./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_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_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/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_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/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_356638ca-a6c5-47ab-b4c1-33876b526c7b/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 9e4ccc391c063e90fb229c8b3638d2f1089d6ba2ff288522cf06bf650b1be9e5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:04:01,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:04:01,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:04:01,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:04:01,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:04:01,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:04:01,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:04:01,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:04:01,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:04:01,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:04:01,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:04:01,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:04:01,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:04:01,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:04:01,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:04:01,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:04:01,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:04:01,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:04:01,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:04:01,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:04:01,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:04:01,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:04:01,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:04:01,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:04:01,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:04:01,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:04:01,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:04:01,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:04:01,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:04:01,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:04:01,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:04:01,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:04:01,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:04:01,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:04:01,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:04:01,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:04:01,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:04:01,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:04:01,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:04:01,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:04:01,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:04:01,623 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 15:04:01,667 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:04:01,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:04:01,670 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:04:01,670 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:04:01,670 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:04:01,671 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:04:01,671 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:04:01,671 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:04:01,671 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:04:01,672 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:04:01,673 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:04:01,673 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:04:01,673 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:04:01,674 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:04:01,674 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:04:01,674 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:04:01,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:04:01,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:04:01,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:04:01,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:04:01,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:04:01,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:04:01,676 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:04:01,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:04:01,677 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:04:01,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:04:01,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:04:01,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:04:01,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:04:01,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:04:01,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:04:01,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:04:01,680 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:04:01,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:04:01,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:04:01,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:04:01,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:04:01,681 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_356638ca-a6c5-47ab-b4c1-33876b526c7b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e4ccc391c063e90fb229c8b3638d2f1089d6ba2ff288522cf06bf650b1be9e5 [2021-11-19 15:04:02,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:04:02,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:04:02,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:04:02,038 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:04:02,039 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:04:02,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i [2021-11-19 15:04:02,137 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/data/67e6f8c3d/175f942e409d44ac94545e77be2aa96a/FLAG48f3e94d9 [2021-11-19 15:04:02,966 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:04:02,966 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i [2021-11-19 15:04:03,025 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/data/67e6f8c3d/175f942e409d44ac94545e77be2aa96a/FLAG48f3e94d9 [2021-11-19 15:04:03,481 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/data/67e6f8c3d/175f942e409d44ac94545e77be2aa96a [2021-11-19 15:04:03,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:04:03,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:04:03,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:04:03,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:04:03,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:04:03,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:04:03" (1/1) ... [2021-11-19 15:04:03,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@293ff635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:03, skipping insertion in model container [2021-11-19 15:04:03,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:04:03" (1/1) ... [2021-11-19 15:04:03,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:04:03,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:04:03,932 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_356638ca-a6c5-47ab-b4c1-33876b526c7b/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4495,4508] [2021-11-19 15:04:03,940 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_356638ca-a6c5-47ab-b4c1-33876b526c7b/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4555,4568] [2021-11-19 15:04:03,967 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:04:03,974 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:04:05,041 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:05,042 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:05,042 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:05,044 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:05,045 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:05,059 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:05,060 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:05,062 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:05,063 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:05,572 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:04:05,574 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:04:05,575 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:04:05,576 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:04:05,578 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:04:05,579 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:04:05,579 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:04:05,580 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:04:05,581 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:04:05,582 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:04:05,768 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:04:05,940 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:05,945 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:06,018 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:04:06,084 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 15:04:06,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@55149327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:06, skipping insertion in model container [2021-11-19 15:04:06,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:04:06,090 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:04:06,093 INFO L158 Benchmark]: Toolchain (without parser) took 2604.11ms. Allocated memory is still 111.1MB. Free memory was 84.6MB in the beginning and 63.9MB in the end (delta: 20.7MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. [2021-11-19 15:04:06,094 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 92.3MB. Free memory was 64.4MB in the beginning and 64.4MB in the end (delta: 32.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:04:06,095 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2601.58ms. Allocated memory is still 111.1MB. Free memory was 84.2MB in the beginning and 63.9MB in the end (delta: 20.3MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. [2021-11-19 15:04:06,097 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 92.3MB. Free memory was 64.4MB in the beginning and 64.4MB in the end (delta: 32.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2601.58ms. Allocated memory is still 111.1MB. Free memory was 84.2MB in the beginning and 63.9MB in the end (delta: 20.3MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6990]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/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_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/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_356638ca-a6c5-47ab-b4c1-33876b526c7b/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 9e4ccc391c063e90fb229c8b3638d2f1089d6ba2ff288522cf06bf650b1be9e5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:04:08,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:04:08,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:04:08,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:04:08,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:04:08,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:04:08,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:04:08,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:04:08,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:04:08,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:04:08,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:04:08,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:04:08,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:04:08,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:04:08,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:04:08,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:04:08,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:04:08,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:04:08,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:04:08,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:04:08,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:04:08,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:04:08,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:04:08,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:04:08,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:04:08,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:04:08,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:04:08,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:04:08,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:04:08,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:04:08,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:04:08,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:04:08,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:04:08,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:04:08,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:04:08,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:04:08,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:04:08,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:04:08,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:04:08,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:04:08,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:04:08,690 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 15:04:08,743 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:04:08,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:04:08,745 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:04:08,745 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:04:08,745 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:04:08,746 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:04:08,746 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:04:08,746 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:04:08,746 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:04:08,746 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:04:08,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:04:08,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:04:08,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:04:08,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:04:08,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:04:08,751 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:04:08,751 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:04:08,751 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:04:08,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:04:08,752 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:04:08,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:04:08,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:04:08,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:04:08,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:04:08,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:04:08,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:04:08,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:04:08,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:04:08,754 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:04:08,754 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:04:08,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:04:08,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:04:08,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:04:08,755 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_356638ca-a6c5-47ab-b4c1-33876b526c7b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e4ccc391c063e90fb229c8b3638d2f1089d6ba2ff288522cf06bf650b1be9e5 [2021-11-19 15:04:09,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:04:09,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:04:09,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:04:09,274 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:04:09,275 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:04:09,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i [2021-11-19 15:04:09,375 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/data/473694ae6/d00674fe39724319b3661fac53cc5f77/FLAG55d956857 [2021-11-19 15:04:10,287 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:04:10,289 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i [2021-11-19 15:04:10,348 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/data/473694ae6/d00674fe39724319b3661fac53cc5f77/FLAG55d956857 [2021-11-19 15:04:10,768 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/data/473694ae6/d00674fe39724319b3661fac53cc5f77 [2021-11-19 15:04:10,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:04:10,774 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:04:10,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:04:10,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:04:10,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:04:10,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:04:10" (1/1) ... [2021-11-19 15:04:10,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@276550b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:10, skipping insertion in model container [2021-11-19 15:04:10,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:04:10" (1/1) ... [2021-11-19 15:04:10,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:04:10,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:04:11,238 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_356638ca-a6c5-47ab-b4c1-33876b526c7b/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4495,4508] [2021-11-19 15:04:11,247 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4555,4568] [2021-11-19 15:04:11,281 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:04:11,289 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:04:12,316 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:12,317 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:12,317 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:12,326 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:12,328 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:12,357 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:12,358 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:12,367 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:12,368 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:12,906 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:04:12,907 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:04:12,908 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:04:12,910 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:04:12,911 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:04:12,912 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:04:12,912 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:04:12,913 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:04:12,914 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:04:12,914 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:04:13,112 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:04:13,328 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:13,331 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:13,423 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:04:13,496 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:04:13,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:04:13,550 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_356638ca-a6c5-47ab-b4c1-33876b526c7b/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4495,4508] [2021-11-19 15:04:13,551 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_356638ca-a6c5-47ab-b4c1-33876b526c7b/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4555,4568] [2021-11-19 15:04:13,552 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:04:13,553 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:04:13,590 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:13,591 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:13,591 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:13,592 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:13,593 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:13,600 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:13,601 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:13,602 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:13,603 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:13,654 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:04:13,655 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:04:13,656 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:04:13,657 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:04:13,664 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:04:13,664 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:04:13,665 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:04:13,665 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:04:13,666 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:04:13,666 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:04:13,698 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:04:13,771 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:13,771 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:13,810 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:04:13,870 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:04:13,885 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_356638ca-a6c5-47ab-b4c1-33876b526c7b/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4495,4508] [2021-11-19 15:04:13,885 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_356638ca-a6c5-47ab-b4c1-33876b526c7b/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4555,4568] [2021-11-19 15:04:13,887 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:04:13,888 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:04:13,919 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:13,920 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:13,920 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:13,920 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:13,921 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:13,927 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:13,927 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:13,928 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:13,928 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:13,961 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:04:13,962 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:04:13,963 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:04:13,963 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:04:13,964 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:04:13,965 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:04:13,965 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:04:13,966 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:04:13,966 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:04:13,967 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:04:13,996 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:04:14,077 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:14,078 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:14,169 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:04:14,527 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:04:14,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:14 WrapperNode [2021-11-19 15:04:14,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:04:14,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:04:14,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:04:14,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:04:14,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:14" (1/1) ... [2021-11-19 15:04:14,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:14" (1/1) ... [2021-11-19 15:04:14,785 INFO L137 Inliner]: procedures = 713, calls = 2641, calls flagged for inlining = 64, calls inlined = 10, statements flattened = 901 [2021-11-19 15:04:14,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:04:14,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:04:14,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:04:14,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:04:14,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:14" (1/1) ... [2021-11-19 15:04:14,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:14" (1/1) ... [2021-11-19 15:04:14,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:14" (1/1) ... [2021-11-19 15:04:14,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:14" (1/1) ... [2021-11-19 15:04:14,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:14" (1/1) ... [2021-11-19 15:04:14,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:14" (1/1) ... [2021-11-19 15:04:14,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:14" (1/1) ... [2021-11-19 15:04:14,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:04:14,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:04:14,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:04:14,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:04:14,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:14" (1/1) ... [2021-11-19 15:04:14,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:04:14,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:04:14,943 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:04:14,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:04:14,993 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2021-11-19 15:04:14,993 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2021-11-19 15:04:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-19 15:04:14,994 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-19 15:04:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:04:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 15:04:14,994 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 15:04:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:04:14,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 15:04:14,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 15:04:14,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 15:04:14,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 15:04:14,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:04:14,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:04:14,996 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-19 15:04:14,997 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-19 15:04:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 15:04:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:04:14,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:04:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 15:04:14,997 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 15:04:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 15:04:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-19 15:04:14,998 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-19 15:04:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 15:04:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 15:04:14,998 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 15:04:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:04:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 15:04:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 15:04:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 15:04:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 15:04:15,000 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 15:04:15,000 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 15:04:15,000 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 15:04:15,000 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 15:04:15,391 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:04:15,395 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:04:19,192 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:04:19,210 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:04:19,210 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 15:04:19,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:04:19 BoogieIcfgContainer [2021-11-19 15:04:19,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:04:19,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:04:19,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:04:19,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:04:19,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:04:10" (1/3) ... [2021-11-19 15:04:19,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198fa1b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:04:19, skipping insertion in model container [2021-11-19 15:04:19,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:14" (2/3) ... [2021-11-19 15:04:19,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198fa1b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:04:19, skipping insertion in model container [2021-11-19 15:04:19,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:04:19" (3/3) ... [2021-11-19 15:04:19,232 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_c_str_harness.i [2021-11-19 15:04:19,239 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:04:19,239 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:04:19,316 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:04:19,326 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 15:04:19,326 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:04:19,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 94 states have (on average 1.2553191489361701) internal successors, (118), 96 states have internal predecessors, (118), 36 states have call successors, (36), 10 states have call predecessors, (36), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-11-19 15:04:19,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-19 15:04:19,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:19,368 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:04:19,369 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:04:19,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:19,375 INFO L85 PathProgramCache]: Analyzing trace with hash 2056314399, now seen corresponding path program 1 times [2021-11-19 15:04:19,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:19,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708143936] [2021-11-19 15:04:19,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:19,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:19,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:19,397 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:19,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:04:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:20,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 15:04:20,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:20,863 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-11-19 15:04:20,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:21,189 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-19 15:04:21,190 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:21,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708143936] [2021-11-19 15:04:21,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708143936] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:04:21,191 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:04:21,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 15:04:21,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298225380] [2021-11-19 15:04:21,193 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:21,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 15:04:21,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:21,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 15:04:21,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:04:21,239 INFO L87 Difference]: Start difference. First operand has 142 states, 94 states have (on average 1.2553191489361701) internal successors, (118), 96 states have internal predecessors, (118), 36 states have call successors, (36), 10 states have call predecessors, (36), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 15:04:21,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:21,315 INFO L93 Difference]: Finished difference Result 279 states and 401 transitions. [2021-11-19 15:04:21,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 15:04:21,319 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 127 [2021-11-19 15:04:21,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:21,336 INFO L225 Difference]: With dead ends: 279 [2021-11-19 15:04:21,336 INFO L226 Difference]: Without dead ends: 137 [2021-11-19 15:04:21,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:04:21,348 INFO L933 BasicCegarLoop]: 187 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, 187 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:21,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:04:21,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-19 15:04:21,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-11-19 15:04:21,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 90 states have (on average 1.2222222222222223) internal successors, (110), 91 states have internal predecessors, (110), 36 states have call successors, (36), 10 states have call predecessors, (36), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-19 15:04:21,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 181 transitions. [2021-11-19 15:04:21,429 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 181 transitions. Word has length 127 [2021-11-19 15:04:21,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:21,431 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 181 transitions. [2021-11-19 15:04:21,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 15:04:21,433 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 181 transitions. [2021-11-19 15:04:21,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-19 15:04:21,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:21,445 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:04:21,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:21,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:21,670 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:04:21,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:21,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1869541743, now seen corresponding path program 1 times [2021-11-19 15:04:21,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:21,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760118463] [2021-11-19 15:04:21,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:21,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:21,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:21,681 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:21,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:04:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:22,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:04:22,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:23,346 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-19 15:04:23,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:23,816 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-19 15:04:23,817 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:23,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760118463] [2021-11-19 15:04:23,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760118463] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:04:23,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:04:23,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 15:04:23,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283103273] [2021-11-19 15:04:23,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:23,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:04:23,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:23,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:04:23,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:04:23,821 INFO L87 Difference]: Start difference. First operand 137 states and 181 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-19 15:04:24,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:24,024 INFO L93 Difference]: Finished difference Result 244 states and 327 transitions. [2021-11-19 15:04:24,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:04:24,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 127 [2021-11-19 15:04:24,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:24,029 INFO L225 Difference]: With dead ends: 244 [2021-11-19 15:04:24,029 INFO L226 Difference]: Without dead ends: 140 [2021-11-19 15:04:24,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:04:24,031 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 57 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:24,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 433 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:04:24,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-19 15:04:24,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-11-19 15:04:24,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 92 states have (on average 1.2173913043478262) internal successors, (112), 94 states have internal predecessors, (112), 36 states have call successors, (36), 10 states have call predecessors, (36), 11 states have return successors, (37), 35 states have call predecessors, (37), 35 states have call successors, (37) [2021-11-19 15:04:24,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 185 transitions. [2021-11-19 15:04:24,049 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 185 transitions. Word has length 127 [2021-11-19 15:04:24,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:24,049 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 185 transitions. [2021-11-19 15:04:24,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-19 15:04:24,050 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 185 transitions. [2021-11-19 15:04:24,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-19 15:04:24,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:24,052 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:04:24,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:24,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:24,274 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:04:24,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:24,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1811101058, now seen corresponding path program 1 times [2021-11-19 15:04:24,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:24,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [275616322] [2021-11-19 15:04:24,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:24,278 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:24,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:24,287 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:24,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:04:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:25,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 1596 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:04:25,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:25,836 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-19 15:04:25,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:26,144 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-11-19 15:04:26,145 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:26,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [275616322] [2021-11-19 15:04:26,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [275616322] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:04:26,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:04:26,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-19 15:04:26,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040434449] [2021-11-19 15:04:26,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:26,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:04:26,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:26,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:04:26,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:04:26,148 INFO L87 Difference]: Start difference. First operand 140 states and 185 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 15:04:26,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:26,225 INFO L93 Difference]: Finished difference Result 269 states and 364 transitions. [2021-11-19 15:04:26,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:04:26,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 133 [2021-11-19 15:04:26,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:26,229 INFO L225 Difference]: With dead ends: 269 [2021-11-19 15:04:26,230 INFO L226 Difference]: Without dead ends: 162 [2021-11-19 15:04:26,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:04:26,234 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 42 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:26,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 543 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:04:26,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-19 15:04:26,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 142. [2021-11-19 15:04:26,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 94 states have (on average 1.2127659574468086) internal successors, (114), 96 states have internal predecessors, (114), 36 states have call successors, (36), 10 states have call predecessors, (36), 11 states have return successors, (37), 35 states have call predecessors, (37), 35 states have call successors, (37) [2021-11-19 15:04:26,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 187 transitions. [2021-11-19 15:04:26,266 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 187 transitions. Word has length 133 [2021-11-19 15:04:26,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:26,267 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 187 transitions. [2021-11-19 15:04:26,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 15:04:26,268 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 187 transitions. [2021-11-19 15:04:26,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-19 15:04:26,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:26,273 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:04:26,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:26,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:26,488 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:04:26,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:26,489 INFO L85 PathProgramCache]: Analyzing trace with hash 572823680, now seen corresponding path program 1 times [2021-11-19 15:04:26,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:26,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393150292] [2021-11-19 15:04:26,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:26,492 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:26,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:26,493 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:26,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:04:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:27,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 1593 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:04:27,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:27,963 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-19 15:04:27,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:28,299 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-11-19 15:04:28,299 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:28,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393150292] [2021-11-19 15:04:28,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393150292] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:04:28,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:04:28,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 15:04:28,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468639051] [2021-11-19 15:04:28,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:28,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:04:28,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:28,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:04:28,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:04:28,302 INFO L87 Difference]: Start difference. First operand 142 states and 187 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 15:04:28,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:28,421 INFO L93 Difference]: Finished difference Result 271 states and 365 transitions. [2021-11-19 15:04:28,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 15:04:28,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 133 [2021-11-19 15:04:28,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:28,424 INFO L225 Difference]: With dead ends: 271 [2021-11-19 15:04:28,424 INFO L226 Difference]: Without dead ends: 162 [2021-11-19 15:04:28,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:04:28,426 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 55 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:28,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 706 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:04:28,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-19 15:04:28,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 144. [2021-11-19 15:04:28,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 96 states have (on average 1.2083333333333333) internal successors, (116), 98 states have internal predecessors, (116), 36 states have call successors, (36), 10 states have call predecessors, (36), 11 states have return successors, (37), 35 states have call predecessors, (37), 35 states have call successors, (37) [2021-11-19 15:04:28,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 189 transitions. [2021-11-19 15:04:28,463 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 189 transitions. Word has length 133 [2021-11-19 15:04:28,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:28,463 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 189 transitions. [2021-11-19 15:04:28,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 15:04:28,464 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 189 transitions. [2021-11-19 15:04:28,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-19 15:04:28,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:28,466 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:04:28,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:28,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:28,667 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:04:28,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:28,668 INFO L85 PathProgramCache]: Analyzing trace with hash 749761788, now seen corresponding path program 1 times [2021-11-19 15:04:28,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:28,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129639401] [2021-11-19 15:04:28,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:28,670 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:28,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:28,671 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:28,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:04:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:29,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 1598 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 15:04:29,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:30,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-19 15:04:31,217 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-19 15:04:31,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:32,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-19 15:04:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-11-19 15:04:32,581 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:32,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129639401] [2021-11-19 15:04:32,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129639401] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:04:32,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:04:32,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 19 [2021-11-19 15:04:32,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485384261] [2021-11-19 15:04:32,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:32,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 15:04:32,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:32,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 15:04:32,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-19 15:04:32,591 INFO L87 Difference]: Start difference. First operand 144 states and 189 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 10 states have internal predecessors, (60), 5 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2021-11-19 15:04:33,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:33,027 INFO L93 Difference]: Finished difference Result 273 states and 358 transitions. [2021-11-19 15:04:33,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 15:04:33,028 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 10 states have internal predecessors, (60), 5 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 133 [2021-11-19 15:04:33,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:33,031 INFO L225 Difference]: With dead ends: 273 [2021-11-19 15:04:33,031 INFO L226 Difference]: Without dead ends: 155 [2021-11-19 15:04:33,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-19 15:04:33,033 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 101 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:33,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 644 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 67 Invalid, 0 Unknown, 37 Unchecked, 0.3s Time] [2021-11-19 15:04:33,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-19 15:04:33,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 149. [2021-11-19 15:04:33,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 101 states have (on average 1.2178217821782178) internal successors, (123), 102 states have internal predecessors, (123), 36 states have call successors, (36), 11 states have call predecessors, (36), 11 states have return successors, (37), 35 states have call predecessors, (37), 35 states have call successors, (37) [2021-11-19 15:04:33,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 196 transitions. [2021-11-19 15:04:33,052 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 196 transitions. Word has length 133 [2021-11-19 15:04:33,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:33,053 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 196 transitions. [2021-11-19 15:04:33,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 10 states have internal predecessors, (60), 5 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2021-11-19 15:04:33,054 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 196 transitions. [2021-11-19 15:04:33,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-19 15:04:33,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:33,057 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:04:33,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:33,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:33,274 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:04:33,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:33,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1333644680, now seen corresponding path program 1 times [2021-11-19 15:04:33,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:33,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878303403] [2021-11-19 15:04:33,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:33,277 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:33,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:33,278 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:33,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:04:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:34,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 1602 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:04:34,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:34,726 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-11-19 15:04:34,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:35,194 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-19 15:04:35,195 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:35,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878303403] [2021-11-19 15:04:35,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878303403] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:04:35,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:04:35,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-19 15:04:35,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054955883] [2021-11-19 15:04:35,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:35,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 15:04:35,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:35,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 15:04:35,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:04:35,198 INFO L87 Difference]: Start difference. First operand 149 states and 196 transitions. Second operand has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-19 15:04:35,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:35,585 INFO L93 Difference]: Finished difference Result 265 states and 352 transitions. [2021-11-19 15:04:35,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 15:04:35,587 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 137 [2021-11-19 15:04:35,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:35,591 INFO L225 Difference]: With dead ends: 265 [2021-11-19 15:04:35,592 INFO L226 Difference]: Without dead ends: 154 [2021-11-19 15:04:35,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:04:35,596 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 12 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:35,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1291 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:04:35,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-19 15:04:35,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-11-19 15:04:35,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 105 states have (on average 1.2095238095238094) internal successors, (127), 107 states have internal predecessors, (127), 36 states have call successors, (36), 11 states have call predecessors, (36), 12 states have return successors, (40), 35 states have call predecessors, (40), 35 states have call successors, (40) [2021-11-19 15:04:35,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 203 transitions. [2021-11-19 15:04:35,626 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 203 transitions. Word has length 137 [2021-11-19 15:04:35,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:35,627 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 203 transitions. [2021-11-19 15:04:35,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-19 15:04:35,628 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 203 transitions. [2021-11-19 15:04:35,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-19 15:04:35,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:35,632 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:04:35,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:35,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:35,850 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:04:35,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:35,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1898810797, now seen corresponding path program 1 times [2021-11-19 15:04:35,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:35,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61064424] [2021-11-19 15:04:35,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:35,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:35,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:35,853 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:35,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 15:04:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:36,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 1606 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:04:36,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:37,432 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-19 15:04:37,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-19 15:04:37,913 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:37,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61064424] [2021-11-19 15:04:37,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61064424] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:04:37,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:04:37,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2021-11-19 15:04:37,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518871533] [2021-11-19 15:04:37,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:37,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:04:37,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:37,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:04:37,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:04:37,916 INFO L87 Difference]: Start difference. First operand 154 states and 203 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2021-11-19 15:04:38,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:38,223 INFO L93 Difference]: Finished difference Result 254 states and 334 transitions. [2021-11-19 15:04:38,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:04:38,224 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 139 [2021-11-19 15:04:38,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:38,226 INFO L225 Difference]: With dead ends: 254 [2021-11-19 15:04:38,227 INFO L226 Difference]: Without dead ends: 151 [2021-11-19 15:04:38,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:04:38,228 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 81 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:38,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 718 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:04:38,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-19 15:04:38,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2021-11-19 15:04:38,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 103 states have (on average 1.203883495145631) internal successors, (124), 104 states have internal predecessors, (124), 36 states have call successors, (36), 11 states have call predecessors, (36), 11 states have return successors, (38), 35 states have call predecessors, (38), 35 states have call successors, (38) [2021-11-19 15:04:38,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 198 transitions. [2021-11-19 15:04:38,243 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 198 transitions. Word has length 139 [2021-11-19 15:04:38,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:38,244 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 198 transitions. [2021-11-19 15:04:38,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2021-11-19 15:04:38,245 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 198 transitions. [2021-11-19 15:04:38,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-19 15:04:38,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:38,247 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:04:38,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:38,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:38,461 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:04:38,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:38,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1544949763, now seen corresponding path program 1 times [2021-11-19 15:04:38,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:38,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369072670] [2021-11-19 15:04:38,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:38,465 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:38,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:38,468 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:38,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:04:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:39,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-19 15:04:39,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:42,755 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 141 proven. 8 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-19 15:04:42,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:58,299 WARN L227 SmtUtils]: Spent 11.25s 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 15:04:58,305 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-19 15:04:58,306 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 15:12:55,280 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-19 15:12:55,280 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:12:55,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369072670] [2021-11-19 15:12:55,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369072670] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:12:55,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1704318241] [2021-11-19 15:12:55,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:12:55,281 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:12:55,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:12:55,306 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:12:55,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-19 15:12:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:12:58,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-19 15:12:58,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:12:59,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-19 15:13:03,392 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-19 15:13:03,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:13:06,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-19 15:13:07,076 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-11-19 15:13:07,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1704318241] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:13:07,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:13:07,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [13, 11, 12] total 41 [2021-11-19 15:13:07,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202156369] [2021-11-19 15:13:07,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:13:07,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 15:13:07,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:13:07,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 15:13:07,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1501, Unknown=0, NotChecked=0, Total=1640 [2021-11-19 15:13:07,080 INFO L87 Difference]: Start difference. First operand 151 states and 198 transitions. Second operand has 15 states, 13 states have (on average 6.538461538461538) internal successors, (85), 14 states have internal predecessors, (85), 7 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) [2021-11-19 15:13:09,257 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:13:11,265 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:13:14,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:13:14,605 INFO L93 Difference]: Finished difference Result 376 states and 513 transitions. [2021-11-19 15:13:14,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 15:13:14,607 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.538461538461538) internal successors, (85), 14 states have internal predecessors, (85), 7 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) Word has length 151 [2021-11-19 15:13:14,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:13:14,611 INFO L225 Difference]: With dead ends: 376 [2021-11-19 15:13:14,611 INFO L226 Difference]: Without dead ends: 275 [2021-11-19 15:13:14,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 555 SyntacticMatches, 8 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=175, Invalid=1895, Unknown=0, NotChecked=0, Total=2070 [2021-11-19 15:13:14,614 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 142 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 70 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 596 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:13:14,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 1208 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 617 Invalid, 2 Unknown, 596 Unchecked, 6.5s Time] [2021-11-19 15:13:14,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-19 15:13:14,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 182. [2021-11-19 15:13:14,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 128 states have (on average 1.1953125) internal successors, (153), 132 states have internal predecessors, (153), 38 states have call successors, (38), 12 states have call predecessors, (38), 15 states have return successors, (46), 37 states have call predecessors, (46), 37 states have call successors, (46) [2021-11-19 15:13:14,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 237 transitions. [2021-11-19 15:13:14,640 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 237 transitions. Word has length 151 [2021-11-19 15:13:14,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:13:14,641 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 237 transitions. [2021-11-19 15:13:14,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.538461538461538) internal successors, (85), 14 states have internal predecessors, (85), 7 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) [2021-11-19 15:13:14,643 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 237 transitions. [2021-11-19 15:13:14,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-19 15:13:14,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:13:14,646 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:13:14,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:13:14,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-11-19 15:13:15,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:13:15,065 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:13:15,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:13:15,066 INFO L85 PathProgramCache]: Analyzing trace with hash -492514002, now seen corresponding path program 1 times [2021-11-19 15:13:15,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:13:15,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676599635] [2021-11-19 15:13:15,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:13:15,068 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:13:15,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:13:15,069 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:13:15,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 15:13:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:13:16,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-19 15:13:16,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:13:19,752 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 140 proven. 4 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 15:13:19,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:13:24,381 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:13:24,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-19 15:13:24,408 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-19 15:13:24,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-19 15:13:24,675 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-11-19 15:13:24,675 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:13:24,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676599635] [2021-11-19 15:13:24,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676599635] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:13:24,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [388578406] [2021-11-19 15:13:24,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:13:24,676 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:13:24,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:13:24,685 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:13:24,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-19 15:13:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:13:32,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 15:13:32,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:13:33,413 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-11-19 15:13:33,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:13:34,020 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-11-19 15:13:34,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [388578406] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:13:34,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:13:34,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18, 15, 10] total 35 [2021-11-19 15:13:34,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840731416] [2021-11-19 15:13:34,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:13:34,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:13:34,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:13:34,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:13:34,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2021-11-19 15:13:34,024 INFO L87 Difference]: Start difference. First operand 182 states and 237 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2021-11-19 15:13:34,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:13:34,308 INFO L93 Difference]: Finished difference Result 194 states and 251 transitions. [2021-11-19 15:13:34,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 15:13:34,309 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2021-11-19 15:13:34,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:13:34,312 INFO L225 Difference]: With dead ends: 194 [2021-11-19 15:13:34,312 INFO L226 Difference]: Without dead ends: 192 [2021-11-19 15:13:34,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 589 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332 [2021-11-19 15:13:34,314 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 23 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:13:34,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 1211 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:13:34,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-19 15:13:34,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 191. [2021-11-19 15:13:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 134 states have (on average 1.1865671641791045) internal successors, (159), 139 states have internal predecessors, (159), 39 states have call successors, (39), 13 states have call predecessors, (39), 17 states have return successors, (50), 38 states have call predecessors, (50), 38 states have call successors, (50) [2021-11-19 15:13:34,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 248 transitions. [2021-11-19 15:13:34,342 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 248 transitions. Word has length 158 [2021-11-19 15:13:34,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:13:34,343 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 248 transitions. [2021-11-19 15:13:34,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2021-11-19 15:13:34,343 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 248 transitions. [2021-11-19 15:13:34,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-19 15:13:34,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:13:34,347 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:13:34,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:13:34,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-19 15:13:34,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:13:34,769 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:13:34,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:13:34,769 INFO L85 PathProgramCache]: Analyzing trace with hash -962353222, now seen corresponding path program 1 times [2021-11-19 15:13:34,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:13:34,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835564054] [2021-11-19 15:13:34,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:13:34,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:13:34,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:13:34,775 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:13:34,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356638ca-a6c5-47ab-b4c1-33876b526c7b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 15:13:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:13:36,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 1652 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 15:13:36,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:13:39,331 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 140 proven. 8 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 15:13:39,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:13:53,555 WARN L227 SmtUtils]: Spent 11.26s 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 15:13:53,558 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-19 15:13:53,558 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