./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9248d62da968900adf628e209d21739bec2ffe4f64c1d45016706037787190a6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:20:55,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:20:55,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:20:55,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:20:55,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:20:55,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:20:55,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:20:55,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:20:55,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:20:55,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:20:55,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:20:55,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:20:55,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:20:55,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:20:55,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:20:55,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:20:55,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:20:55,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:20:55,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:20:55,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:20:55,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:20:55,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:20:55,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:20:55,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:20:55,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:20:55,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:20:55,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:20:55,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:20:55,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:20:55,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:20:55,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:20:55,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:20:55,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:20:55,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:20:55,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:20:55,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:20:55,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:20:55,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:20:55,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:20:55,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:20:55,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:20:55,357 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:20:55,400 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:20:55,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:20:55,402 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:20:55,402 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:20:55,402 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:20:55,403 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:20:55,403 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:20:55,403 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:20:55,409 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:20:55,410 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:20:55,411 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:20:55,411 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:20:55,411 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:20:55,411 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:20:55,412 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:20:55,412 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:20:55,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:20:55,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:20:55,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:20:55,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:20:55,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:20:55,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:20:55,414 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:20:55,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:20:55,414 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:20:55,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:20:55,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:20:55,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:20:55,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:20:55,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:20:55,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:20:55,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:20:55,418 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:20:55,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:20:55,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:20:55,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:20:55,419 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:20:55,419 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_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9248d62da968900adf628e209d21739bec2ffe4f64c1d45016706037787190a6 [2021-11-12 23:20:55,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:20:55,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:20:55,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:20:55,698 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:20:55,699 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:20:55,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2021-11-12 23:20:55,777 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/data/fe7aa8c48/aea424fc5d684fc4847990c145340383/FLAG44d1e7a11 [2021-11-12 23:20:56,867 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:20:56,868 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2021-11-12 23:20:56,921 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/data/fe7aa8c48/aea424fc5d684fc4847990c145340383/FLAG44d1e7a11 [2021-11-12 23:20:57,214 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/data/fe7aa8c48/aea424fc5d684fc4847990c145340383 [2021-11-12 23:20:57,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:20:57,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:20:57,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:20:57,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:20:57,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:20:57,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:20:57" (1/1) ... [2021-11-12 23:20:57,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e20c02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:57, skipping insertion in model container [2021-11-12 23:20:57,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:20:57" (1/1) ... [2021-11-12 23:20:57,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:20:57,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:20:57,692 WARN L228 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_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4496,4509] [2021-11-12 23:20:57,700 WARN L228 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_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4556,4569] [2021-11-12 23:20:57,723 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:20:57,730 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:20:58,664 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:58,664 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:58,665 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:58,666 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:58,667 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:58,682 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:58,683 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:58,685 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:58,685 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:59,090 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:20:59,092 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:20:59,093 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:20:59,095 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:20:59,097 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:20:59,097 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:20:59,109 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:20:59,110 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:20:59,110 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:20:59,111 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:20:59,271 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:20:59,369 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:59,369 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:59,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:20:59,479 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) [2021-11-12 23:20:59,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3fd661fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:59, skipping insertion in model container [2021-11-12 23:20:59,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:20:59,480 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:20:59,482 INFO L158 Benchmark]: Toolchain (without parser) took 2261.45ms. Allocated memory is still 140.5MB. Free memory was 98.4MB in the beginning and 60.5MB in the end (delta: 37.9MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. [2021-11-12 23:20:59,482 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 96.5MB. Free memory is still 52.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:20:59,483 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2256.00ms. Allocated memory is still 140.5MB. Free memory was 98.1MB in the beginning and 60.5MB in the end (delta: 37.6MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. [2021-11-12 23:20:59,485 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 96.5MB. Free memory is still 52.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2256.00ms. Allocated memory is still 140.5MB. Free memory was 98.1MB in the beginning and 60.5MB in the end (delta: 37.6MB). Peak memory consumption was 38.3MB. 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_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9248d62da968900adf628e209d21739bec2ffe4f64c1d45016706037787190a6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:21:02,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:21:02,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:21:02,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:21:02,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:21:02,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:21:02,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:21:02,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:21:02,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:21:02,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:21:02,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:21:02,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:21:02,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:21:02,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:21:02,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:21:02,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:21:02,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:21:02,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:21:02,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:21:02,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:21:02,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:21:02,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:21:02,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:21:02,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:21:02,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:21:02,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:21:02,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:21:02,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:21:02,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:21:02,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:21:02,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:21:02,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:21:02,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:21:02,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:21:02,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:21:02,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:21:02,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:21:02,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:21:02,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:21:02,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:21:02,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:21:02,230 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:21:02,277 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:21:02,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:21:02,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:21:02,278 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:21:02,278 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:21:02,279 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:21:02,279 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:21:02,279 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:21:02,279 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:21:02,279 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:21:02,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:21:02,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:21:02,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:21:02,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:21:02,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:21:02,282 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:21:02,282 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:21:02,283 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:21:02,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:21:02,283 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:21:02,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:21:02,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:21:02,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:21:02,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:21:02,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:21:02,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:21:02,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:21:02,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:21:02,285 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:21:02,285 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:21:02,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:21:02,285 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:21:02,285 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:21:02,286 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_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9248d62da968900adf628e209d21739bec2ffe4f64c1d45016706037787190a6 [2021-11-12 23:21:02,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:21:02,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:21:02,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:21:02,702 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:21:02,704 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:21:02,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2021-11-12 23:21:02,778 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/data/8e571cac1/cfe5a6a6b25a425a83f0187fceca07d6/FLAG519d42070 [2021-11-12 23:21:03,785 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:21:03,790 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2021-11-12 23:21:03,832 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/data/8e571cac1/cfe5a6a6b25a425a83f0187fceca07d6/FLAG519d42070 [2021-11-12 23:21:04,198 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/data/8e571cac1/cfe5a6a6b25a425a83f0187fceca07d6 [2021-11-12 23:21:04,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:21:04,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:21:04,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:21:04,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:21:04,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:21:04,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:21:04" (1/1) ... [2021-11-12 23:21:04,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ce28513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:04, skipping insertion in model container [2021-11-12 23:21:04,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:21:04" (1/1) ... [2021-11-12 23:21:04,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:21:04,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:21:04,679 WARN L228 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_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4496,4509] [2021-11-12 23:21:04,690 WARN L228 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_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4556,4569] [2021-11-12 23:21:04,728 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:21:04,737 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:21:05,898 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:05,902 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:05,903 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:05,904 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:05,905 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:05,921 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:05,925 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:05,938 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:05,939 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:06,434 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:21:06,435 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:21:06,437 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:21:06,438 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:21:06,440 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:21:06,441 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:21:06,441 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:21:06,442 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:21:06,443 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:21:06,444 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:21:06,701 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:21:06,869 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:06,871 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:06,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:21:07,090 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:21:07,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:21:07,219 WARN L228 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_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4496,4509] [2021-11-12 23:21:07,219 WARN L228 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_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4556,4569] [2021-11-12 23:21:07,221 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:21:07,224 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:21:07,273 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:07,274 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:07,274 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:07,275 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:07,275 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:07,288 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:07,289 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:07,290 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:07,291 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:07,345 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:21:07,345 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:21:07,347 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:21:07,347 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:21:07,352 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:21:07,352 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:21:07,353 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:21:07,353 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:21:07,354 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:21:07,360 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:21:07,402 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:21:07,486 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:07,487 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:07,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:21:07,592 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:21:07,621 WARN L228 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_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4496,4509] [2021-11-12 23:21:07,622 WARN L228 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_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4556,4569] [2021-11-12 23:21:07,624 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:21:07,625 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:21:07,671 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:07,672 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:07,672 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:07,673 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:07,673 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:07,679 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:07,680 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:07,681 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:07,681 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:07,716 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:21:07,717 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:21:07,718 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:21:07,718 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:21:07,719 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:21:07,720 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:21:07,720 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:21:07,721 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:21:07,722 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:21:07,723 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:21:07,779 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:21:07,900 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:07,901 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:07,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:21:08,271 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:21:08,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:08 WrapperNode [2021-11-12 23:21:08,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:21:08,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:21:08,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:21:08,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:21:08,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:08" (1/1) ... [2021-11-12 23:21:08,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:08" (1/1) ... [2021-11-12 23:21:08,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:21:08,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:21:08,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:21:08,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:21:08,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:08" (1/1) ... [2021-11-12 23:21:08,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:08" (1/1) ... [2021-11-12 23:21:08,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:08" (1/1) ... [2021-11-12 23:21:08,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:08" (1/1) ... [2021-11-12 23:21:08,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:08" (1/1) ... [2021-11-12 23:21:08,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:08" (1/1) ... [2021-11-12 23:21:08,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:08" (1/1) ... [2021-11-12 23:21:08,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:21:08,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:21:08,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:21:08,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:21:08,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:08" (1/1) ... [2021-11-12 23:21:08,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:21:08,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:21:08,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:21:08,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:21:08,917 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-12 23:21:08,917 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-12 23:21:08,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:21:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 23:21:08,918 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 23:21:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:21:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:21:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-12 23:21:08,920 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-12 23:21:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-12 23:21:08,920 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-12 23:21:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:21:08,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:21:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:21:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:21:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-12 23:21:08,922 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-12 23:21:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:21:08,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:21:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 23:21:08,922 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 23:21:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:21:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-12 23:21:08,923 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-12 23:21:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:21:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-12 23:21:08,924 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-12 23:21:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:21:08,924 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:21:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:21:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:21:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-12 23:21:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-12 23:21:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-11-12 23:21:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-11-12 23:21:08,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:21:08,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:21:08,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:21:08,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:21:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:21:08,931 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-12 23:21:08,931 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-12 23:21:08,931 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-12 23:21:08,932 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-12 23:21:24,910 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:21:24,910 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-12 23:21:24,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:21:24 BoogieIcfgContainer [2021-11-12 23:21:24,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:21:24,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:21:24,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:21:24,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:21:24,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:21:04" (1/3) ... [2021-11-12 23:21:24,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b6ddf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:21:24, skipping insertion in model container [2021-11-12 23:21:24,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:08" (2/3) ... [2021-11-12 23:21:24,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b6ddf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:21:24, skipping insertion in model container [2021-11-12 23:21:24,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:21:24" (3/3) ... [2021-11-12 23:21:24,921 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_init_copy_harness.i [2021-11-12 23:21:24,926 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:21:24,927 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:21:24,976 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:21:24,983 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 [2021-11-12 23:21:24,983 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:21:25,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 122 states have (on average 1.221311475409836) internal successors, (149), 121 states have internal predecessors, (149), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-11-12 23:21:25,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-12 23:21:25,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:21:25,015 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:21:25,016 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:21:25,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:21:25,021 INFO L85 PathProgramCache]: Analyzing trace with hash -283420546, now seen corresponding path program 1 times [2021-11-12 23:21:25,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:21:25,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139754882] [2021-11-12 23:21:25,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:25,043 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:21:25,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:21:25,050 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:21:25,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:21:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:29,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 1842 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:21:29,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:29,755 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-12 23:21:29,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:30,082 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-12 23:21:30,083 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:21:30,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139754882] [2021-11-12 23:21:30,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1139754882] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:21:30,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:21:30,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-12 23:21:30,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304436498] [2021-11-12 23:21:30,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:21:30,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:21:30,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:21:30,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:21:30,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:21:30,139 INFO L87 Difference]: Start difference. First operand has 185 states, 122 states have (on average 1.221311475409836) internal successors, (149), 121 states have internal predecessors, (149), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-12 23:21:30,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:21:30,223 INFO L93 Difference]: Finished difference Result 366 states and 520 transitions. [2021-11-12 23:21:30,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:21:30,226 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 82 [2021-11-12 23:21:30,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:21:30,253 INFO L225 Difference]: With dead ends: 366 [2021-11-12 23:21:30,253 INFO L226 Difference]: Without dead ends: 179 [2021-11-12 23:21:30,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:21:30,271 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.39ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:21:30,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 6.39ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:21:30,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-12 23:21:30,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-11-12 23:21:30,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 114 states have (on average 1.1666666666666667) internal successors, (133), 115 states have internal predecessors, (133), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-12 23:21:30,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 230 transitions. [2021-11-12 23:21:30,347 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 230 transitions. Word has length 82 [2021-11-12 23:21:30,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:21:30,348 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 230 transitions. [2021-11-12 23:21:30,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-12 23:21:30,348 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 230 transitions. [2021-11-12 23:21:30,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-12 23:21:30,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:21:30,355 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:21:30,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-12 23:21:30,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:21:30,578 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:21:30,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:21:30,579 INFO L85 PathProgramCache]: Analyzing trace with hash 426190495, now seen corresponding path program 1 times [2021-11-12 23:21:30,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:21:30,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716043297] [2021-11-12 23:21:30,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:30,587 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:21:30,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:21:30,588 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:21:30,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:21:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:34,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:21:34,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:21:35,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:35,971 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-12 23:21:35,971 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:21:35,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716043297] [2021-11-12 23:21:35,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716043297] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:21:35,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:21:35,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 23:21:35,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605754352] [2021-11-12 23:21:35,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:21:35,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:21:35,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:21:35,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:21:35,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:21:35,975 INFO L87 Difference]: Start difference. First operand 179 states and 230 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-12 23:21:36,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:21:36,277 INFO L93 Difference]: Finished difference Result 347 states and 448 transitions. [2021-11-12 23:21:36,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:21:36,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 92 [2021-11-12 23:21:36,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:21:36,283 INFO L225 Difference]: With dead ends: 347 [2021-11-12 23:21:36,283 INFO L226 Difference]: Without dead ends: 182 [2021-11-12 23:21:36,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:21:36,285 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 67 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 235.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.84ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 264.03ms IncrementalHoareTripleChecker+Time [2021-11-12 23:21:36,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 564 Invalid, 39 Unknown, 0 Unchecked, 6.84ms Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 264.03ms Time] [2021-11-12 23:21:36,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-12 23:21:36,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-11-12 23:21:36,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 116 states have (on average 1.1637931034482758) internal successors, (135), 118 states have internal predecessors, (135), 49 states have call successors, (49), 15 states have call predecessors, (49), 16 states have return successors, (52), 48 states have call predecessors, (52), 48 states have call successors, (52) [2021-11-12 23:21:36,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 236 transitions. [2021-11-12 23:21:36,309 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 236 transitions. Word has length 92 [2021-11-12 23:21:36,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:21:36,310 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 236 transitions. [2021-11-12 23:21:36,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-12 23:21:36,311 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 236 transitions. [2021-11-12 23:21:36,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-12 23:21:36,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:21:36,314 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:21:36,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:21:36,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:21:36,538 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:21:36,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:21:36,539 INFO L85 PathProgramCache]: Analyzing trace with hash -772706796, now seen corresponding path program 1 times [2021-11-12 23:21:36,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:21:36,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593180766] [2021-11-12 23:21:36,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:36,543 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:21:36,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:21:36,546 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:21:36,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:21:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:40,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 1871 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 23:21:40,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:41,099 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 [2021-11-12 23:21:42,417 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:21:42,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:43,512 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 [2021-11-12 23:21:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-12 23:21:43,924 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:21:43,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593180766] [2021-11-12 23:21:43,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593180766] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:21:43,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:21:43,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 19 [2021-11-12 23:21:43,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471544160] [2021-11-12 23:21:43,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:21:43,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:21:43,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:21:43,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:21:43,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:21:43,927 INFO L87 Difference]: Start difference. First operand 182 states and 236 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 10 states have internal predecessors, (53), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-12 23:21:46,205 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:21:48,025 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:21:48,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:21:48,302 INFO L93 Difference]: Finished difference Result 370 states and 476 transitions. [2021-11-12 23:21:48,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 23:21:48,303 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 10 states have internal predecessors, (53), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 98 [2021-11-12 23:21:48,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:21:48,306 INFO L225 Difference]: With dead ends: 370 [2021-11-12 23:21:48,306 INFO L226 Difference]: Without dead ends: 195 [2021-11-12 23:21:48,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-12 23:21:48,308 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 23 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4094.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.26ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 4233.13ms IncrementalHoareTripleChecker+Time [2021-11-12 23:21:48,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 1877 Invalid, 163 Unknown, 0 Unchecked, 14.26ms Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 1 Unknown, 97 Unchecked, 4233.13ms Time] [2021-11-12 23:21:48,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-12 23:21:48,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-11-12 23:21:48,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 128 states have (on average 1.171875) internal successors, (150), 130 states have internal predecessors, (150), 49 states have call successors, (49), 16 states have call predecessors, (49), 17 states have return successors, (53), 48 states have call predecessors, (53), 48 states have call successors, (53) [2021-11-12 23:21:48,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 252 transitions. [2021-11-12 23:21:48,339 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 252 transitions. Word has length 98 [2021-11-12 23:21:48,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:21:48,339 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 252 transitions. [2021-11-12 23:21:48,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 10 states have internal predecessors, (53), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-12 23:21:48,348 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 252 transitions. [2021-11-12 23:21:48,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-12 23:21:48,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:21:48,357 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:21:48,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:21:48,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:21:48,572 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:21:48,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:21:48,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1504674222, now seen corresponding path program 1 times [2021-11-12 23:21:48,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:21:48,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246150084] [2021-11-12 23:21:48,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:48,576 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:21:48,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:21:48,577 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:21:48,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:21:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:52,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:21:52,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:52,982 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-12 23:21:52,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:53,274 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-12 23:21:53,274 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:21:53,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246150084] [2021-11-12 23:21:53,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246150084] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:21:53,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:21:53,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-12 23:21:53,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586030567] [2021-11-12 23:21:53,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:21:53,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:21:53,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:21:53,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:21:53,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:21:53,276 INFO L87 Difference]: Start difference. First operand 195 states and 252 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 23:21:53,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:21:53,371 INFO L93 Difference]: Finished difference Result 373 states and 487 transitions. [2021-11-12 23:21:53,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:21:53,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 98 [2021-11-12 23:21:53,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:21:53,374 INFO L225 Difference]: With dead ends: 373 [2021-11-12 23:21:53,375 INFO L226 Difference]: Without dead ends: 201 [2021-11-12 23:21:53,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:21:53,377 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 20 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.46ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.16ms IncrementalHoareTripleChecker+Time [2021-11-12 23:21:53,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 682 Invalid, 16 Unknown, 0 Unchecked, 3.46ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 54.16ms Time] [2021-11-12 23:21:53,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-12 23:21:53,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 189. [2021-11-12 23:21:53,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 123 states have (on average 1.170731707317073) internal successors, (144), 124 states have internal predecessors, (144), 49 states have call successors, (49), 16 states have call predecessors, (49), 16 states have return successors, (52), 48 states have call predecessors, (52), 48 states have call successors, (52) [2021-11-12 23:21:53,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 245 transitions. [2021-11-12 23:21:53,398 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 245 transitions. Word has length 98 [2021-11-12 23:21:53,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:21:53,398 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 245 transitions. [2021-11-12 23:21:53,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 23:21:53,399 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 245 transitions. [2021-11-12 23:21:53,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-12 23:21:53,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:21:53,401 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:21:53,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:21:53,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:21:53,618 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:21:53,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:21:53,618 INFO L85 PathProgramCache]: Analyzing trace with hash 36818188, now seen corresponding path program 1 times [2021-11-12 23:21:53,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:21:53,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440134868] [2021-11-12 23:21:53,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:53,622 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:21:53,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:21:53,623 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:21:53,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:21:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:57,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 1880 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:21:57,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:58,676 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-12 23:21:58,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:59,428 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-12 23:21:59,428 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:21:59,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440134868] [2021-11-12 23:21:59,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440134868] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:21:59,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:21:59,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-12 23:21:59,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755169885] [2021-11-12 23:21:59,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:21:59,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:21:59,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:21:59,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:21:59,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:21:59,430 INFO L87 Difference]: Start difference. First operand 189 states and 245 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 23:22:01,671 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:22:03,691 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:22:06,493 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:22:08,506 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:22:08,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:08,957 INFO L93 Difference]: Finished difference Result 379 states and 500 transitions. [2021-11-12 23:22:08,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:22:08,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 102 [2021-11-12 23:22:08,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:08,963 INFO L225 Difference]: With dead ends: 379 [2021-11-12 23:22:08,963 INFO L226 Difference]: Without dead ends: 209 [2021-11-12 23:22:08,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:22:08,965 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 42 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9112.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.29ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 9342.64ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:08,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 833 Invalid, 123 Unknown, 0 Unchecked, 5.29ms Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 4 Unknown, 39 Unchecked, 9342.64ms Time] [2021-11-12 23:22:08,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-12 23:22:08,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 198. [2021-11-12 23:22:08,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 132 states have (on average 1.1818181818181819) internal successors, (156), 133 states have internal predecessors, (156), 49 states have call successors, (49), 16 states have call predecessors, (49), 16 states have return successors, (52), 48 states have call predecessors, (52), 48 states have call successors, (52) [2021-11-12 23:22:08,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 257 transitions. [2021-11-12 23:22:08,985 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 257 transitions. Word has length 102 [2021-11-12 23:22:08,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:08,986 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 257 transitions. [2021-11-12 23:22:08,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 23:22:08,986 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 257 transitions. [2021-11-12 23:22:08,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-12 23:22:08,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:08,988 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:22:09,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:09,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:09,214 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:09,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:09,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1179335538, now seen corresponding path program 1 times [2021-11-12 23:22:09,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:09,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141072888] [2021-11-12 23:22:09,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:09,218 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:09,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:09,219 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:09,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:22:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:13,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 1877 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 23:22:13,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:15,697 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-12 23:22:15,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:18,129 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-12 23:22:18,130 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:18,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141072888] [2021-11-12 23:22:18,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141072888] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:22:18,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:22:18,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 19 [2021-11-12 23:22:18,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131402527] [2021-11-12 23:22:18,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:18,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:22:18,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:18,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:22:18,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:22:18,132 INFO L87 Difference]: Start difference. First operand 198 states and 257 transitions. Second operand has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-12 23:22:20,381 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:22:22,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:22:27,296 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:22:29,311 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:22:30,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:30,359 INFO L93 Difference]: Finished difference Result 387 states and 513 transitions. [2021-11-12 23:22:30,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 23:22:30,362 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 102 [2021-11-12 23:22:30,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:30,365 INFO L225 Difference]: With dead ends: 387 [2021-11-12 23:22:30,365 INFO L226 Difference]: Without dead ends: 207 [2021-11-12 23:22:30,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:22:30,368 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 38 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10106.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.84ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 309 IncrementalHoareTripleChecker+Unchecked, 10460.43ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:30,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 2170 Invalid, 559 Unknown, 0 Unchecked, 10.84ms Time], IncrementalHoareTripleChecker [2 Valid, 244 Invalid, 4 Unknown, 309 Unchecked, 10460.43ms Time] [2021-11-12 23:22:30,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-12 23:22:30,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 203. [2021-11-12 23:22:30,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 136 states have (on average 1.161764705882353) internal successors, (158), 138 states have internal predecessors, (158), 49 states have call successors, (49), 16 states have call predecessors, (49), 17 states have return successors, (57), 48 states have call predecessors, (57), 48 states have call successors, (57) [2021-11-12 23:22:30,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 264 transitions. [2021-11-12 23:22:30,388 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 264 transitions. Word has length 102 [2021-11-12 23:22:30,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:30,388 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 264 transitions. [2021-11-12 23:22:30,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-12 23:22:30,389 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 264 transitions. [2021-11-12 23:22:30,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-12 23:22:30,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:30,391 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:22:30,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-12 23:22:30,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:30,614 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:30,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:30,615 INFO L85 PathProgramCache]: Analyzing trace with hash 113718986, now seen corresponding path program 1 times [2021-11-12 23:22:30,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:30,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517752810] [2021-11-12 23:22:30,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:30,618 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:30,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:30,619 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:30,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:22:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:34,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 1878 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:22:34,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:35,046 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-12 23:22:35,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-12 23:22:35,339 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:35,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517752810] [2021-11-12 23:22:35,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517752810] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:22:35,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:22:35,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-12 23:22:35,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632153761] [2021-11-12 23:22:35,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:35,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:22:35,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:35,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:22:35,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:22:35,341 INFO L87 Difference]: Start difference. First operand 203 states and 264 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 23:22:35,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:35,439 INFO L93 Difference]: Finished difference Result 391 states and 511 transitions. [2021-11-12 23:22:35,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:22:35,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 102 [2021-11-12 23:22:35,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:35,442 INFO L225 Difference]: With dead ends: 391 [2021-11-12 23:22:35,442 INFO L226 Difference]: Without dead ends: 207 [2021-11-12 23:22:35,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:22:35,444 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 34 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.81ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.93ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:35,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 673 Invalid, 13 Unknown, 0 Unchecked, 1.81ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 61.93ms Time] [2021-11-12 23:22:35,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-12 23:22:35,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 199. [2021-11-12 23:22:35,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 132 states have (on average 1.143939393939394) internal successors, (151), 134 states have internal predecessors, (151), 49 states have call successors, (49), 16 states have call predecessors, (49), 17 states have return successors, (57), 48 states have call predecessors, (57), 48 states have call successors, (57) [2021-11-12 23:22:35,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 257 transitions. [2021-11-12 23:22:35,461 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 257 transitions. Word has length 102 [2021-11-12 23:22:35,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:35,462 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 257 transitions. [2021-11-12 23:22:35,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 23:22:35,463 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 257 transitions. [2021-11-12 23:22:35,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-12 23:22:35,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:35,464 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:22:35,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:35,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:35,678 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:35,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:35,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2022176776, now seen corresponding path program 1 times [2021-11-12 23:22:35,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:35,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554429132] [2021-11-12 23:22:35,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:35,682 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:35,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:35,683 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:35,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:22:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:39,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:22:39,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:40,075 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-12 23:22:40,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:40,690 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-12 23:22:40,691 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:40,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554429132] [2021-11-12 23:22:40,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554429132] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:22:40,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:22:40,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-12 23:22:40,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609018076] [2021-11-12 23:22:40,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:40,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 23:22:40,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:40,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 23:22:40,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:22:40,693 INFO L87 Difference]: Start difference. First operand 199 states and 257 transitions. Second operand has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-12 23:22:41,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:41,362 INFO L93 Difference]: Finished difference Result 390 states and 509 transitions. [2021-11-12 23:22:41,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 23:22:41,363 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 102 [2021-11-12 23:22:41,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:41,366 INFO L225 Difference]: With dead ends: 390 [2021-11-12 23:22:41,366 INFO L226 Difference]: Without dead ends: 208 [2021-11-12 23:22:41,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:22:41,368 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 12 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 495.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.70ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 551.51ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:41,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1673 Invalid, 162 Unknown, 0 Unchecked, 5.70ms Time], IncrementalHoareTripleChecker [3 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 551.51ms Time] [2021-11-12 23:22:41,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-12 23:22:41,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 199. [2021-11-12 23:22:41,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 132 states have (on average 1.143939393939394) internal successors, (151), 134 states have internal predecessors, (151), 49 states have call successors, (49), 16 states have call predecessors, (49), 17 states have return successors, (57), 48 states have call predecessors, (57), 48 states have call successors, (57) [2021-11-12 23:22:41,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 257 transitions. [2021-11-12 23:22:41,401 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 257 transitions. Word has length 102 [2021-11-12 23:22:41,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:41,403 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 257 transitions. [2021-11-12 23:22:41,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-12 23:22:41,403 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 257 transitions. [2021-11-12 23:22:41,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-12 23:22:41,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:41,406 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:22:41,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:41,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:41,630 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:41,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:41,630 INFO L85 PathProgramCache]: Analyzing trace with hash -414923261, now seen corresponding path program 1 times [2021-11-12 23:22:41,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:41,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087619730] [2021-11-12 23:22:41,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:41,635 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:41,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:41,637 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:41,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:22:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:45,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 1879 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:22:45,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-12 23:22:46,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-12 23:22:46,564 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:46,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087619730] [2021-11-12 23:22:46,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087619730] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:22:46,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:22:46,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2021-11-12 23:22:46,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755679491] [2021-11-12 23:22:46,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:46,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:22:46,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:46,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:22:46,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:22:46,566 INFO L87 Difference]: Start difference. First operand 199 states and 257 transitions. Second operand has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-12 23:22:48,768 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:22:49,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:49,041 INFO L93 Difference]: Finished difference Result 397 states and 514 transitions. [2021-11-12 23:22:49,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:22:49,042 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 104 [2021-11-12 23:22:49,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:49,045 INFO L225 Difference]: With dead ends: 397 [2021-11-12 23:22:49,045 INFO L226 Difference]: Without dead ends: 229 [2021-11-12 23:22:49,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:22:49,047 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 81 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2352.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.72ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2422.08ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:49,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 832 Invalid, 97 Unknown, 0 Unchecked, 2.72ms Time], IncrementalHoareTripleChecker [42 Valid, 54 Invalid, 1 Unknown, 0 Unchecked, 2422.08ms Time] [2021-11-12 23:22:49,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-11-12 23:22:49,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 199. [2021-11-12 23:22:49,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 132 states have (on average 1.143939393939394) internal successors, (151), 134 states have internal predecessors, (151), 49 states have call successors, (49), 16 states have call predecessors, (49), 17 states have return successors, (56), 48 states have call predecessors, (56), 48 states have call successors, (56) [2021-11-12 23:22:49,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 256 transitions. [2021-11-12 23:22:49,062 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 256 transitions. Word has length 104 [2021-11-12 23:22:49,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:49,062 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 256 transitions. [2021-11-12 23:22:49,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-12 23:22:49,063 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 256 transitions. [2021-11-12 23:22:49,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-12 23:22:49,065 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:49,065 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:22:49,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:49,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:49,278 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:49,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:49,278 INFO L85 PathProgramCache]: Analyzing trace with hash 24902776, now seen corresponding path program 1 times [2021-11-12 23:22:49,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:49,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598229623] [2021-11-12 23:22:49,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:49,283 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:49,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:49,285 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:49,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:22:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:53,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 1892 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-12 23:22:53,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:57,131 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 50 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-12 23:22:57,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:23:12,346 WARN L227 SmtUtils]: Spent 11.93s 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) [2021-11-12 23:23:12,351 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-12 23:23:12,352 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 [2021-11-12 23:32:41,872 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-12 23:32:41,872 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:32:41,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598229623] [2021-11-12 23:32:41,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598229623] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:32:41,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [663997] [2021-11-12 23:32:41,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:32:41,873 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:32:41,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:32:41,874 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:32:41,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-12 23:32:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:32:43,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 1892 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:32:43,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:32:44,140 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-12 23:32:44,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:32:45,079 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-12 23:32:45,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [663997] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:32:45,080 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:32:45,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [12, 10] total 26 [2021-11-12 23:32:45,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221664293] [2021-11-12 23:32:45,081 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:32:45,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 23:32:45,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:32:45,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 23:32:45,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:32:45,083 INFO L87 Difference]: Start difference. First operand 199 states and 256 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-12 23:32:45,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:32:45,326 INFO L93 Difference]: Finished difference Result 285 states and 360 transitions. [2021-11-12 23:32:45,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:32:45,326 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 110 [2021-11-12 23:32:45,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:32:45,329 INFO L225 Difference]: With dead ends: 285 [2021-11-12 23:32:45,329 INFO L226 Difference]: Without dead ends: 193 [2021-11-12 23:32:45,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 402 SyntacticMatches, 10 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2021-11-12 23:32:45,331 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 1 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2032 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.25ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.98ms IncrementalHoareTripleChecker+Time [2021-11-12 23:32:45,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 2032 Invalid, 29 Unknown, 0 Unchecked, 3.25ms Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 93.98ms Time] [2021-11-12 23:32:45,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-12 23:32:45,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2021-11-12 23:32:45,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 128 states have (on average 1.1328125) internal successors, (145), 130 states have internal predecessors, (145), 47 states have call successors, (47), 16 states have call predecessors, (47), 17 states have return successors, (54), 46 states have call predecessors, (54), 46 states have call successors, (54) [2021-11-12 23:32:45,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 246 transitions. [2021-11-12 23:32:45,353 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 246 transitions. Word has length 110 [2021-11-12 23:32:45,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:32:45,353 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 246 transitions. [2021-11-12 23:32:45,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-12 23:32:45,354 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 246 transitions. [2021-11-12 23:32:45,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-12 23:32:45,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:32:45,356 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:32:45,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:32:45,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:32:45,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:32:45,764 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:32:45,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:32:45,765 INFO L85 PathProgramCache]: Analyzing trace with hash 524766110, now seen corresponding path program 1 times [2021-11-12 23:32:45,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:32:45,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561038319] [2021-11-12 23:32:45,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:32:45,769 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:32:45,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:32:45,770 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:32:45,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e080f8ea-8254-4b72-ba54-9b2db5c7ff6f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:32:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:32:49,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 1905 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-12 23:32:49,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:32:53,785 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 50 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-12 23:32:53,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:33:09,034 WARN L227 SmtUtils]: Spent 11.65s 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) [2021-11-12 23:33:09,038 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-12 23:33:09,039 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