./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_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_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/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_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/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_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/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 b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:22:09,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:22:09,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:22:09,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:22:09,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:22:09,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:22:09,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:22:09,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:22:09,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:22:09,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:22:09,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:22:09,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:22:09,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:22:09,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:22:09,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:22:09,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:22:09,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:22:09,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:22:09,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:22:09,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:22:09,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:22:09,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:22:09,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:22:09,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:22:09,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:22:09,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:22:09,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:22:09,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:22:09,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:22:09,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:22:09,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:22:09,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:22:09,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:22:09,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:22:09,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:22:09,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:22:09,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:22:09,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:22:09,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:22:09,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:22:09,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:22:09,968 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 22:22:10,007 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:22:10,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:22:10,019 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:22:10,019 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:22:10,019 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:22:10,020 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:22:10,020 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:22:10,020 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:22:10,020 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:22:10,020 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:22:10,027 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:22:10,028 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:22:10,028 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:22:10,029 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:22:10,029 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:22:10,029 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:22:10,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:22:10,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:22:10,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:22:10,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:22:10,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:22:10,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:22:10,031 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:22:10,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:22:10,032 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:22:10,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:22:10,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:22:10,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:22:10,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:22:10,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:22:10,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:22:10,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:22:10,034 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:22:10,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:22:10,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:22:10,035 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:22:10,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:22:10,035 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_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 [2021-11-12 22:22:10,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:22:10,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:22:10,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:22:10,343 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:22:10,344 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:22:10,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-11-12 22:22:10,425 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/data/6ecc7de2c/e511f880b9f846c983fa90b4aedcc3ed/FLAG4b5c65db7 [2021-11-12 22:22:11,190 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:22:11,191 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-11-12 22:22:11,249 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/data/6ecc7de2c/e511f880b9f846c983fa90b4aedcc3ed/FLAG4b5c65db7 [2021-11-12 22:22:11,752 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/data/6ecc7de2c/e511f880b9f846c983fa90b4aedcc3ed [2021-11-12 22:22:11,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:22:11,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:22:11,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:22:11,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:22:11,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:22:11,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:22:11" (1/1) ... [2021-11-12 22:22:11,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1da0f6d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:22:11, skipping insertion in model container [2021-11-12 22:22:11,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:22:11" (1/1) ... [2021-11-12 22:22:11,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:22:11,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:22:12,245 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_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2021-11-12 22:22:12,254 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_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2021-11-12 22:22:12,286 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:22:12,293 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:22:13,476 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:13,477 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:13,478 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:13,501 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:13,504 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:13,519 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:13,524 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:13,527 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:13,527 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:13,529 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:13,531 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:13,531 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:13,532 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:14,123 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:22:14,128 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:22:14,133 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:22:14,134 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:22:14,137 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:22:14,139 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:22:14,141 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:22:14,142 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:22:14,143 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:22:14,144 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:22:14,373 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:22:14,728 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:14,729 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:14,751 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:14,752 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:14,758 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:14,759 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:14,774 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:14,775 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:14,776 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:14,777 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:14,777 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:14,778 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:14,778 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:14,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:22:14,890 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 22:22:14,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@dad1661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:22:14, skipping insertion in model container [2021-11-12 22:22:14,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:22:14,892 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:22:14,894 INFO L158 Benchmark]: Toolchain (without parser) took 3136.25ms. Allocated memory was 94.4MB in the beginning and 115.3MB in the end (delta: 21.0MB). Free memory was 43.2MB in the beginning and 66.5MB in the end (delta: -23.4MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2021-11-12 22:22:14,894 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 94.4MB. Free memory is still 70.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:22:14,895 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3133.53ms. Allocated memory was 94.4MB in the beginning and 115.3MB in the end (delta: 21.0MB). Free memory was 43.0MB in the beginning and 67.2MB in the end (delta: -24.2MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2021-11-12 22:22:14,897 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 94.4MB. Free memory is still 70.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3133.53ms. Allocated memory was 94.4MB in the beginning and 115.3MB in the end (delta: 21.0MB). Free memory was 43.0MB in the beginning and 67.2MB in the end (delta: -24.2MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7051]: 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_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/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_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/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_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/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 b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:22:16,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:22:16,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:22:16,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:22:16,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:22:17,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:22:17,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:22:17,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:22:17,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:22:17,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:22:17,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:22:17,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:22:17,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:22:17,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:22:17,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:22:17,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:22:17,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:22:17,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:22:17,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:22:17,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:22:17,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:22:17,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:22:17,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:22:17,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:22:17,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:22:17,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:22:17,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:22:17,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:22:17,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:22:17,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:22:17,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:22:17,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:22:17,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:22:17,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:22:17,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:22:17,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:22:17,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:22:17,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:22:17,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:22:17,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:22:17,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:22:17,047 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 22:22:17,090 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:22:17,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:22:17,091 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:22:17,092 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:22:17,092 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:22:17,093 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:22:17,093 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:22:17,094 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:22:17,094 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:22:17,095 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:22:17,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:22:17,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:22:17,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:22:17,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:22:17,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:22:17,098 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:22:17,098 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:22:17,099 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:22:17,099 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:22:17,099 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:22:17,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:22:17,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:22:17,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:22:17,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:22:17,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:22:17,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:22:17,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:22:17,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:22:17,103 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:22:17,103 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:22:17,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:22:17,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:22:17,104 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:22:17,104 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_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 [2021-11-12 22:22:17,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:22:17,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:22:17,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:22:17,451 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:22:17,452 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:22:17,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-11-12 22:22:17,516 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/data/1a1f5f505/871303963acf4f7e86382a2fd517413b/FLAG5093d3e8f [2021-11-12 22:22:18,474 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:22:18,476 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-11-12 22:22:18,554 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/data/1a1f5f505/871303963acf4f7e86382a2fd517413b/FLAG5093d3e8f [2021-11-12 22:22:18,929 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/data/1a1f5f505/871303963acf4f7e86382a2fd517413b [2021-11-12 22:22:18,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:22:18,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:22:18,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:22:18,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:22:18,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:22:18,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:22:18" (1/1) ... [2021-11-12 22:22:18,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3078c7f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:22:18, skipping insertion in model container [2021-11-12 22:22:18,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:22:18" (1/1) ... [2021-11-12 22:22:18,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:22:19,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:22:19,554 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_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2021-11-12 22:22:19,564 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_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2021-11-12 22:22:19,598 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:22:19,606 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:22:20,746 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:20,749 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:20,751 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:20,753 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:20,756 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:20,782 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:20,783 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:20,788 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:20,791 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:20,795 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:20,798 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:20,801 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:20,801 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:21,417 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:22:21,419 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:22:21,420 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:22:21,421 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:22:21,423 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:22:21,423 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:22:21,424 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:22:21,425 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:22:21,427 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:22:21,433 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:22:21,644 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:22:22,017 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,018 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,040 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,041 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,046 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,047 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,061 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,062 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,063 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,064 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,064 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,064 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,065 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:22:22,182 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:22:22,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:22:22,251 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_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2021-11-12 22:22:22,252 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_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2021-11-12 22:22:22,254 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:22:22,257 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:22:22,315 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,315 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,315 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,316 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,316 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,327 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,329 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,330 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,330 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,331 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,331 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,332 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,332 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,372 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:22:22,373 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:22:22,374 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:22:22,376 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:22:22,377 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:22:22,377 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:22:22,378 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:22:22,378 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:22:22,379 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:22:22,379 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:22:22,413 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:22:22,525 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,526 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,533 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,534 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,537 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,537 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,545 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,545 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,546 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,546 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,547 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,547 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,548 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:22:22,587 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:22:22,600 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_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2021-11-12 22:22:22,601 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_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2021-11-12 22:22:22,602 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:22:22,603 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:22:22,647 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,647 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,648 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,648 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,649 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,654 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,654 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,655 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,656 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,656 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,657 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,657 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,658 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,684 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:22:22,685 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:22:22,685 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:22:22,686 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:22:22,687 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:22:22,687 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:22:22,688 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:22:22,688 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:22:22,688 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:22:22,689 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:22:22,706 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:22:22,897 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,897 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,907 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,908 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,911 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,912 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,923 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,924 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,941 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,941 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,941 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,942 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,942 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:22:22,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:22:23,472 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:22:23,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:22:23 WrapperNode [2021-11-12 22:22:23,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:22:23,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:22:23,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:22:23,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:22:23,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:22:23" (1/1) ... [2021-11-12 22:22:23,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:22:23" (1/1) ... [2021-11-12 22:22:23,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:22:23,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:22:23,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:22:23,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:22:23,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:22:23" (1/1) ... [2021-11-12 22:22:23,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:22:23" (1/1) ... [2021-11-12 22:22:23,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:22:23" (1/1) ... [2021-11-12 22:22:23,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:22:23" (1/1) ... [2021-11-12 22:22:23,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:22:23" (1/1) ... [2021-11-12 22:22:23,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:22:23" (1/1) ... [2021-11-12 22:22:23,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:22:23" (1/1) ... [2021-11-12 22:22:23,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:22:23,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:22:23,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:22:23,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:22:23,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:22:23" (1/1) ... [2021-11-12 22:22:23,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:22:23,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:22:23,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:22:23,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:22:23,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-12 22:22:23,980 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-12 22:22:23,980 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-12 22:22:23,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 22:22:23,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 22:22:23,981 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-12 22:22:23,981 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-12 22:22:23,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:22:23,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:22:23,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:22:23,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:22:23,982 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 22:22:23,982 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 22:22:23,982 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-12 22:22:23,982 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-12 22:22:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-12 22:22:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:22:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-12 22:22:23,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-12 22:22:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-12 22:22:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:22:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-12 22:22:23,984 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-12 22:22:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_find [2021-11-12 22:22:23,984 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_find [2021-11-12 22:22:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2021-11-12 22:22:23,985 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2021-11-12 22:22:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-12 22:22:23,985 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-12 22:22:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2021-11-12 22:22:23,985 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2021-11-12 22:22:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2021-11-12 22:22:23,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2021-11-12 22:22:23,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:22:23,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:22:23,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 22:22:23,986 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-12 22:22:23,986 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-12 22:22:23,987 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2021-11-12 22:22:23,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2021-11-12 22:22:23,987 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2021-11-12 22:22:23,987 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2021-11-12 22:22:23,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:22:23,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 22:22:23,988 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2021-11-12 22:22:23,988 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2021-11-12 22:22:23,988 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 22:22:23,988 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 22:22:23,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 22:22:23,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 22:22:23,989 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-12 22:22:23,989 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-12 22:22:23,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 22:22:23,989 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-12 22:22:23,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-12 22:22:23,989 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-12 22:22:23,990 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-12 22:22:23,990 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2021-11-12 22:22:23,990 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2021-11-12 22:22:24,801 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2021-11-12 22:22:24,923 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-11-12 22:22:25,525 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !true; [2021-11-12 22:22:36,601 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:22:36,601 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-12 22:22:36,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:22:36 BoogieIcfgContainer [2021-11-12 22:22:36,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:22:36,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:22:36,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:22:36,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:22:36,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:22:18" (1/3) ... [2021-11-12 22:22:36,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311d8334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:22:36, skipping insertion in model container [2021-11-12 22:22:36,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:22:23" (2/3) ... [2021-11-12 22:22:36,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311d8334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:22:36, skipping insertion in model container [2021-11-12 22:22:36,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:22:36" (3/3) ... [2021-11-12 22:22:36,611 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_find_harness.i [2021-11-12 22:22:36,616 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:22:36,616 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:22:36,663 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:22:36,668 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 22:22:36,669 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:22:36,690 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 146 states have (on average 1.2191780821917808) internal successors, (178), 144 states have internal predecessors, (178), 65 states have call successors, (65), 21 states have call predecessors, (65), 21 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2021-11-12 22:22:36,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-12 22:22:36,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:22:36,706 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:22:36,707 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:22:36,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:22:36,712 INFO L85 PathProgramCache]: Analyzing trace with hash -501442740, now seen corresponding path program 1 times [2021-11-12 22:22:36,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:22:36,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408499464] [2021-11-12 22:22:36,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:22:36,733 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:22:36,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:22:36,736 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:22:36,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:22:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:22:40,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 1895 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:22:40,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:22:41,498 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-12 22:22:41,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:22:41,958 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2021-11-12 22:22:41,959 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:22:41,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408499464] [2021-11-12 22:22:41,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408499464] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:22:41,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:22:41,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-12 22:22:41,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749559132] [2021-11-12 22:22:41,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:22:41,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:22:41,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:22:42,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:22:42,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:22:42,011 INFO L87 Difference]: Start difference. First operand has 231 states, 146 states have (on average 1.2191780821917808) internal successors, (178), 144 states have internal predecessors, (178), 65 states have call successors, (65), 21 states have call predecessors, (65), 21 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-12 22:22:42,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:22:42,099 INFO L93 Difference]: Finished difference Result 456 states and 647 transitions. [2021-11-12 22:22:42,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:22:42,101 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 178 [2021-11-12 22:22:42,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:22:42,117 INFO L225 Difference]: With dead ends: 456 [2021-11-12 22:22:42,118 INFO L226 Difference]: Without dead ends: 224 [2021-11-12 22:22:42,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 354 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 22:22:42,133 INFO L933 BasicCegarLoop]: 300 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, 300 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.71ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:22:42,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 5.71ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:22:42,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-11-12 22:22:42,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2021-11-12 22:22:42,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 137 states have (on average 1.2043795620437956) internal successors, (165), 138 states have internal predecessors, (165), 65 states have call successors, (65), 21 states have call predecessors, (65), 21 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-12 22:22:42,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 294 transitions. [2021-11-12 22:22:42,227 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 294 transitions. Word has length 178 [2021-11-12 22:22:42,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:22:42,228 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 294 transitions. [2021-11-12 22:22:42,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-12 22:22:42,229 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 294 transitions. [2021-11-12 22:22:42,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-12 22:22:42,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:22:42,249 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:22:42,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:22:42,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:22:42,463 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:22:42,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:22:42,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1965212336, now seen corresponding path program 1 times [2021-11-12 22:22:42,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:22:42,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135562802] [2021-11-12 22:22:42,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:22:42,471 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:22:42,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:22:42,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:22:42,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:22:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:22:46,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 1895 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:22:46,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:22:47,348 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-11-12 22:22:47,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:22:48,046 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-12 22:22:48,046 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:22:48,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135562802] [2021-11-12 22:22:48,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135562802] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:22:48,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:22:48,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 22:22:48,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070832058] [2021-11-12 22:22:48,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:22:48,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:22:48,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:22:48,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:22:48,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:22:48,052 INFO L87 Difference]: Start difference. First operand 224 states and 294 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-12 22:22:48,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:22:48,177 INFO L93 Difference]: Finished difference Result 443 states and 581 transitions. [2021-11-12 22:22:48,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:22:48,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 178 [2021-11-12 22:22:48,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:22:48,184 INFO L225 Difference]: With dead ends: 443 [2021-11-12 22:22:48,184 INFO L226 Difference]: Without dead ends: 228 [2021-11-12 22:22:48,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:22:48,187 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 2 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.22ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.12ms IncrementalHoareTripleChecker+Time [2021-11-12 22:22:48,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1164 Invalid, 11 Unknown, 0 Unchecked, 12.22ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 48.12ms Time] [2021-11-12 22:22:48,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-12 22:22:48,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-11-12 22:22:48,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 140 states have (on average 1.2) internal successors, (168), 141 states have internal predecessors, (168), 65 states have call successors, (65), 21 states have call predecessors, (65), 22 states have return successors, (65), 65 states have call predecessors, (65), 64 states have call successors, (65) [2021-11-12 22:22:48,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 298 transitions. [2021-11-12 22:22:48,231 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 298 transitions. Word has length 178 [2021-11-12 22:22:48,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:22:48,231 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 298 transitions. [2021-11-12 22:22:48,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-12 22:22:48,232 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 298 transitions. [2021-11-12 22:22:48,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-12 22:22:48,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:22:48,236 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:22:48,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-12 22:22:48,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:22:48,460 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:22:48,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:22:48,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1472595880, now seen corresponding path program 1 times [2021-11-12 22:22:48,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:22:48,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135069605] [2021-11-12 22:22:48,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:22:48,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:22:48,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:22:48,470 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:22:48,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:22:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:22:52,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 1909 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:22:52,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:22:53,134 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2021-11-12 22:22:53,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:22:53,843 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2021-11-12 22:22:53,844 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:22:53,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135069605] [2021-11-12 22:22:53,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135069605] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:22:53,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:22:53,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-12 22:22:53,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476777519] [2021-11-12 22:22:53,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:22:53,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:22:53,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:22:53,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:22:53,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:22:53,848 INFO L87 Difference]: Start difference. First operand 228 states and 298 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-12 22:22:54,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:22:54,300 INFO L93 Difference]: Finished difference Result 449 states and 585 transitions. [2021-11-12 22:22:54,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:22:54,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 190 [2021-11-12 22:22:54,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:22:54,304 INFO L225 Difference]: With dead ends: 449 [2021-11-12 22:22:54,304 INFO L226 Difference]: Without dead ends: 230 [2021-11-12 22:22:54,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:22:54,306 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 2 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 337.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.39ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 390.66ms IncrementalHoareTripleChecker+Time [2021-11-12 22:22:54,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1323 Invalid, 141 Unknown, 0 Unchecked, 9.39ms Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 390.66ms Time] [2021-11-12 22:22:54,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-11-12 22:22:54,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2021-11-12 22:22:54,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 141 states have (on average 1.198581560283688) internal successors, (169), 143 states have internal predecessors, (169), 65 states have call successors, (65), 21 states have call predecessors, (65), 23 states have return successors, (66), 65 states have call predecessors, (66), 64 states have call successors, (66) [2021-11-12 22:22:54,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 300 transitions. [2021-11-12 22:22:54,339 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 300 transitions. Word has length 190 [2021-11-12 22:22:54,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:22:54,340 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 300 transitions. [2021-11-12 22:22:54,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-12 22:22:54,340 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 300 transitions. [2021-11-12 22:22:54,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-12 22:22:54,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:22:54,344 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:54,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:22:54,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:22:54,548 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:22:54,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:22:54,549 INFO L85 PathProgramCache]: Analyzing trace with hash 10564960, now seen corresponding path program 1 times [2021-11-12 22:22:54,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:22:54,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983277768] [2021-11-12 22:22:54,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:22:54,552 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:22:54,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:22:54,553 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:22:54,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:22:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:22:58,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 1956 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:22:58,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:22:59,326 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-11-12 22:22:59,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:23:00,013 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-11-12 22:23:00,013 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:23:00,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983277768] [2021-11-12 22:23:00,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983277768] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:23:00,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:23:00,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 22:23:00,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710374873] [2021-11-12 22:23:00,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:23:00,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:23:00,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:23:00,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:23:00,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:23:00,016 INFO L87 Difference]: Start difference. First operand 230 states and 300 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-12 22:23:00,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:23:00,197 INFO L93 Difference]: Finished difference Result 447 states and 585 transitions. [2021-11-12 22:23:00,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:23:00,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 195 [2021-11-12 22:23:00,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:23:00,203 INFO L225 Difference]: With dead ends: 447 [2021-11-12 22:23:00,203 INFO L226 Difference]: Without dead ends: 237 [2021-11-12 22:23:00,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:23:00,205 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 36 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 136.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.86ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 159.90ms IncrementalHoareTripleChecker+Time [2021-11-12 22:23:00,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 799 Invalid, 28 Unknown, 0 Unchecked, 3.86ms Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 159.90ms Time] [2021-11-12 22:23:00,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-12 22:23:00,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2021-11-12 22:23:00,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 146 states have (on average 1.1986301369863013) internal successors, (175), 149 states have internal predecessors, (175), 66 states have call successors, (66), 21 states have call predecessors, (66), 24 states have return successors, (69), 66 states have call predecessors, (69), 65 states have call successors, (69) [2021-11-12 22:23:00,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 310 transitions. [2021-11-12 22:23:00,223 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 310 transitions. Word has length 195 [2021-11-12 22:23:00,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:23:00,224 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 310 transitions. [2021-11-12 22:23:00,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-12 22:23:00,224 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 310 transitions. [2021-11-12 22:23:00,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-12 22:23:00,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:23:00,228 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:23:00,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:23:00,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:23:00,444 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:23:00,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:23:00,445 INFO L85 PathProgramCache]: Analyzing trace with hash 11341472, now seen corresponding path program 1 times [2021-11-12 22:23:00,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:23:00,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502652133] [2021-11-12 22:23:00,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:23:00,448 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:23:00,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:23:00,449 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:23:00,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:23:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:23:04,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 1962 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 22:23:04,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:23:04,817 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 16 treesize of output 12 [2021-11-12 22:23:05,862 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-11-12 22:23:05,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:23:06,671 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 30 treesize of output 26 [2021-11-12 22:23:06,981 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-11-12 22:23:06,981 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:23:06,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502652133] [2021-11-12 22:23:06,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502652133] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:23:06,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:23:06,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 15 [2021-11-12 22:23:06,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559379990] [2021-11-12 22:23:06,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:23:06,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 22:23:06,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:23:06,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 22:23:06,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:23:06,983 INFO L87 Difference]: Start difference. First operand 237 states and 310 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-12 22:23:09,172 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:23:10,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:23:10,442 INFO L93 Difference]: Finished difference Result 466 states and 606 transitions. [2021-11-12 22:23:10,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 22:23:10,443 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 195 [2021-11-12 22:23:10,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:23:10,446 INFO L225 Difference]: With dead ends: 466 [2021-11-12 22:23:10,446 INFO L226 Difference]: Without dead ends: 241 [2021-11-12 22:23:10,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:23:10,448 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 38 mSDsluCounter, 2004 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3157.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.91ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 148 IncrementalHoareTripleChecker+Unchecked, 3354.15ms IncrementalHoareTripleChecker+Time [2021-11-12 22:23:10,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 2293 Invalid, 256 Unknown, 0 Unchecked, 8.91ms Time], IncrementalHoareTripleChecker [14 Valid, 93 Invalid, 1 Unknown, 148 Unchecked, 3354.15ms Time] [2021-11-12 22:23:10,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-12 22:23:10,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2021-11-12 22:23:10,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 150 states have (on average 1.1933333333333334) internal successors, (179), 152 states have internal predecessors, (179), 66 states have call successors, (66), 22 states have call predecessors, (66), 24 states have return successors, (69), 66 states have call predecessors, (69), 65 states have call successors, (69) [2021-11-12 22:23:10,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 314 transitions. [2021-11-12 22:23:10,464 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 314 transitions. Word has length 195 [2021-11-12 22:23:10,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:23:10,465 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 314 transitions. [2021-11-12 22:23:10,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-12 22:23:10,465 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 314 transitions. [2021-11-12 22:23:10,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-12 22:23:10,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:23:10,468 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:23:10,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:23:10,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:23:10,692 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:23:10,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:23:10,693 INFO L85 PathProgramCache]: Analyzing trace with hash -145875486, now seen corresponding path program 1 times [2021-11-12 22:23:10,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:23:10,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130895961] [2021-11-12 22:23:10,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:23:10,697 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:23:10,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:23:10,699 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:23:10,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:23:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:23:14,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 1976 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 22:23:14,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:23:14,987 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 16 treesize of output 12 [2021-11-12 22:23:16,041 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-11-12 22:23:16,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:23:17,009 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 30 treesize of output 26 [2021-11-12 22:23:17,336 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2021-11-12 22:23:17,336 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:23:17,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130895961] [2021-11-12 22:23:17,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130895961] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:23:17,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:23:17,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 17 [2021-11-12 22:23:17,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624834543] [2021-11-12 22:23:17,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:23:17,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:23:17,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:23:17,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:23:17,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-12 22:23:17,339 INFO L87 Difference]: Start difference. First operand 241 states and 314 transitions. Second operand has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) [2021-11-12 22:23:19,596 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 22:23:21,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:23:21,173 INFO L93 Difference]: Finished difference Result 467 states and 607 transitions. [2021-11-12 22:23:21,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 22:23:21,174 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) Word has length 201 [2021-11-12 22:23:21,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:23:21,177 INFO L225 Difference]: With dead ends: 467 [2021-11-12 22:23:21,177 INFO L226 Difference]: Without dead ends: 244 [2021-11-12 22:23:21,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-11-12 22:23:21,179 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 36 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3567.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.77ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 220 IncrementalHoareTripleChecker+Unchecked, 3709.85ms IncrementalHoareTripleChecker+Time [2021-11-12 22:23:21,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 2299 Invalid, 327 Unknown, 0 Unchecked, 6.77ms Time], IncrementalHoareTripleChecker [14 Valid, 92 Invalid, 1 Unknown, 220 Unchecked, 3709.85ms Time] [2021-11-12 22:23:21,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-12 22:23:21,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-11-12 22:23:21,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 152 states have (on average 1.1907894736842106) internal successors, (181), 154 states have internal predecessors, (181), 67 states have call successors, (67), 23 states have call predecessors, (67), 24 states have return successors, (70), 66 states have call predecessors, (70), 66 states have call successors, (70) [2021-11-12 22:23:21,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 318 transitions. [2021-11-12 22:23:21,195 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 318 transitions. Word has length 201 [2021-11-12 22:23:21,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:23:21,196 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 318 transitions. [2021-11-12 22:23:21,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) [2021-11-12 22:23:21,196 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 318 transitions. [2021-11-12 22:23:21,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-12 22:23:21,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:23:21,200 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:23:21,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:23:21,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:23:21,416 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:23:21,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:23:21,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1621013711, now seen corresponding path program 1 times [2021-11-12 22:23:21,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:23:21,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490043459] [2021-11-12 22:23:21,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:23:21,421 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:23:21,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:23:21,423 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:23:21,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:23:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:23:25,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 1993 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:23:25,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:23:25,980 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-12 22:23:25,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:23:26,652 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 26 proven. 15 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2021-11-12 22:23:26,653 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:23:26,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490043459] [2021-11-12 22:23:26,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490043459] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:23:26,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:23:26,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-12 22:23:26,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801499333] [2021-11-12 22:23:26,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:23:26,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:23:26,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:23:26,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:23:26,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:23:26,655 INFO L87 Difference]: Start difference. First operand 244 states and 318 transitions. Second operand has 6 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-12 22:23:27,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:23:27,032 INFO L93 Difference]: Finished difference Result 406 states and 536 transitions. [2021-11-12 22:23:27,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:23:27,033 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 206 [2021-11-12 22:23:27,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:23:27,035 INFO L225 Difference]: With dead ends: 406 [2021-11-12 22:23:27,036 INFO L226 Difference]: Without dead ends: 242 [2021-11-12 22:23:27,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:23:27,037 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 2 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 281.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.08ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 338.61ms IncrementalHoareTripleChecker+Time [2021-11-12 22:23:27,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1323 Invalid, 141 Unknown, 0 Unchecked, 3.08ms Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 338.61ms Time] [2021-11-12 22:23:27,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-12 22:23:27,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 238. [2021-11-12 22:23:27,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 148 states have (on average 1.1824324324324325) internal successors, (175), 149 states have internal predecessors, (175), 67 states have call successors, (67), 23 states have call predecessors, (67), 22 states have return successors, (68), 65 states have call predecessors, (68), 66 states have call successors, (68) [2021-11-12 22:23:27,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 310 transitions. [2021-11-12 22:23:27,052 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 310 transitions. Word has length 206 [2021-11-12 22:23:27,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:23:27,053 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 310 transitions. [2021-11-12 22:23:27,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-12 22:23:27,053 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 310 transitions. [2021-11-12 22:23:27,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-12 22:23:27,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:23:27,057 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:23:27,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:23:27,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:23:27,280 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:23:27,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:23:27,281 INFO L85 PathProgramCache]: Analyzing trace with hash 500291049, now seen corresponding path program 1 times [2021-11-12 22:23:27,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:23:27,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486750454] [2021-11-12 22:23:27,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:23:27,284 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:23:27,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:23:27,284 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:23:27,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:23:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:23:31,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 2040 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:23:31,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:23:31,967 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-11-12 22:23:31,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:23:32,494 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 30 proven. 15 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2021-11-12 22:23:32,494 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:23:32,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486750454] [2021-11-12 22:23:32,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486750454] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:23:32,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:23:32,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2021-11-12 22:23:32,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29095449] [2021-11-12 22:23:32,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:23:32,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 22:23:32,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:23:32,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 22:23:32,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:23:32,497 INFO L87 Difference]: Start difference. First operand 238 states and 310 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-12 22:23:32,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:23:32,914 INFO L93 Difference]: Finished difference Result 397 states and 525 transitions. [2021-11-12 22:23:32,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:23:32,915 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 211 [2021-11-12 22:23:32,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:23:32,918 INFO L225 Difference]: With dead ends: 397 [2021-11-12 22:23:32,918 INFO L226 Difference]: Without dead ends: 244 [2021-11-12 22:23:32,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:23:32,920 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 2 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 322.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.86ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 374.64ms IncrementalHoareTripleChecker+Time [2021-11-12 22:23:32,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1587 Invalid, 169 Unknown, 0 Unchecked, 3.86ms Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 374.64ms Time] [2021-11-12 22:23:32,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-12 22:23:32,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 241. [2021-11-12 22:23:32,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 150 states have (on average 1.18) internal successors, (177), 152 states have internal predecessors, (177), 67 states have call successors, (67), 23 states have call predecessors, (67), 23 states have return successors, (71), 65 states have call predecessors, (71), 66 states have call successors, (71) [2021-11-12 22:23:32,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 315 transitions. [2021-11-12 22:23:32,935 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 315 transitions. Word has length 211 [2021-11-12 22:23:32,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:23:32,936 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 315 transitions. [2021-11-12 22:23:32,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-12 22:23:32,937 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 315 transitions. [2021-11-12 22:23:32,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-12 22:23:32,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:23:32,939 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:23:33,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:23:33,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:23:33,160 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:23:33,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:23:33,161 INFO L85 PathProgramCache]: Analyzing trace with hash 2127170151, now seen corresponding path program 2 times [2021-11-12 22:23:33,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:23:33,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468046503] [2021-11-12 22:23:33,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:23:33,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:23:33,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:23:33,164 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:23:33,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:23:36,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-12 22:23:36,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:23:36,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 22:23:36,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:23:36,984 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2021-11-12 22:23:36,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:23:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2021-11-12 22:23:37,478 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:23:37,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468046503] [2021-11-12 22:23:37,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468046503] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:23:37,478 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:23:37,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-12 22:23:37,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966459113] [2021-11-12 22:23:37,479 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:23:37,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 22:23:37,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:23:37,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 22:23:37,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:23:37,481 INFO L87 Difference]: Start difference. First operand 241 states and 315 transitions. Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2021-11-12 22:23:37,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:23:37,602 INFO L93 Difference]: Finished difference Result 249 states and 322 transitions. [2021-11-12 22:23:37,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:23:37,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 217 [2021-11-12 22:23:37,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:23:37,605 INFO L225 Difference]: With dead ends: 249 [2021-11-12 22:23:37,605 INFO L226 Difference]: Without dead ends: 247 [2021-11-12 22:23:37,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:23:37,606 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 13 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.52ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 83.89ms IncrementalHoareTripleChecker+Time [2021-11-12 22:23:37,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 1713 Invalid, 37 Unknown, 0 Unchecked, 3.52ms Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 83.89ms Time] [2021-11-12 22:23:37,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-12 22:23:37,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 245. [2021-11-12 22:23:37,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 153 states have (on average 1.1764705882352942) internal successors, (180), 155 states have internal predecessors, (180), 67 states have call successors, (67), 24 states have call predecessors, (67), 24 states have return successors, (71), 65 states have call predecessors, (71), 66 states have call successors, (71) [2021-11-12 22:23:37,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 318 transitions. [2021-11-12 22:23:37,622 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 318 transitions. Word has length 217 [2021-11-12 22:23:37,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:23:37,623 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 318 transitions. [2021-11-12 22:23:37,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2021-11-12 22:23:37,623 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 318 transitions. [2021-11-12 22:23:37,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-12 22:23:37,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:23:37,626 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:23:37,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:23:37,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:23:37,840 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:23:37,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:23:37,841 INFO L85 PathProgramCache]: Analyzing trace with hash 533171121, now seen corresponding path program 1 times [2021-11-12 22:23:37,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:23:37,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060193836] [2021-11-12 22:23:37,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:23:37,846 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:23:37,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:23:37,847 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:23:37,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:23:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:23:42,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 2075 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 22:23:42,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:23:43,493 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-11-12 22:23:43,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:23:44,572 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2021-11-12 22:23:44,572 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:23:44,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060193836] [2021-11-12 22:23:44,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060193836] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:23:44,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:23:44,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2021-11-12 22:23:44,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250754938] [2021-11-12 22:23:44,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:23:44,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:23:44,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:23:44,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:23:44,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:23:44,574 INFO L87 Difference]: Start difference. First operand 245 states and 318 transitions. Second operand has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-12 22:23:46,764 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:23:48,772 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 22:23:50,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:23:50,144 INFO L93 Difference]: Finished difference Result 409 states and 541 transitions. [2021-11-12 22:23:50,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 22:23:50,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) Word has length 230 [2021-11-12 22:23:50,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:23:50,149 INFO L225 Difference]: With dead ends: 409 [2021-11-12 22:23:50,149 INFO L226 Difference]: Without dead ends: 247 [2021-11-12 22:23:50,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:23:50,151 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 7 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5090.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.49ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 5237.58ms IncrementalHoareTripleChecker+Time [2021-11-12 22:23:50,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1836 Invalid, 191 Unknown, 0 Unchecked, 4.49ms Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 2 Unknown, 119 Unchecked, 5237.58ms Time] [2021-11-12 22:23:50,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-12 22:23:50,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 244. [2021-11-12 22:23:50,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 153 states have (on average 1.1764705882352942) internal successors, (180), 154 states have internal predecessors, (180), 66 states have call successors, (66), 24 states have call predecessors, (66), 24 states have return successors, (70), 65 states have call predecessors, (70), 65 states have call successors, (70) [2021-11-12 22:23:50,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 316 transitions. [2021-11-12 22:23:50,166 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 316 transitions. Word has length 230 [2021-11-12 22:23:50,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:23:50,167 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 316 transitions. [2021-11-12 22:23:50,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-12 22:23:50,167 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 316 transitions. [2021-11-12 22:23:50,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-12 22:23:50,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:23:50,169 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:23:50,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:23:50,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:23:50,392 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:23:50,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:23:50,393 INFO L85 PathProgramCache]: Analyzing trace with hash 925847752, now seen corresponding path program 2 times [2021-11-12 22:23:50,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:23:50,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285190086] [2021-11-12 22:23:50,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:23:50,396 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:23:50,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:23:50,397 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:23:50,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6671ef0-f7b5-42b1-aaea-bf1d5bebd7bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process