:37,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:37,714 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:36:37,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:37,715 INFO L85 PathProgramCache]: Analyzing trace with hash 2022176776, now seen corresponding path program 1 times [2021-11-19 14:36:37,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:37,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713715024] [2021-11-19 14:36:37,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:37,717 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:37,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:37,718 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:37,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:36:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:38,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:36:38,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:38,986 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-19 14:36:38,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:39,487 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-19 14:36:39,487 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:39,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713715024] [2021-11-19 14:36:39,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713715024] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:36:39,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:36:39,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-19 14:36:39,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082733302] [2021-11-19 14:36:39,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:39,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:36:39,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:39,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:36:39,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:36:39,490 INFO L87 Difference]: Start difference. First operand 199 states and 257 transitions. Second operand has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-19 14:36:40,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:40,080 INFO L93 Difference]: Finished difference Result 390 states and 509 transitions. [2021-11-19 14:36:40,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:36:40,081 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 102 [2021-11-19 14:36:40,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:40,084 INFO L225 Difference]: With dead ends: 390 [2021-11-19 14:36:40,084 INFO L226 Difference]: Without dead ends: 208 [2021-11-19 14:36:40,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:36:40,086 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 12 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:40,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1673 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:36:40,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-19 14:36:40,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 199. [2021-11-19 14:36:40,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 132 states have (on average 1.143939393939394) internal successors, (151), 134 states have internal predecessors, (151), 49 states have call successors, (49), 16 states have call predecessors, (49), 17 states have return successors, (57), 48 states have call predecessors, (57), 48 states have call successors, (57) [2021-11-19 14:36:40,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 257 transitions. [2021-11-19 14:36:40,105 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 257 transitions. Word has length 102 [2021-11-19 14:36:40,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:40,105 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 257 transitions. [2021-11-19 14:36:40,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-19 14:36:40,106 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 257 transitions. [2021-11-19 14:36:40,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-19 14:36:40,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:40,108 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:40,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:40,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:40,321 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:36:40,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:40,322 INFO L85 PathProgramCache]: Analyzing trace with hash -414923261, now seen corresponding path program 1 times [2021-11-19 14:36:40,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:40,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134773731] [2021-11-19 14:36:40,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:40,323 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:40,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:40,324 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:40,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:36:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:41,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:36:41,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:41,554 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-19 14:36:41,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:41,978 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-19 14:36:41,979 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:41,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134773731] [2021-11-19 14:36:41,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134773731] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:36:41,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:36:41,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2021-11-19 14:36:41,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53398576] [2021-11-19 14:36:41,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:41,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:36:41,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:41,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:36:41,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:36:41,981 INFO L87 Difference]: Start difference. First operand 199 states and 257 transitions. Second operand has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 14:36:44,142 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:36:44,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:44,517 INFO L93 Difference]: Finished difference Result 397 states and 514 transitions. [2021-11-19 14:36:44,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:36:44,518 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 104 [2021-11-19 14:36:44,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:44,521 INFO L225 Difference]: With dead ends: 397 [2021-11-19 14:36:44,521 INFO L226 Difference]: Without dead ends: 229 [2021-11-19 14:36:44,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:36:44,523 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 81 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:44,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 832 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 54 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 14:36:44,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-11-19 14:36:44,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 199. [2021-11-19 14:36:44,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 132 states have (on average 1.143939393939394) internal successors, (151), 134 states have internal predecessors, (151), 49 states have call successors, (49), 16 states have call predecessors, (49), 17 states have return successors, (56), 48 states have call predecessors, (56), 48 states have call successors, (56) [2021-11-19 14:36:44,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 256 transitions. [2021-11-19 14:36:44,542 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 256 transitions. Word has length 104 [2021-11-19 14:36:44,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:44,543 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 256 transitions. [2021-11-19 14:36:44,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 14:36:44,543 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 256 transitions. [2021-11-19 14:36:44,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 14:36:44,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:44,545 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:44,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:44,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:44,761 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:36:44,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:44,762 INFO L85 PathProgramCache]: Analyzing trace with hash 24902776, now seen corresponding path program 1 times [2021-11-19 14:36:44,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:44,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780301384] [2021-11-19 14:36:44,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:44,764 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:44,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:44,764 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:44,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:36:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:45,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-19 14:36:45,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:49,501 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 50 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-19 14:36:49,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:37:04,104 WARN L227 SmtUtils]: Spent 11.28s on a formula simplification. DAG size of input: 526 DAG size of output: 272 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 14:37:04,110 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-19 14:37:04,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 132 treesize of output 771 [2021-11-19 14:45:58,117 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-19 14:45:58,118 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:58,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780301384] [2021-11-19 14:45:58,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780301384] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:45:58,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [967681710] [2021-11-19 14:45:58,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:58,119 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:45:58,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:45:58,126 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:45:58,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-19 14:45:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:58,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:45:58,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:59,606 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-19 14:45:59,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:00,536 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-19 14:46:00,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [967681710] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:00,536 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:46:00,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [12, 10] total 26 [2021-11-19 14:46:00,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85590104] [2021-11-19 14:46:00,537 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:00,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:46:00,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:00,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:46:00,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2021-11-19 14:46:00,540 INFO L87 Difference]: Start difference. First operand 199 states and 256 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 14:46:00,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:00,784 INFO L93 Difference]: Finished difference Result 285 states and 360 transitions. [2021-11-19 14:46:00,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:46:00,785 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 110 [2021-11-19 14:46:00,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:00,788 INFO L225 Difference]: With dead ends: 285 [2021-11-19 14:46:00,788 INFO L226 Difference]: Without dead ends: 193 [2021-11-19 14:46:00,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 402 SyntacticMatches, 10 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2021-11-19 14:46:00,791 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 1 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2032 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:00,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 2032 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:46:00,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-19 14:46:00,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2021-11-19 14:46:00,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 128 states have (on average 1.1328125) internal successors, (145), 130 states have internal predecessors, (145), 47 states have call successors, (47), 16 states have call predecessors, (47), 17 states have return successors, (54), 46 states have call predecessors, (54), 46 states have call successors, (54) [2021-11-19 14:46:00,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 246 transitions. [2021-11-19 14:46:00,806 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 246 transitions. Word has length 110 [2021-11-19 14:46:00,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:00,807 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 246 transitions. [2021-11-19 14:46:00,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 14:46:00,808 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 246 transitions. [2021-11-19 14:46:00,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 14:46:00,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:00,810 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:00,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:01,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:01,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:46:01,232 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:01,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:01,233 INFO L85 PathProgramCache]: Analyzing trace with hash 524766110, now seen corresponding path program 1 times [2021-11-19 14:46:01,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:01,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088314673] [2021-11-19 14:46:01,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:01,235 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:01,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:01,236 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:01,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c26bce-d1f0-4448-86c4-b404009bc435/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:46:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:02,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 1518 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-19 14:46:02,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:06,157 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 50 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-19 14:46:06,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:21,780 WARN L227 SmtUtils]: Spent 12.16s on a formula simplification. DAG size of input: 526 DAG size of output: 272 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 14:46:21,782 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-19 14:46:21,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 132 treesize of output 771