./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_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_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/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_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/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_7299aebe-25a0-434a-9f9f-e1583c16d65c/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 13ec24500153ff48401c44b6cbf6e64bbffda498093f21927cfcfb52ad2376ab --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:01:58,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:01:58,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:01:58,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:01:58,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:01:58,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:01:58,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:01:58,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:01:58,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:01:58,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:01:58,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:01:58,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:01:58,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:01:58,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:01:58,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:01:58,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:01:58,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:01:58,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:01:58,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:01:58,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:01:58,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:01:58,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:01:58,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:01:58,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:01:58,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:01:58,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:01:58,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:01:58,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:01:58,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:01:58,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:01:58,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:01:58,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:01:58,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:01:58,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:01:58,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:01:58,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:01:58,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:01:58,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:01:58,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:01:58,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:01:58,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:01:58,930 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:01:58,989 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:01:58,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:01:58,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:01:58,991 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:01:58,991 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:01:58,992 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:01:58,992 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:01:58,992 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:01:58,992 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:01:58,992 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:01:58,994 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:01:58,994 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:01:58,994 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:01:58,994 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:01:58,994 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:01:58,995 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:01:58,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:01:58,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:01:58,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:01:58,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:01:58,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:01:58,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:01:58,997 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:01:58,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:01:58,997 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:01:58,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:01:58,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:01:58,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:01:58,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:01:59,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:01:59,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:01:59,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:01:59,000 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:01:59,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:01:59,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:01:59,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:01:59,001 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:01:59,001 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_7299aebe-25a0-434a-9f9f-e1583c16d65c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ec24500153ff48401c44b6cbf6e64bbffda498093f21927cfcfb52ad2376ab [2021-11-19 14:01:59,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:01:59,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:01:59,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:01:59,286 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:01:59,287 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:01:59,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i [2021-11-19 14:01:59,343 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/data/7966e2d60/19de5f761f7e4559b2db377184bfb800/FLAG16d9e37d5 [2021-11-19 14:02:00,206 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:02:00,208 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i [2021-11-19 14:02:00,254 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/data/7966e2d60/19de5f761f7e4559b2db377184bfb800/FLAG16d9e37d5 [2021-11-19 14:02:00,674 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/data/7966e2d60/19de5f761f7e4559b2db377184bfb800 [2021-11-19 14:02:00,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:02:00,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:02:00,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:02:00,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:02:00,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:02:00,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:02:00" (1/1) ... [2021-11-19 14:02:00,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ee679cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:00, skipping insertion in model container [2021-11-19 14:02:00,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:02:00" (1/1) ... [2021-11-19 14:02:00,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:02:00,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:02:01,108 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_7299aebe-25a0-434a-9f9f-e1583c16d65c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4498,4511] [2021-11-19 14:02:01,115 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_7299aebe-25a0-434a-9f9f-e1583c16d65c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4558,4571] [2021-11-19 14:02:01,142 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:02:01,148 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:02:02,165 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:02,166 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:02,167 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:02,168 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:02,169 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:02,183 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:02,183 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:02,185 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:02,186 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:02,569 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:02:02,571 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:02:02,572 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:02:02,573 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:02:02,574 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:02:02,575 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:02:02,576 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:02:02,577 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:02:02,577 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:02:02,578 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:02:02,801 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:02:02,941 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:02,941 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:03,011 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:02:03,085 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 14:02:03,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@75254d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:03, skipping insertion in model container [2021-11-19 14:02:03,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:02:03,088 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:02:03,090 INFO L158 Benchmark]: Toolchain (without parser) took 2411.14ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 58.4MB in the beginning and 61.2MB in the end (delta: -2.9MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2021-11-19 14:02:03,091 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 86.0MB. Free memory is still 65.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:02:03,092 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2408.97ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 58.2MB in the beginning and 61.2MB in the end (delta: -3.0MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2021-11-19 14:02:03,094 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 86.0MB. Free memory is still 65.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2408.97ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 58.2MB in the beginning and 61.2MB in the end (delta: -3.0MB). Peak memory consumption was 27.9MB. 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_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/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_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/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_7299aebe-25a0-434a-9f9f-e1583c16d65c/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 13ec24500153ff48401c44b6cbf6e64bbffda498093f21927cfcfb52ad2376ab --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:02:05,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:02:05,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:02:05,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:02:05,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:02:05,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:02:05,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:02:05,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:02:05,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:02:05,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:02:05,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:02:05,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:02:05,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:02:05,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:02:05,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:02:05,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:02:05,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:02:05,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:02:05,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:02:05,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:02:05,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:02:05,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:02:05,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:02:05,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:02:05,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:02:05,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:02:05,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:02:05,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:02:05,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:02:05,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:02:05,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:02:05,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:02:05,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:02:05,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:02:05,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:02:05,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:02:05,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:02:05,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:02:05,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:02:05,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:02:05,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:02:05,444 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:02:05,494 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:02:05,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:02:05,496 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:02:05,497 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:02:05,497 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:02:05,497 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:02:05,497 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:02:05,497 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:02:05,498 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:02:05,498 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:02:05,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:02:05,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:02:05,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:02:05,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:02:05,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:02:05,501 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:02:05,501 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:02:05,501 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:02:05,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:02:05,502 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:02:05,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:02:05,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:02:05,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:02:05,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:02:05,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:02:05,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:02:05,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:02:05,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:02:05,504 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:02:05,504 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:02:05,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:02:05,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:02:05,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:02:05,505 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_7299aebe-25a0-434a-9f9f-e1583c16d65c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ec24500153ff48401c44b6cbf6e64bbffda498093f21927cfcfb52ad2376ab [2021-11-19 14:02:05,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:02:05,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:02:05,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:02:05,878 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:02:05,879 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:02:05,880 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i [2021-11-19 14:02:05,950 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/data/93c981ac2/e7b2a7d654d94b4cba98b3edc36ae45e/FLAGbbbcf474c [2021-11-19 14:02:06,867 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:02:06,868 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i [2021-11-19 14:02:06,912 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/data/93c981ac2/e7b2a7d654d94b4cba98b3edc36ae45e/FLAGbbbcf474c [2021-11-19 14:02:07,343 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/data/93c981ac2/e7b2a7d654d94b4cba98b3edc36ae45e [2021-11-19 14:02:07,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:02:07,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:02:07,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:02:07,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:02:07,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:02:07,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:02:07" (1/1) ... [2021-11-19 14:02:07,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d9a3de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:07, skipping insertion in model container [2021-11-19 14:02:07,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:02:07" (1/1) ... [2021-11-19 14:02:07,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:02:07,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:02:07,793 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_7299aebe-25a0-434a-9f9f-e1583c16d65c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4498,4511] [2021-11-19 14:02:07,803 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_7299aebe-25a0-434a-9f9f-e1583c16d65c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4558,4571] [2021-11-19 14:02:07,835 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:02:07,843 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:02:08,919 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:08,919 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:08,922 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:08,923 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:08,926 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:08,940 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:08,941 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:08,943 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:08,943 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:09,325 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:02:09,326 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:02:09,328 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:02:09,329 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:02:09,331 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:02:09,331 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:02:09,332 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:02:09,333 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:02:09,334 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:02:09,335 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:02:09,503 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:02:09,601 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:09,601 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:09,710 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:02:09,805 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:02:09,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:02:09,908 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_7299aebe-25a0-434a-9f9f-e1583c16d65c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4498,4511] [2021-11-19 14:02:09,909 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_7299aebe-25a0-434a-9f9f-e1583c16d65c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4558,4571] [2021-11-19 14:02:09,911 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:02:09,914 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:02:09,984 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:09,985 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:09,985 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:09,986 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:09,987 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:10,004 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:10,006 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:10,007 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:10,010 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:10,075 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:02:10,075 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:02:10,077 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:02:10,078 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:02:10,078 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:02:10,079 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:02:10,080 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:02:10,080 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:02:10,081 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:02:10,082 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:02:10,108 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:02:10,186 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:10,187 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:10,246 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:02:10,294 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:02:10,319 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_7299aebe-25a0-434a-9f9f-e1583c16d65c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4498,4511] [2021-11-19 14:02:10,320 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_7299aebe-25a0-434a-9f9f-e1583c16d65c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4558,4571] [2021-11-19 14:02:10,322 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:02:10,323 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:02:10,368 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:10,368 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:10,368 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:10,369 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:10,369 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:10,376 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:10,376 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:10,377 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:10,378 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:10,411 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:02:10,412 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:02:10,414 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:02:10,415 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:02:10,415 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:02:10,416 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:02:10,416 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:02:10,418 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:02:10,418 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:02:10,418 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:02:10,466 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:02:10,533 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:10,534 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:02:10,565 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:02:10,966 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:02:10,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:10 WrapperNode [2021-11-19 14:02:10,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:02:10,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:02:10,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:02:10,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:02:10,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:10" (1/1) ... [2021-11-19 14:02:11,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:10" (1/1) ... [2021-11-19 14:02:11,221 INFO L137 Inliner]: procedures = 712, calls = 2641, calls flagged for inlining = 61, calls inlined = 9, statements flattened = 865 [2021-11-19 14:02:11,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:02:11,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:02:11,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:02:11,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:02:11,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:10" (1/1) ... [2021-11-19 14:02:11,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:10" (1/1) ... [2021-11-19 14:02:11,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:10" (1/1) ... [2021-11-19 14:02:11,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:10" (1/1) ... [2021-11-19 14:02:11,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:10" (1/1) ... [2021-11-19 14:02:11,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:10" (1/1) ... [2021-11-19 14:02:11,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:10" (1/1) ... [2021-11-19 14:02:11,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:02:11,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:02:11,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:02:11,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:02:11,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:10" (1/1) ... [2021-11-19 14:02:11,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:02:11,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:02:11,405 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:02:11,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:02:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-19 14:02:11,461 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-19 14:02:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-19 14:02:11,461 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-19 14:02:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:02:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 14:02:11,462 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 14:02:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:02:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:02:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:02:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:02:11,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:02:11,463 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_from_buf [2021-11-19 14:02:11,463 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_from_buf [2021-11-19 14:02:11,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:02:11,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:02:11,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:02:11,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:02:11,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:02:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 14:02:11,464 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 14:02:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:02:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-19 14:02:11,464 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-19 14:02:11,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:02:11,465 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:02:11,465 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:02:11,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:02:11,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:02:11,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:02:11,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:02:11,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:02:11,466 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 14:02:11,466 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 14:02:11,466 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 14:02:11,466 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 14:02:11,797 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:02:11,798 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:02:15,644 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:02:15,660 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:02:15,661 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 14:02:15,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:02:15 BoogieIcfgContainer [2021-11-19 14:02:15,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:02:15,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:02:15,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:02:15,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:02:15,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:02:07" (1/3) ... [2021-11-19 14:02:15,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75477da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:02:15, skipping insertion in model container [2021-11-19 14:02:15,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:10" (2/3) ... [2021-11-19 14:02:15,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75477da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:02:15, skipping insertion in model container [2021-11-19 14:02:15,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:02:15" (3/3) ... [2021-11-19 14:02:15,685 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_from_buf_harness.i [2021-11-19 14:02:15,690 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:02:15,691 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:02:15,765 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:02:15,771 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 14:02:15,772 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:02:15,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 88 states have (on average 1.25) internal successors, (110), 89 states have internal predecessors, (110), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-19 14:02:15,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 14:02:15,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:15,810 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-19 14:02:15,810 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:02:15,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:15,817 INFO L85 PathProgramCache]: Analyzing trace with hash -76668790, now seen corresponding path program 1 times [2021-11-19 14:02:15,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:15,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896025440] [2021-11-19 14:02:15,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:15,838 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:15,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:15,841 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:15,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:02:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:16,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:02:16,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:17,031 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-19 14:02:17,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:17,227 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-19 14:02:17,228 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:17,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896025440] [2021-11-19 14:02:17,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896025440] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:17,229 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:17,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:02:17,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69673443] [2021-11-19 14:02:17,232 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:17,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:02:17,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:17,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:02:17,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:02:17,279 INFO L87 Difference]: Start difference. First operand has 128 states, 88 states have (on average 1.25) internal successors, (110), 89 states have internal predecessors, (110), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:02:17,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:17,350 INFO L93 Difference]: Finished difference Result 252 states and 347 transitions. [2021-11-19 14:02:17,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:02:17,352 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 65 [2021-11-19 14:02:17,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:17,368 INFO L225 Difference]: With dead ends: 252 [2021-11-19 14:02:17,369 INFO L226 Difference]: Without dead ends: 121 [2021-11-19 14:02:17,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 128 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 14:02:17,380 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:17,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:02:17,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-19 14:02:17,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-11-19 14:02:17,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 82 states have (on average 1.2195121951219512) internal successors, (100), 83 states have internal predecessors, (100), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-19 14:02:17,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 155 transitions. [2021-11-19 14:02:17,432 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 155 transitions. Word has length 65 [2021-11-19 14:02:17,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:17,433 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 155 transitions. [2021-11-19 14:02:17,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:02:17,433 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 155 transitions. [2021-11-19 14:02:17,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 14:02:17,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:17,437 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-19 14:02:17,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:17,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:17,643 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:02:17,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:17,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1064942850, now seen corresponding path program 1 times [2021-11-19 14:02:17,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:17,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658962543] [2021-11-19 14:02:17,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:17,647 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:17,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:17,649 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:17,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:02:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:18,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:02:18,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:18,868 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 14:02:18,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:19,248 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-19 14:02:19,248 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:19,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658962543] [2021-11-19 14:02:19,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658962543] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:02:19,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:02:19,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 14:02:19,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687313671] [2021-11-19 14:02:19,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:19,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:02:19,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:19,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:02:19,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:02:19,254 INFO L87 Difference]: Start difference. First operand 121 states and 155 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-19 14:02:19,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:19,459 INFO L93 Difference]: Finished difference Result 220 states and 286 transitions. [2021-11-19 14:02:19,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:02:19,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 65 [2021-11-19 14:02:19,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:19,470 INFO L225 Difference]: With dead ends: 220 [2021-11-19 14:02:19,470 INFO L226 Difference]: Without dead ends: 124 [2021-11-19 14:02:19,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 125 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 14:02:19,476 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 47 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:19,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 386 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:02:19,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-19 14:02:19,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-11-19 14:02:19,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 84 states have (on average 1.2142857142857142) internal successors, (102), 86 states have internal predecessors, (102), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2021-11-19 14:02:19,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 158 transitions. [2021-11-19 14:02:19,510 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 158 transitions. Word has length 65 [2021-11-19 14:02:19,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:19,511 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 158 transitions. [2021-11-19 14:02:19,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-19 14:02:19,511 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 158 transitions. [2021-11-19 14:02:19,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 14:02:19,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:19,520 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-19 14:02:19,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:19,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:19,743 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:02:19,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:19,743 INFO L85 PathProgramCache]: Analyzing trace with hash 422207533, now seen corresponding path program 1 times [2021-11-19 14:02:19,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:19,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275423189] [2021-11-19 14:02:19,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:19,748 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:19,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:19,749 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:19,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:02:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:20,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:02:20,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:21,075 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 14:02:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 14:02:22,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:23,044 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 14:02:23,356 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-19 14:02:23,356 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:23,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1275423189] [2021-11-19 14:02:23,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1275423189] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:02:23,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:02:23,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 19 [2021-11-19 14:02:23,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468378998] [2021-11-19 14:02:23,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:23,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:02:23,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:23,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:02:23,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:02:23,359 INFO L87 Difference]: Start difference. First operand 124 states and 158 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 10 states have internal predecessors, (45), 5 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-19 14:02:23,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:23,679 INFO L93 Difference]: Finished difference Result 243 states and 311 transitions. [2021-11-19 14:02:23,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:02:23,681 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 10 states have internal predecessors, (45), 5 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 71 [2021-11-19 14:02:23,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:23,684 INFO L225 Difference]: With dead ends: 243 [2021-11-19 14:02:23,684 INFO L226 Difference]: Without dead ends: 137 [2021-11-19 14:02:23,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:02:23,686 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 24 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:23,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 999 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 60 Unchecked, 0.2s Time] [2021-11-19 14:02:23,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-19 14:02:23,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-11-19 14:02:23,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 96 states have (on average 1.21875) internal successors, (117), 98 states have internal predecessors, (117), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2021-11-19 14:02:23,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 174 transitions. [2021-11-19 14:02:23,723 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 174 transitions. Word has length 71 [2021-11-19 14:02:23,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:23,723 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 174 transitions. [2021-11-19 14:02:23,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 10 states have internal predecessors, (45), 5 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-19 14:02:23,724 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 174 transitions. [2021-11-19 14:02:23,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 14:02:23,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:23,728 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-19 14:02:23,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:23,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:23,955 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:02:23,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:23,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1423159633, now seen corresponding path program 1 times [2021-11-19 14:02:23,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:23,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358227433] [2021-11-19 14:02:23,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:23,957 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:23,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:23,958 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:23,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:02:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:24,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:02:24,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:25,092 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 14:02:25,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:25,273 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-19 14:02:25,273 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:25,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358227433] [2021-11-19 14:02:25,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358227433] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:02:25,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:02:25,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-19 14:02:25,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908334108] [2021-11-19 14:02:25,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:25,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:02:25,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:25,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:02:25,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:02:25,276 INFO L87 Difference]: Start difference. First operand 137 states and 174 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 14:02:25,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:25,344 INFO L93 Difference]: Finished difference Result 246 states and 320 transitions. [2021-11-19 14:02:25,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:02:25,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 71 [2021-11-19 14:02:25,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:25,351 INFO L225 Difference]: With dead ends: 246 [2021-11-19 14:02:25,351 INFO L226 Difference]: Without dead ends: 143 [2021-11-19 14:02:25,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 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 14:02:25,355 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 20 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 457 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 14:02:25,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 457 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:02:25,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-19 14:02:25,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 131. [2021-11-19 14:02:25,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 91 states have (on average 1.2197802197802199) internal successors, (111), 92 states have internal predecessors, (111), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2021-11-19 14:02:25,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 167 transitions. [2021-11-19 14:02:25,382 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 167 transitions. Word has length 71 [2021-11-19 14:02:25,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:25,383 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 167 transitions. [2021-11-19 14:02:25,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 14:02:25,383 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 167 transitions. [2021-11-19 14:02:25,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 14:02:25,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:25,385 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-19 14:02:25,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:25,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:25,599 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:02:25,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:25,599 INFO L85 PathProgramCache]: Analyzing trace with hash -103119563, now seen corresponding path program 1 times [2021-11-19 14:02:25,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:25,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217515325] [2021-11-19 14:02:25,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:25,602 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:25,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:25,603 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:25,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:02:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:26,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:02:26,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:27,308 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 14:02:27,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:27,906 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-19 14:02:27,906 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:27,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217515325] [2021-11-19 14:02:27,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217515325] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:02:27,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:02:27,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-19 14:02:27,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93764955] [2021-11-19 14:02:27,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:27,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:02:27,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:27,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:02:27,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:02:27,908 INFO L87 Difference]: Start difference. First operand 131 states and 167 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 14:02:30,022 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:02:32,032 WARN L515 Checker$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 14:02:33,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:33,302 INFO L93 Difference]: Finished difference Result 252 states and 330 transitions. [2021-11-19 14:02:33,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:02:33,307 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), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2021-11-19 14:02:33,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:33,309 INFO L225 Difference]: With dead ends: 252 [2021-11-19 14:02:33,309 INFO L226 Difference]: Without dead ends: 151 [2021-11-19 14:02:33,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 142 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 14:02:33,311 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 42 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:33,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 527 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 2 Unknown, 37 Unchecked, 5.2s Time] [2021-11-19 14:02:33,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-19 14:02:33,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 140. [2021-11-19 14:02:33,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 100 states have (on average 1.23) internal successors, (123), 101 states have internal predecessors, (123), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2021-11-19 14:02:33,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 179 transitions. [2021-11-19 14:02:33,335 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 179 transitions. Word has length 75 [2021-11-19 14:02:33,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:33,336 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 179 transitions. [2021-11-19 14:02:33,336 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), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 14:02:33,336 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 179 transitions. [2021-11-19 14:02:33,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 14:02:33,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:33,338 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-19 14:02:33,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-19 14:02:33,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:33,539 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:02:33,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:33,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1474926861, now seen corresponding path program 1 times [2021-11-19 14:02:33,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:33,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074869888] [2021-11-19 14:02:33,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:33,542 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:33,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:33,543 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:33,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:02:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:34,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 1490 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 14:02:34,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:36,347 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 14:02:36,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:38,218 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-19 14:02:38,218 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:38,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074869888] [2021-11-19 14:02:38,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074869888] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:02:38,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:02:38,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 19 [2021-11-19 14:02:38,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431573596] [2021-11-19 14:02:38,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:38,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:02:38,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:38,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:02:38,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:02:38,221 INFO L87 Difference]: Start difference. First operand 140 states and 179 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-19 14:02:40,316 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:02:42,328 WARN L515 Checker$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 14:02:45,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:45,400 INFO L93 Difference]: Finished difference Result 260 states and 340 transitions. [2021-11-19 14:02:45,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:02:45,404 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 75 [2021-11-19 14:02:45,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:45,406 INFO L225 Difference]: With dead ends: 260 [2021-11-19 14:02:45,407 INFO L226 Difference]: Without dead ends: 149 [2021-11-19 14:02:45,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-19 14:02:45,409 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 38 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 258 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:45,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 1392 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 188 Invalid, 2 Unknown, 258 Unchecked, 5.6s Time] [2021-11-19 14:02:45,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-19 14:02:45,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 145. [2021-11-19 14:02:45,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 104 states have (on average 1.2019230769230769) internal successors, (125), 106 states have internal predecessors, (125), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2021-11-19 14:02:45,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 183 transitions. [2021-11-19 14:02:45,423 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 183 transitions. Word has length 75 [2021-11-19 14:02:45,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:45,423 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 183 transitions. [2021-11-19 14:02:45,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-19 14:02:45,424 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 183 transitions. [2021-11-19 14:02:45,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 14:02:45,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:45,425 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-19 14:02:45,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:45,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:45,639 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:02:45,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:45,639 INFO L85 PathProgramCache]: Analyzing trace with hash 790366775, now seen corresponding path program 1 times [2021-11-19 14:02:45,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:45,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799631556] [2021-11-19 14:02:45,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:45,641 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:45,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:45,641 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:45,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:02:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:46,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:02:46,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 14:02:46,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:46,822 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-19 14:02:46,822 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:46,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799631556] [2021-11-19 14:02:46,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799631556] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:02:46,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:02:46,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-19 14:02:46,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670764306] [2021-11-19 14:02:46,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:46,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:02:46,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:46,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:02:46,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:02:46,824 INFO L87 Difference]: Start difference. First operand 145 states and 183 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 14:02:46,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:46,886 INFO L93 Difference]: Finished difference Result 264 states and 338 transitions. [2021-11-19 14:02:46,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:02:46,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2021-11-19 14:02:46,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:46,888 INFO L225 Difference]: With dead ends: 264 [2021-11-19 14:02:46,889 INFO L226 Difference]: Without dead ends: 149 [2021-11-19 14:02:46,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 146 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 14:02:46,890 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 34 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 448 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 14:02:46,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 448 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:02:46,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-19 14:02:46,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 141. [2021-11-19 14:02:46,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 100 states have (on average 1.18) internal successors, (118), 102 states have internal predecessors, (118), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2021-11-19 14:02:46,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 176 transitions. [2021-11-19 14:02:46,902 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 176 transitions. Word has length 75 [2021-11-19 14:02:46,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:46,902 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 176 transitions. [2021-11-19 14:02:46,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 14:02:46,903 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 176 transitions. [2021-11-19 14:02:46,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 14:02:46,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:46,904 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-19 14:02:46,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:47,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:47,119 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:02:47,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:47,119 INFO L85 PathProgramCache]: Analyzing trace with hash -107026503, now seen corresponding path program 1 times [2021-11-19 14:02:47,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:47,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17005382] [2021-11-19 14:02:47,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:47,121 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:47,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:47,122 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:47,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:02:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:48,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:02:48,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:48,352 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 14:02:48,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:48,726 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-19 14:02:48,726 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:48,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17005382] [2021-11-19 14:02:48,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17005382] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:02:48,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:02:48,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-19 14:02:48,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695809674] [2021-11-19 14:02:48,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:48,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:02:48,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:48,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:02:48,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:02:48,729 INFO L87 Difference]: Start difference. First operand 141 states and 176 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-19 14:02:49,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:49,029 INFO L93 Difference]: Finished difference Result 263 states and 332 transitions. [2021-11-19 14:02:49,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:02:49,031 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 75 [2021-11-19 14:02:49,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:49,033 INFO L225 Difference]: With dead ends: 263 [2021-11-19 14:02:49,033 INFO L226 Difference]: Without dead ends: 150 [2021-11-19 14:02:49,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:02:49,035 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 12 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:49,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1133 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:02:49,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-19 14:02:49,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 141. [2021-11-19 14:02:49,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 100 states have (on average 1.18) internal successors, (118), 102 states have internal predecessors, (118), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2021-11-19 14:02:49,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 176 transitions. [2021-11-19 14:02:49,048 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 176 transitions. Word has length 75 [2021-11-19 14:02:49,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:49,048 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 176 transitions. [2021-11-19 14:02:49,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-19 14:02:49,049 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 176 transitions. [2021-11-19 14:02:49,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-19 14:02:49,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:49,050 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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 14:02:49,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:49,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:49,263 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:02:49,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:49,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1951422690, now seen corresponding path program 1 times [2021-11-19 14:02:49,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:49,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565360390] [2021-11-19 14:02:49,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:49,265 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:49,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:49,266 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:49,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:02:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:50,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:02:50,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:50,607 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-19 14:02:50,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:50,955 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-19 14:02:50,956 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:50,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565360390] [2021-11-19 14:02:50,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565360390] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:50,956 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:50,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-19 14:02:50,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630813824] [2021-11-19 14:02:50,956 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:50,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:02:50,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:50,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:02:50,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:02:50,958 INFO L87 Difference]: Start difference. First operand 141 states and 176 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-19 14:02:51,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:51,299 INFO L93 Difference]: Finished difference Result 244 states and 304 transitions. [2021-11-19 14:02:51,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:02:51,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 77 [2021-11-19 14:02:51,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:51,303 INFO L225 Difference]: With dead ends: 244 [2021-11-19 14:02:51,303 INFO L226 Difference]: Without dead ends: 138 [2021-11-19 14:02:51,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:02:51,304 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 51 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:51,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 666 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:02:51,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-19 14:02:51,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-11-19 14:02:51,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 98 states have (on average 1.1734693877551021) internal successors, (115), 99 states have internal predecessors, (115), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2021-11-19 14:02:51,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 172 transitions. [2021-11-19 14:02:51,314 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 172 transitions. Word has length 77 [2021-11-19 14:02:51,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:51,315 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 172 transitions. [2021-11-19 14:02:51,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-19 14:02:51,315 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 172 transitions. [2021-11-19 14:02:51,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-19 14:02:51,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:51,317 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-19 14:02:51,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:51,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:51,539 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:02:51,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:51,539 INFO L85 PathProgramCache]: Analyzing trace with hash 23657097, now seen corresponding path program 1 times [2021-11-19 14:02:51,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:51,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017378702] [2021-11-19 14:02:51,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:51,541 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:51,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:51,541 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:51,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:02:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:52,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-19 14:02:52,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:02:55,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:08,668 WARN L227 SmtUtils]: Spent 10.30s 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 14:03:08,677 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-19 14:03:08,678 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 14:11:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-19 14:11:12,249 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:11:12,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017378702] [2021-11-19 14:11:12,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2017378702] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:11:12,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [387853726] [2021-11-19 14:11:12,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:11:12,250 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:11:12,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:11:12,257 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:11:12,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-19 14:11:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:11:12,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:11:12,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:11:13,448 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-19 14:11:13,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:11:13,674 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-19 14:11:13,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [387853726] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:11:13,675 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:11:13,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [13, 11] total 23 [2021-11-19 14:11:13,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774333391] [2021-11-19 14:11:13,675 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:11:13,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:11:13,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:11:13,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:11:13,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:11:13,676 INFO L87 Difference]: Start difference. First operand 138 states and 172 transitions. Second operand has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 14:11:13,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:11:13,758 INFO L93 Difference]: Finished difference Result 238 states and 296 transitions. [2021-11-19 14:11:13,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:11:13,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2021-11-19 14:11:13,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:11:13,761 INFO L225 Difference]: With dead ends: 238 [2021-11-19 14:11:13,761 INFO L226 Difference]: Without dead ends: 141 [2021-11-19 14:11:13,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 305 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:11:13,763 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 15 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:11:13,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 578 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:11:13,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-19 14:11:13,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-11-19 14:11:13,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 100 states have (on average 1.17) internal successors, (117), 102 states have internal predecessors, (117), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2021-11-19 14:11:13,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 175 transitions. [2021-11-19 14:11:13,773 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 175 transitions. Word has length 83 [2021-11-19 14:11:13,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:11:13,774 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 175 transitions. [2021-11-19 14:11:13,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 14:11:13,774 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 175 transitions. [2021-11-19 14:11:13,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-19 14:11:13,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:11:13,776 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-19 14:11:13,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:11:14,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:11:14,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:11:14,180 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:11:14,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:11:14,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1649733550, now seen corresponding path program 1 times [2021-11-19 14:11:14,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:11:14,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761779234] [2021-11-19 14:11:14,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:11:14,184 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:11:14,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:11:14,184 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:11:14,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7299aebe-25a0-434a-9f9f-e1583c16d65c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:11:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:11:15,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-19 14:11:15,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:11:17,856 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:11:17,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:11:31,884 WARN L227 SmtUtils]: Spent 11.01s 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 14:11:31,886 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-19 14:11:31,886 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