./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_mul_size_checked_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_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/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_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/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_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/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 85d674f1fa2637b1938916a29638137d4fa709dbd0bf61de12fff951c3252955 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:51:37,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:51:37,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:51:38,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:51:38,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:51:38,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:51:38,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:51:38,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:51:38,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:51:38,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:51:38,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:51:38,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:51:38,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:51:38,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:51:38,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:51:38,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:51:38,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:51:38,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:51:38,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:51:38,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:51:38,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:51:38,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:51:38,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:51:38,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:51:38,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:51:38,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:51:38,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:51:38,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:51:38,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:51:38,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:51:38,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:51:38,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:51:38,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:51:38,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:51:38,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:51:38,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:51:38,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:51:38,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:51:38,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:51:38,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:51:38,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:51:38,078 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 22:51:38,102 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:51:38,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:51:38,104 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:51:38,104 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:51:38,105 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:51:38,105 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:51:38,105 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:51:38,106 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:51:38,106 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:51:38,107 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:51:38,107 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:51:38,107 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:51:38,108 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:51:38,108 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:51:38,108 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:51:38,109 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:51:38,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:51:38,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:51:38,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:51:38,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:51:38,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:51:38,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:51:38,111 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:51:38,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:51:38,112 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:51:38,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:51:38,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:51:38,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:51:38,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:51:38,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:51:38,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:51:38,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:51:38,114 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:51:38,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:51:38,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:51:38,115 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:51:38,116 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:51:38,116 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_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85d674f1fa2637b1938916a29638137d4fa709dbd0bf61de12fff951c3252955 [2021-11-12 22:51:38,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:51:38,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:51:38,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:51:38,399 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:51:38,400 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:51:38,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i [2021-11-12 22:51:38,476 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/data/e3affeea0/3158ccbb80d241f6b75568833cd2741b/FLAGa48c0ec3b [2021-11-12 22:51:39,250 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:51:39,250 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i [2021-11-12 22:51:39,282 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/data/e3affeea0/3158ccbb80d241f6b75568833cd2741b/FLAGa48c0ec3b [2021-11-12 22:51:39,399 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/data/e3affeea0/3158ccbb80d241f6b75568833cd2741b [2021-11-12 22:51:39,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:51:39,405 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:51:39,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:51:39,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:51:39,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:51:39,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:51:39" (1/1) ... [2021-11-12 22:51:39,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57f37fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:39, skipping insertion in model container [2021-11-12 22:51:39,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:51:39" (1/1) ... [2021-11-12 22:51:39,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:51:39,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:51:39,829 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_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i[4494,4507] [2021-11-12 22:51:39,837 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_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i[4554,4567] [2021-11-12 22:51:39,866 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:51:39,873 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:51:40,616 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:40,626 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:40,628 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:40,629 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:40,631 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:40,649 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:40,650 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:40,652 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:40,652 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:40,654 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:40,656 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:40,656 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:40,657 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:40,955 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:51:40,957 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:51:40,958 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:51:40,959 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:51:40,960 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:51:40,961 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:51:40,961 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:51:40,962 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:51:40,963 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:51:40,963 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:51:41,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:51:41,136 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:51:41,150 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_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i[4494,4507] [2021-11-12 22:51:41,151 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_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i[4554,4567] [2021-11-12 22:51:41,152 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:51:41,153 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:51:41,270 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:41,270 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:41,276 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:41,278 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:41,283 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:41,291 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:41,299 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:41,304 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:41,306 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:41,308 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:41,310 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:41,312 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:41,312 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:41,378 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:51:41,380 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:51:41,380 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:51:41,381 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:51:41,382 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:51:41,383 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:51:41,383 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:51:41,384 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:51:41,385 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:51:41,385 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:51:41,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:51:41,604 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:51:41,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:41 WrapperNode [2021-11-12 22:51:41,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:51:41,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:51:41,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:51:41,606 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:51:41,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:41" (1/1) ... [2021-11-12 22:51:41,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:41" (1/1) ... [2021-11-12 22:51:41,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:51:41,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:51:41,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:51:41,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:51:41,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:41" (1/1) ... [2021-11-12 22:51:41,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:41" (1/1) ... [2021-11-12 22:51:41,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:41" (1/1) ... [2021-11-12 22:51:41,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:41" (1/1) ... [2021-11-12 22:51:41,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:41" (1/1) ... [2021-11-12 22:51:41,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:41" (1/1) ... [2021-11-12 22:51:41,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:41" (1/1) ... [2021-11-12 22:51:41,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:51:41,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:51:41,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:51:41,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:51:41,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:41" (1/1) ... [2021-11-12 22:51:41,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:51:41,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:51:41,901 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:51:41,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:51:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_u64_checked [2021-11-12 22:51:41,944 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_u64_checked [2021-11-12 22:51:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:51:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 22:51:41,945 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 22:51:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-12 22:51:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-12 22:51:41,945 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-12 22:51:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 22:51:41,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 22:51:41,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:51:41,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:51:41,946 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint32_t [2021-11-12 22:51:41,946 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint32_t [2021-11-12 22:51:41,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:51:41,946 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-12 22:51:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 22:51:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-12 22:51:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-12 22:51:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-12 22:51:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-12 22:51:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-12 22:51:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:51:51,413 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:51:51,414 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 22:51:51,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:51:51 BoogieIcfgContainer [2021-11-12 22:51:51,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:51:51,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:51:51,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:51:51,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:51:51,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:51:39" (1/3) ... [2021-11-12 22:51:51,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765eb4fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:51:51, skipping insertion in model container [2021-11-12 22:51:51,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:41" (2/3) ... [2021-11-12 22:51:51,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765eb4fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:51:51, skipping insertion in model container [2021-11-12 22:51:51,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:51:51" (3/3) ... [2021-11-12 22:51:51,428 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_mul_size_checked_harness.i [2021-11-12 22:51:51,433 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:51:51,434 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:51:51,495 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:51:51,507 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 22:51:51,507 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:51:51,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 34 states have internal predecessors, (38), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-12 22:51:51,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 22:51:51,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:51,547 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-12 22:51:51,547 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:51:51,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:51,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1775785854, now seen corresponding path program 1 times [2021-11-12 22:51:51,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:51:51,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041034283] [2021-11-12 22:51:51,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:51,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:51:52,001 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-12 22:51:52,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1007177660] [2021-11-12 22:51:52,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:52,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:51:52,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:51:52,014 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:51:52,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-12 22:59:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:12,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 2178 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-12 22:59:12,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:59:12,796 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 13 treesize of output 9 [2021-11-12 22:59:12,918 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 17 treesize of output 9 [2021-11-12 22:59:13,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:59:13,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:59:13,494 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 42 treesize of output 38 [2021-11-12 22:59:13,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:59:13,639 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:13,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041034283] [2021-11-12 22:59:13,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:59:13,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007177660] [2021-11-12 22:59:13,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007177660] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:13,646 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:13,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 15 [2021-11-12 22:59:13,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928057179] [2021-11-12 22:59:13,652 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:13,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-12 22:59:13,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:13,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-12 22:59:13,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:59:13,705 INFO L87 Difference]: Start difference. First operand has 55 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 34 states have internal predecessors, (38), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 6 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-12 22:59:15,783 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:59:16,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:16,590 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2021-11-12 22:59:16,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 22:59:16,593 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 6 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 27 [2021-11-12 22:59:16,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:16,600 INFO L225 Difference]: With dead ends: 77 [2021-11-12 22:59:16,600 INFO L226 Difference]: Without dead ends: 52 [2021-11-12 22:59:16,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-12 22:59:16,607 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 24 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2421.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.45ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2673.51ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:16,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 520 Invalid, 213 Unknown, 0 Unchecked, 13.45ms Time], IncrementalHoareTripleChecker [5 Valid, 207 Invalid, 1 Unknown, 0 Unchecked, 2673.51ms Time] [2021-11-12 22:59:16,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-12 22:59:16,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2021-11-12 22:59:16,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 31 states have internal predecessors, (33), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-12 22:59:16,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2021-11-12 22:59:16,653 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 27 [2021-11-12 22:59:16,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:16,654 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2021-11-12 22:59:16,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 6 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-12 22:59:16,655 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2021-11-12 22:59:16,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 22:59:16,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:16,658 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-12 22:59:16,858 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forcibly destroying the process [2021-11-12 22:59:16,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:59:16,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-12 22:59:16,901 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:59:16,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:16,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1772032188, now seen corresponding path program 1 times [2021-11-12 22:59:16,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:16,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201927095] [2021-11-12 22:59:16,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:16,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:17,070 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-12 22:59:17,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1662475786] [2021-11-12 22:59:17,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:17,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:59:17,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:59:17,072 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:59:17,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-12 22:59:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:17,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 2175 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:59:17,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:59:18,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:59:18,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:59:18,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:59:18,240 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:18,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201927095] [2021-11-12 22:59:18,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:59:18,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662475786] [2021-11-12 22:59:18,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662475786] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:18,241 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:18,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 22:59:18,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833153118] [2021-11-12 22:59:18,242 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:18,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:59:18,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:18,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:59:18,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:59:18,244 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-12 22:59:20,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:59:20,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:20,560 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2021-11-12 22:59:20,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:59:20,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 27 [2021-11-12 22:59:20,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:20,563 INFO L225 Difference]: With dead ends: 56 [2021-11-12 22:59:20,563 INFO L226 Difference]: Without dead ends: 47 [2021-11-12 22:59:20,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:59:20,565 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2127.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2303.63ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:20,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 28 Unknown, 0 Unchecked, 1.46ms Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 2303.63ms Time] [2021-11-12 22:59:20,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-12 22:59:20,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-12 22:59:20,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 25 states have (on average 1.16) internal successors, (29), 28 states have internal predecessors, (29), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-12 22:59:20,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2021-11-12 22:59:20,588 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 27 [2021-11-12 22:59:20,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:20,589 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2021-11-12 22:59:20,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-12 22:59:20,590 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2021-11-12 22:59:20,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 22:59:20,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:20,592 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-12 22:59:20,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:59:20,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:59:20,819 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:59:20,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:20,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1438170171, now seen corresponding path program 1 times [2021-11-12 22:59:20,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:20,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904963134] [2021-11-12 22:59:20,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:20,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:20,987 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-12 22:59:20,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878129932] [2021-11-12 22:59:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:20,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:59:20,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:59:20,989 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:59:21,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7458a8f-2cfc-4598-ad89-57d86ec0abc0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process