./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_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_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/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_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/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_f58c2a36-b942-4e30-9d95-680b6a406223/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 de3da06dbfc8734cb93dce42b312357899e8d9cc914b94ba94740650fa2d8258 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:44:12,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:44:12,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:44:12,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:44:12,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:44:12,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:44:12,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:44:12,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:44:12,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:44:12,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:44:12,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:44:12,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:44:12,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:44:12,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:44:12,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:44:12,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:44:12,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:44:12,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:44:12,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:44:12,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:44:12,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:44:12,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:44:12,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:44:12,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:44:12,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:44:12,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:44:12,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:44:12,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:44:12,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:44:12,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:44:12,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:44:12,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:44:12,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:44:12,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:44:12,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:44:12,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:44:12,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:44:12,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:44:12,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:44:12,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:44:12,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:44:12,497 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:44:12,527 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:44:12,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:44:12,528 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:44:12,529 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:44:12,529 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:44:12,529 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:44:12,529 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:44:12,530 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:44:12,530 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:44:12,530 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:44:12,530 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:44:12,530 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:44:12,531 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:44:12,531 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:44:12,531 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:44:12,531 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:44:12,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:44:12,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:44:12,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:44:12,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:44:12,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:44:12,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:44:12,533 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:44:12,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:44:12,534 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:44:12,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:44:12,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:44:12,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:44:12,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:44:12,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:44:12,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:44:12,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:44:12,536 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:44:12,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:44:12,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:44:12,536 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:44:12,536 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:44:12,537 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_f58c2a36-b942-4e30-9d95-680b6a406223/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de3da06dbfc8734cb93dce42b312357899e8d9cc914b94ba94740650fa2d8258 [2021-11-19 14:44:12,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:44:12,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:44:12,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:44:12,834 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:44:12,835 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:44:12,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i [2021-11-19 14:44:12,920 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/data/8753120dd/7f23ac1491c04089a0c0a50777986207/FLAG6dd2b613b [2021-11-19 14:44:13,863 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:44:13,864 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i [2021-11-19 14:44:13,938 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/data/8753120dd/7f23ac1491c04089a0c0a50777986207/FLAG6dd2b613b [2021-11-19 14:44:14,365 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/data/8753120dd/7f23ac1491c04089a0c0a50777986207 [2021-11-19 14:44:14,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:44:14,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:44:14,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:44:14,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:44:14,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:44:14,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:44:14" (1/1) ... [2021-11-19 14:44:14,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c9661b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:14, skipping insertion in model container [2021-11-19 14:44:14,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:44:14" (1/1) ... [2021-11-19 14:44:14,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:44:14,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:44:14,875 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_f58c2a36-b942-4e30-9d95-680b6a406223/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4494,4507] [2021-11-19 14:44:14,886 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_f58c2a36-b942-4e30-9d95-680b6a406223/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4554,4567] [2021-11-19 14:44:14,921 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:44:14,930 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:44:16,093 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:16,094 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:16,095 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:16,096 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:16,098 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:16,114 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:16,115 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:16,117 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:16,118 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:16,588 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:44:16,589 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:44:16,591 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:44:16,592 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:44:16,594 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:44:16,595 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:44:16,596 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:44:16,597 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:44:16,598 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:44:16,599 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:44:16,804 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:44:16,844 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:16,845 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:16,935 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:16,936 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:17,069 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:44:17,190 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:44:17,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@41b93253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:17, skipping insertion in model container [2021-11-19 14:44:17,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:44:17,191 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:44:17,194 INFO L158 Benchmark]: Toolchain (without parser) took 2823.05ms. Allocated memory was 90.2MB in the beginning and 144.7MB in the end (delta: 54.5MB). Free memory was 66.0MB in the beginning and 103.9MB in the end (delta: -38.0MB). Peak memory consumption was 56.8MB. Max. memory is 16.1GB. [2021-11-19 14:44:17,195 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 90.2MB. Free memory was 44.8MB in the beginning and 44.7MB in the end (delta: 39.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:44:17,197 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2819.93ms. Allocated memory was 90.2MB in the beginning and 144.7MB in the end (delta: 54.5MB). Free memory was 66.0MB in the beginning and 103.9MB in the end (delta: -38.0MB). Peak memory consumption was 56.8MB. Max. memory is 16.1GB. [2021-11-19 14:44:17,198 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 90.2MB. Free memory was 44.8MB in the beginning and 44.7MB in the end (delta: 39.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2819.93ms. Allocated memory was 90.2MB in the beginning and 144.7MB in the end (delta: 54.5MB). Free memory was 66.0MB in the beginning and 103.9MB in the end (delta: -38.0MB). Peak memory consumption was 56.8MB. 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_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/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_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/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_f58c2a36-b942-4e30-9d95-680b6a406223/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 de3da06dbfc8734cb93dce42b312357899e8d9cc914b94ba94740650fa2d8258 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:44:19,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:44:19,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:44:19,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:44:19,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:44:19,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:44:19,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:44:19,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:44:19,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:44:19,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:44:19,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:44:19,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:44:19,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:44:19,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:44:19,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:44:19,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:44:19,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:44:19,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:44:19,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:44:19,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:44:19,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:44:19,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:44:19,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:44:19,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:44:19,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:44:19,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:44:19,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:44:19,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:44:19,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:44:19,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:44:19,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:44:19,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:44:19,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:44:19,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:44:19,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:44:19,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:44:19,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:44:19,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:44:19,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:44:19,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:44:19,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:44:19,809 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:44:19,859 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:44:19,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:44:19,861 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:44:19,861 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:44:19,861 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:44:19,862 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:44:19,862 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:44:19,862 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:44:19,862 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:44:19,863 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:44:19,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:44:19,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:44:19,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:44:19,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:44:19,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:44:19,866 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:44:19,867 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:44:19,867 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:44:19,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:44:19,867 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:44:19,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:44:19,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:44:19,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:44:19,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:44:19,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:44:19,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:44:19,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:44:19,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:44:19,869 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:44:19,870 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:44:19,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:44:19,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:44:19,870 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:44:19,870 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_f58c2a36-b942-4e30-9d95-680b6a406223/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de3da06dbfc8734cb93dce42b312357899e8d9cc914b94ba94740650fa2d8258 [2021-11-19 14:44:20,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:44:20,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:44:20,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:44:20,331 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:44:20,332 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:44:20,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i [2021-11-19 14:44:20,424 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/data/ead742828/bbeb79a2313e4e1ba63a208c0e0d1343/FLAGcb4c76a8d [2021-11-19 14:44:21,407 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:44:21,407 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i [2021-11-19 14:44:21,465 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/data/ead742828/bbeb79a2313e4e1ba63a208c0e0d1343/FLAGcb4c76a8d [2021-11-19 14:44:21,817 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/data/ead742828/bbeb79a2313e4e1ba63a208c0e0d1343 [2021-11-19 14:44:21,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:44:21,822 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:44:21,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:44:21,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:44:21,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:44:21,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:44:21" (1/1) ... [2021-11-19 14:44:21,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee87d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:21, skipping insertion in model container [2021-11-19 14:44:21,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:44:21" (1/1) ... [2021-11-19 14:44:21,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:44:22,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:44:22,408 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_f58c2a36-b942-4e30-9d95-680b6a406223/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4494,4507] [2021-11-19 14:44:22,420 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_f58c2a36-b942-4e30-9d95-680b6a406223/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4554,4567] [2021-11-19 14:44:22,458 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:44:22,468 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:44:23,714 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:23,715 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:23,716 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:23,717 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:23,718 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:23,735 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:23,736 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:23,739 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:23,740 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:24,185 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:44:24,187 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:44:24,188 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:44:24,190 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:44:24,191 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:44:24,192 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:44:24,193 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:44:24,194 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:44:24,195 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:44:24,196 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:44:24,368 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:44:24,398 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:24,399 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:24,504 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:24,504 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:24,581 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:44:24,676 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:44:24,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:44:24,721 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_f58c2a36-b942-4e30-9d95-680b6a406223/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4494,4507] [2021-11-19 14:44:24,722 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_f58c2a36-b942-4e30-9d95-680b6a406223/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4554,4567] [2021-11-19 14:44:24,724 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:44:24,725 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:44:24,764 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:24,765 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:24,765 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:24,766 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:24,767 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:24,801 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:24,802 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:24,803 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:24,803 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:24,855 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:44:24,856 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:44:24,857 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:44:24,858 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:44:24,859 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:44:24,860 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:44:24,861 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:44:24,861 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:44:24,862 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:44:24,862 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:44:24,900 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:44:24,918 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:24,918 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:24,998 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:24,999 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:25,030 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:44:25,065 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:44:25,079 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_f58c2a36-b942-4e30-9d95-680b6a406223/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4494,4507] [2021-11-19 14:44:25,080 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_f58c2a36-b942-4e30-9d95-680b6a406223/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4554,4567] [2021-11-19 14:44:25,081 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:44:25,082 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:44:25,121 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:25,122 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:25,122 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:25,123 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:25,123 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:25,130 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:25,131 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:25,132 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:25,133 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:25,167 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:44:25,168 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:44:25,169 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:44:25,170 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:44:25,171 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:44:25,172 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:44:25,172 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:44:25,173 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:44:25,174 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:44:25,174 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:44:25,221 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:44:25,235 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:25,236 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:25,282 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:25,282 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:25,309 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:44:25,754 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:44:25,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:25 WrapperNode [2021-11-19 14:44:25,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:44:25,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:44:25,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:44:25,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:44:25,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:25" (1/1) ... [2021-11-19 14:44:25,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:25" (1/1) ... [2021-11-19 14:44:26,009 INFO L137 Inliner]: procedures = 714, calls = 2623, calls flagged for inlining = 60, calls inlined = 10, statements flattened = 949 [2021-11-19 14:44:26,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:44:26,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:44:26,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:44:26,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:44:26,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:25" (1/1) ... [2021-11-19 14:44:26,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:25" (1/1) ... [2021-11-19 14:44:26,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:25" (1/1) ... [2021-11-19 14:44:26,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:25" (1/1) ... [2021-11-19 14:44:26,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:25" (1/1) ... [2021-11-19 14:44:26,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:25" (1/1) ... [2021-11-19 14:44:26,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:25" (1/1) ... [2021-11-19 14:44:26,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:44:26,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:44:26,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:44:26,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:44:26,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:25" (1/1) ... [2021-11-19 14:44:26,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:44:26,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:44:26,277 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:44:26,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:44:26,362 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-19 14:44:26,362 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-19 14:44:26,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:44:26,363 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 14:44:26,364 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 14:44:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:44:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:44:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:44:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-19 14:44:26,364 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-19 14:44:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:44:26,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:44:26,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:44:26,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:44:26,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:44:26,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:44:26,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:44:26,366 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 14:44:26,366 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 14:44:26,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:44:26,366 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_realloc [2021-11-19 14:44:26,366 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_realloc [2021-11-19 14:44:26,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:44:26,366 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_reserve [2021-11-19 14:44:26,367 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_reserve [2021-11-19 14:44:26,367 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-19 14:44:26,367 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-19 14:44:26,367 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:44:26,368 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:44:26,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:44:26,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:44:26,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:44:26,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:44:26,372 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 14:44:26,372 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 14:44:26,372 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 14:44:26,372 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 14:44:26,728 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:44:26,730 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:44:30,571 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:44:30,582 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:44:30,583 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-19 14:44:30,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:44:30 BoogieIcfgContainer [2021-11-19 14:44:30,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:44:30,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:44:30,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:44:30,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:44:30,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:44:21" (1/3) ... [2021-11-19 14:44:30,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72017961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:44:30, skipping insertion in model container [2021-11-19 14:44:30,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:25" (2/3) ... [2021-11-19 14:44:30,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72017961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:44:30, skipping insertion in model container [2021-11-19 14:44:30,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:44:30" (3/3) ... [2021-11-19 14:44:30,599 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_reserve_harness.i [2021-11-19 14:44:30,606 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:44:30,606 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:44:30,683 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:44:30,691 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:44:30,691 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:44:30,719 INFO L276 IsEmpty]: Start isEmpty. Operand has 152 states, 103 states have (on average 1.2912621359223302) internal successors, (133), 103 states have internal predecessors, (133), 37 states have call successors, (37), 11 states have call predecessors, (37), 11 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-11-19 14:44:30,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-19 14:44:30,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:30,735 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:44:30,735 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:30,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:30,742 INFO L85 PathProgramCache]: Analyzing trace with hash -463635459, now seen corresponding path program 1 times [2021-11-19 14:44:30,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:30,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60464492] [2021-11-19 14:44:30,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:30,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:30,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:30,768 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:30,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:44:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:31,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:44:31,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:31,920 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:44:31,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:32,098 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 14:44:32,099 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:32,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [60464492] [2021-11-19 14:44:32,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [60464492] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:44:32,105 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:44:32,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:44:32,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989183609] [2021-11-19 14:44:32,109 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:32,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:44:32,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:32,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:44:32,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:44:32,166 INFO L87 Difference]: Start difference. First operand has 152 states, 103 states have (on average 1.2912621359223302) internal successors, (133), 103 states have internal predecessors, (133), 37 states have call successors, (37), 11 states have call predecessors, (37), 11 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 14:44:32,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:44:32,256 INFO L93 Difference]: Finished difference Result 294 states and 420 transitions. [2021-11-19 14:44:32,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:44:32,264 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2021-11-19 14:44:32,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:44:32,288 INFO L225 Difference]: With dead ends: 294 [2021-11-19 14:44:32,288 INFO L226 Difference]: Without dead ends: 145 [2021-11-19 14:44:32,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:44:32,306 INFO L933 BasicCegarLoop]: 201 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, 201 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:44:32,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:44:32,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-19 14:44:32,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-11-19 14:44:32,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 96 states have (on average 1.2395833333333333) internal successors, (119), 97 states have internal predecessors, (119), 37 states have call successors, (37), 11 states have call predecessors, (37), 11 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-11-19 14:44:32,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 192 transitions. [2021-11-19 14:44:32,391 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 192 transitions. Word has length 48 [2021-11-19 14:44:32,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:44:32,395 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 192 transitions. [2021-11-19 14:44:32,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 14:44:32,395 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 192 transitions. [2021-11-19 14:44:32,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-19 14:44:32,400 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:32,400 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:44:32,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 14:44:32,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:44:32,615 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:32,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:32,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1070415274, now seen corresponding path program 1 times [2021-11-19 14:44:32,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:32,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941178294] [2021-11-19 14:44:32,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:32,620 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:32,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:32,623 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:32,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:44:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:33,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 1396 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:44:33,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:33,866 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:44:33,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:34,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:44:34,131 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:34,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941178294] [2021-11-19 14:44:34,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [941178294] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:44:34,132 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:44:34,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 14:44:34,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421161184] [2021-11-19 14:44:34,132 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:34,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:44:34,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:34,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:44:34,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:44:34,136 INFO L87 Difference]: Start difference. First operand 145 states and 192 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-19 14:44:34,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:44:34,373 INFO L93 Difference]: Finished difference Result 277 states and 371 transitions. [2021-11-19 14:44:34,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:44:34,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 49 [2021-11-19 14:44:34,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:44:34,381 INFO L225 Difference]: With dead ends: 277 [2021-11-19 14:44:34,381 INFO L226 Difference]: Without dead ends: 148 [2021-11-19 14:44:34,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:44:34,383 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 37 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:44:34,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 498 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:44:34,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-19 14:44:34,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-11-19 14:44:34,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 98 states have (on average 1.2346938775510203) internal successors, (121), 100 states have internal predecessors, (121), 37 states have call successors, (37), 11 states have call predecessors, (37), 12 states have return successors, (40), 36 states have call predecessors, (40), 36 states have call successors, (40) [2021-11-19 14:44:34,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 198 transitions. [2021-11-19 14:44:34,403 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 198 transitions. Word has length 49 [2021-11-19 14:44:34,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:44:34,404 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 198 transitions. [2021-11-19 14:44:34,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-19 14:44:34,404 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 198 transitions. [2021-11-19 14:44:34,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-19 14:44:34,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:34,408 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:44:34,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:44:34,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:44:34,631 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:34,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:34,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1139219745, now seen corresponding path program 1 times [2021-11-19 14:44:34,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:34,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949968864] [2021-11-19 14:44:34,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:34,636 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:34,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:34,638 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:34,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:44:35,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:35,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:44:35,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:35,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-19 14:44:36,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:44:36,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:37,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-19 14:44:37,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:44:37,965 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:37,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949968864] [2021-11-19 14:44:37,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949968864] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:44:37,966 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:44:37,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 18 [2021-11-19 14:44:37,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628152486] [2021-11-19 14:44:37,966 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:37,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 14:44:37,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:37,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 14:44:37,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-11-19 14:44:37,969 INFO L87 Difference]: Start difference. First operand 148 states and 198 transitions. Second operand has 18 states, 18 states have (on average 3.5) internal successors, (63), 15 states have internal predecessors, (63), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-11-19 14:44:40,123 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:44:42,131 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:44:43,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:44:43,728 INFO L93 Difference]: Finished difference Result 301 states and 404 transitions. [2021-11-19 14:44:43,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 14:44:43,729 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 15 states have internal predecessors, (63), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 55 [2021-11-19 14:44:43,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:44:43,731 INFO L225 Difference]: With dead ends: 301 [2021-11-19 14:44:43,731 INFO L226 Difference]: Without dead ends: 162 [2021-11-19 14:44:43,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:44:43,734 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 72 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 26 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:44:43,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 1681 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 257 Invalid, 2 Unknown, 147 Unchecked, 5.5s Time] [2021-11-19 14:44:43,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-19 14:44:43,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2021-11-19 14:44:43,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 110 states have (on average 1.2363636363636363) internal successors, (136), 112 states have internal predecessors, (136), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (45), 36 states have call predecessors, (45), 36 states have call successors, (45) [2021-11-19 14:44:43,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 218 transitions. [2021-11-19 14:44:43,757 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 218 transitions. Word has length 55 [2021-11-19 14:44:43,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:44:43,757 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 218 transitions. [2021-11-19 14:44:43,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 15 states have internal predecessors, (63), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-11-19 14:44:43,758 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 218 transitions. [2021-11-19 14:44:43,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-19 14:44:43,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:43,761 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:44:43,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:44:43,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:44:43,982 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:43,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:43,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1116587491, now seen corresponding path program 1 times [2021-11-19 14:44:43,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:43,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10659041] [2021-11-19 14:44:43,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:43,986 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:43,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:43,987 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:43,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:44:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:44,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:44:44,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:45,108 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:44:45,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:45,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:44:45,254 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:45,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10659041] [2021-11-19 14:44:45,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [10659041] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:44:45,254 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:44:45,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:44:45,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337380377] [2021-11-19 14:44:45,255 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:45,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:44:45,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:45,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:44:45,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:44:45,256 INFO L87 Difference]: Start difference. First operand 161 states and 218 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:44:45,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:44:45,314 INFO L93 Difference]: Finished difference Result 307 states and 424 transitions. [2021-11-19 14:44:45,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:44:45,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 55 [2021-11-19 14:44:45,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:44:45,317 INFO L225 Difference]: With dead ends: 307 [2021-11-19 14:44:45,317 INFO L226 Difference]: Without dead ends: 171 [2021-11-19 14:44:45,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:44:45,320 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 20 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:44:45,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 568 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:44:45,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-11-19 14:44:45,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 159. [2021-11-19 14:44:45,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 108 states have (on average 1.2314814814814814) internal successors, (133), 110 states have internal predecessors, (133), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (45), 36 states have call predecessors, (45), 36 states have call successors, (45) [2021-11-19 14:44:45,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 215 transitions. [2021-11-19 14:44:45,342 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 215 transitions. Word has length 55 [2021-11-19 14:44:45,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:44:45,343 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 215 transitions. [2021-11-19 14:44:45,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:44:45,343 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 215 transitions. [2021-11-19 14:44:45,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-19 14:44:45,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:45,345 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:44:45,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:44:45,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:44:45,551 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:45,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:45,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1232526679, now seen corresponding path program 1 times [2021-11-19 14:44:45,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:45,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267454968] [2021-11-19 14:44:45,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:45,553 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:45,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:45,555 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:45,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:44:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:46,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 1418 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:44:46,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:47,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:44:47,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:47,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:44:47,822 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:47,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267454968] [2021-11-19 14:44:47,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267454968] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:44:47,822 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:44:47,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-19 14:44:47,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260236969] [2021-11-19 14:44:47,822 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:47,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:44:47,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:47,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:44:47,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:44:47,824 INFO L87 Difference]: Start difference. First operand 159 states and 215 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:44:49,953 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:44:51,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:44:51,195 INFO L93 Difference]: Finished difference Result 326 states and 455 transitions. [2021-11-19 14:44:51,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:44:51,197 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 59 [2021-11-19 14:44:51,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:44:51,200 INFO L225 Difference]: With dead ends: 326 [2021-11-19 14:44:51,200 INFO L226 Difference]: Without dead ends: 188 [2021-11-19 14:44:51,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:44:51,201 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 77 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:44:51,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 732 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 1 Unknown, 4 Unchecked, 3.1s Time] [2021-11-19 14:44:51,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-19 14:44:51,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 168. [2021-11-19 14:44:51,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 117 states have (on average 1.2393162393162394) internal successors, (145), 119 states have internal predecessors, (145), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (45), 36 states have call predecessors, (45), 36 states have call successors, (45) [2021-11-19 14:44:51,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 227 transitions. [2021-11-19 14:44:51,226 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 227 transitions. Word has length 59 [2021-11-19 14:44:51,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:44:51,227 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 227 transitions. [2021-11-19 14:44:51,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:44:51,227 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 227 transitions. [2021-11-19 14:44:51,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-19 14:44:51,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:51,229 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:44:51,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:44:51,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:44:51,435 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:51,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:51,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1934126553, now seen corresponding path program 1 times [2021-11-19 14:44:51,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:51,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28960434] [2021-11-19 14:44:51,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:51,438 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:51,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:51,439 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:51,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:44:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:52,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 1415 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 14:44:52,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:54,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:44:54,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:44:56,242 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:56,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28960434] [2021-11-19 14:44:56,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28960434] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:44:56,243 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:44:56,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 19 [2021-11-19 14:44:56,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877215743] [2021-11-19 14:44:56,243 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:56,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 14:44:56,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:56,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 14:44:56,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:44:56,245 INFO L87 Difference]: Start difference. First operand 168 states and 227 transitions. Second operand has 19 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-19 14:44:58,345 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:03,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:03,643 INFO L93 Difference]: Finished difference Result 335 states and 469 transitions. [2021-11-19 14:45:03,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-19 14:45:03,646 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 59 [2021-11-19 14:45:03,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:03,648 INFO L225 Difference]: With dead ends: 335 [2021-11-19 14:45:03,649 INFO L226 Difference]: Without dead ends: 187 [2021-11-19 14:45:03,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:45:03,652 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 74 mSDsluCounter, 2367 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 182 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:03,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 2552 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 341 Invalid, 1 Unknown, 182 Unchecked, 4.0s Time] [2021-11-19 14:45:03,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-19 14:45:03,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 169. [2021-11-19 14:45:03,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 118 states have (on average 1.2203389830508475) internal successors, (144), 120 states have internal predecessors, (144), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (45), 36 states have call predecessors, (45), 36 states have call successors, (45) [2021-11-19 14:45:03,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 226 transitions. [2021-11-19 14:45:03,675 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 226 transitions. Word has length 59 [2021-11-19 14:45:03,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:03,676 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 226 transitions. [2021-11-19 14:45:03,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-19 14:45:03,677 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 226 transitions. [2021-11-19 14:45:03,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-19 14:45:03,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:03,679 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:45:03,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:03,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:03,903 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:03,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:03,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1005612240, now seen corresponding path program 1 times [2021-11-19 14:45:03,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:03,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168330573] [2021-11-19 14:45:03,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:03,905 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:03,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:03,906 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:03,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:45:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:04,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 1420 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:45:04,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:04,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:45:04,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:05,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:45:05,065 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:05,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168330573] [2021-11-19 14:45:05,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168330573] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:05,065 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:05,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:45:05,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217388689] [2021-11-19 14:45:05,066 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:05,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:45:05,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:05,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:45:05,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:05,067 INFO L87 Difference]: Start difference. First operand 169 states and 226 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:45:05,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:05,128 INFO L93 Difference]: Finished difference Result 326 states and 445 transitions. [2021-11-19 14:45:05,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:45:05,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 61 [2021-11-19 14:45:05,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:05,131 INFO L225 Difference]: With dead ends: 326 [2021-11-19 14:45:05,131 INFO L226 Difference]: Without dead ends: 178 [2021-11-19 14:45:05,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:45:05,133 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 34 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:05,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 559 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:45:05,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-19 14:45:05,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 165. [2021-11-19 14:45:05,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 114 states have (on average 1.2017543859649122) internal successors, (137), 116 states have internal predecessors, (137), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (45), 36 states have call predecessors, (45), 36 states have call successors, (45) [2021-11-19 14:45:05,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 219 transitions. [2021-11-19 14:45:05,185 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 219 transitions. Word has length 61 [2021-11-19 14:45:05,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:05,185 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 219 transitions. [2021-11-19 14:45:05,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:45:05,186 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 219 transitions. [2021-11-19 14:45:05,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-19 14:45:05,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:05,193 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:45:05,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:05,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:05,417 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:05,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:05,418 INFO L85 PathProgramCache]: Analyzing trace with hash 611245454, now seen corresponding path program 1 times [2021-11-19 14:45:05,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:05,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824202800] [2021-11-19 14:45:05,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:05,420 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:05,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:05,420 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:05,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:45:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:06,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 1417 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:45:06,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:06,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:45:06,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:06,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:45:06,704 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:06,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824202800] [2021-11-19 14:45:06,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824202800] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:06,705 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:06,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-19 14:45:06,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394609864] [2021-11-19 14:45:06,705 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:06,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:45:06,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:06,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:45:06,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:45:06,707 INFO L87 Difference]: Start difference. First operand 165 states and 219 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (9), 5 states have call predecessors, (9), 1 states have call successors, (9) [2021-11-19 14:45:06,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:06,768 INFO L93 Difference]: Finished difference Result 240 states and 306 transitions. [2021-11-19 14:45:06,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:45:06,769 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (9), 5 states have call predecessors, (9), 1 states have call successors, (9) Word has length 61 [2021-11-19 14:45:06,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:06,771 INFO L225 Difference]: With dead ends: 240 [2021-11-19 14:45:06,771 INFO L226 Difference]: Without dead ends: 168 [2021-11-19 14:45:06,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:45:06,773 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 0 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:06,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1129 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:45:06,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-11-19 14:45:06,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-11-19 14:45:06,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 116 states have (on average 1.1982758620689655) internal successors, (139), 118 states have internal predecessors, (139), 37 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (46), 37 states have call predecessors, (46), 36 states have call successors, (46) [2021-11-19 14:45:06,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 222 transitions. [2021-11-19 14:45:06,789 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 222 transitions. Word has length 61 [2021-11-19 14:45:06,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:06,789 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 222 transitions. [2021-11-19 14:45:06,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (9), 5 states have call predecessors, (9), 1 states have call successors, (9) [2021-11-19 14:45:06,790 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 222 transitions. [2021-11-19 14:45:06,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 14:45:06,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:06,792 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:06,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:07,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:07,007 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:07,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:07,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1909925023, now seen corresponding path program 1 times [2021-11-19 14:45:07,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:07,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466518056] [2021-11-19 14:45:07,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:07,009 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:07,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:07,010 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:07,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:45:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:07,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:45:07,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:08,092 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 14:45:08,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:08,315 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 14:45:08,315 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:08,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466518056] [2021-11-19 14:45:08,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466518056] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:45:08,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:45:08,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2021-11-19 14:45:08,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346438843] [2021-11-19 14:45:08,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:08,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:45:08,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:08,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:45:08,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:45:08,317 INFO L87 Difference]: Start difference. First operand 168 states and 222 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-19 14:45:08,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:08,740 INFO L93 Difference]: Finished difference Result 307 states and 404 transitions. [2021-11-19 14:45:08,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:45:08,741 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 69 [2021-11-19 14:45:08,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:08,743 INFO L225 Difference]: With dead ends: 307 [2021-11-19 14:45:08,743 INFO L226 Difference]: Without dead ends: 165 [2021-11-19 14:45:08,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:45:08,745 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 96 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:08,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 770 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:45:08,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-19 14:45:08,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-11-19 14:45:08,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 114 states have (on average 1.1929824561403508) internal successors, (136), 115 states have internal predecessors, (136), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (42), 37 states have call predecessors, (42), 36 states have call successors, (42) [2021-11-19 14:45:08,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 215 transitions. [2021-11-19 14:45:08,760 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 215 transitions. Word has length 69 [2021-11-19 14:45:08,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:08,760 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 215 transitions. [2021-11-19 14:45:08,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-19 14:45:08,761 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 215 transitions. [2021-11-19 14:45:08,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-19 14:45:08,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:08,762 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:45:08,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:08,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:08,987 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:08,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:08,987 INFO L85 PathProgramCache]: Analyzing trace with hash 741336140, now seen corresponding path program 1 times [2021-11-19 14:45:08,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:08,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1831304876] [2021-11-19 14:45:08,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:08,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:08,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:08,989 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:08,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:45:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:09,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 14:45:09,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:12,229 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:45:12,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:25,090 WARN L227 SmtUtils]: Spent 9.73s on a formula simplification. DAG size of input: 526 DAG size of output: 272 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 14:45:25,104 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-19 14:45:25,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 132 treesize of output 771 [2021-11-19 14:53:12,487 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 14:53:12,487 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:53:12,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1831304876] [2021-11-19 14:53:12,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1831304876] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:53:12,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1163324054] [2021-11-19 14:53:12,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:53:12,488 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:53:12,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:53:12,489 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:53:12,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-19 14:53:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:53:15,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 14:53:15,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:53:15,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-19 14:53:18,211 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:53:18,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:53:19,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-19 14:53:20,474 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 14:53:20,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1163324054] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:53:20,474 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:53:20,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [12, 10] total 36 [2021-11-19 14:53:20,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617809617] [2021-11-19 14:53:20,475 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:53:20,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 14:53:20,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:53:20,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 14:53:20,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1139, Unknown=0, NotChecked=0, Total=1260 [2021-11-19 14:53:20,477 INFO L87 Difference]: Start difference. First operand 165 states and 215 transitions. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 18 states have internal predecessors, (94), 8 states have call successors, (16), 5 states have call predecessors, (16), 7 states have return successors, (15), 10 states have call predecessors, (15), 7 states have call successors, (15) [2021-11-19 14:53:22,638 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:53:24,648 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:53:26,659 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:53:29,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:53:29,674 INFO L93 Difference]: Finished difference Result 272 states and 348 transitions. [2021-11-19 14:53:29,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 14:53:29,675 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 18 states have internal predecessors, (94), 8 states have call successors, (16), 5 states have call predecessors, (16), 7 states have return successors, (15), 10 states have call predecessors, (15), 7 states have call successors, (15) Word has length 73 [2021-11-19 14:53:29,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:53:29,678 INFO L225 Difference]: With dead ends: 272 [2021-11-19 14:53:29,678 INFO L226 Difference]: Without dead ends: 241 [2021-11-19 14:53:29,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 252 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=165, Invalid=1557, Unknown=0, NotChecked=0, Total=1722 [2021-11-19 14:53:29,680 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 76 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1722 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 278 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:53:29,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 1722 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 314 Invalid, 3 Unknown, 278 Unchecked, 7.7s Time] [2021-11-19 14:53:29,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-19 14:53:29,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 212. [2021-11-19 14:53:29,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 152 states have (on average 1.1776315789473684) internal successors, (179), 156 states have internal predecessors, (179), 41 states have call successors, (41), 14 states have call predecessors, (41), 18 states have return successors, (52), 41 states have call predecessors, (52), 40 states have call successors, (52) [2021-11-19 14:53:29,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 272 transitions. [2021-11-19 14:53:29,700 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 272 transitions. Word has length 73 [2021-11-19 14:53:29,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:53:29,700 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 272 transitions. [2021-11-19 14:53:29,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 18 states have internal predecessors, (94), 8 states have call successors, (16), 5 states have call predecessors, (16), 7 states have return successors, (15), 10 states have call predecessors, (15), 7 states have call successors, (15) [2021-11-19 14:53:29,701 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 272 transitions. [2021-11-19 14:53:29,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 14:53:29,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:53:29,703 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:53:29,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:53:29,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:53:30,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:53:30,120 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:53:30,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:53:30,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1026913100, now seen corresponding path program 1 times [2021-11-19 14:53:30,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:53:30,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785099264] [2021-11-19 14:53:30,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:53:30,122 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:53:30,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:53:30,123 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:53:30,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f58c2a36-b942-4e30-9d95-680b6a406223/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:53:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:53:31,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-19 14:53:31,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:53:33,576 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:53:33,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:53:49,739 WARN L227 SmtUtils]: Spent 11.37s on a formula simplification. DAG size of input: 526 DAG size of output: 272 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 14:53:49,741 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-19 14:53:49,742 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