./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH --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 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:38:38,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:38:38,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:38:38,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:38:38,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:38:38,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:38:38,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:38:38,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:38:38,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:38:38,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:38:38,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:38:38,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:38:38,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:38:38,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:38:38,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:38:38,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:38:38,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:38:38,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:38:38,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:38:38,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:38:38,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:38:38,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:38:38,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:38:38,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:38:38,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:38:38,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:38:38,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:38:38,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:38:38,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:38:38,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:38:38,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:38:38,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:38:38,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:38:38,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:38:38,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:38:38,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:38:38,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:38:38,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:38:38,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:38:38,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:38:38,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:38:38,121 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 04:38:38,146 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:38:38,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:38:38,148 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:38:38,148 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:38:38,149 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:38:38,149 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:38:38,149 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:38:38,150 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:38:38,150 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:38:38,150 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:38:38,151 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:38:38,151 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:38:38,151 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:38:38,152 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:38:38,152 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:38:38,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:38:38,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:38:38,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:38:38,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:38:38,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:38:38,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:38:38,154 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:38:38,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:38:38,155 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:38:38,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:38:38,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:38:38,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:38:38,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:38:38,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:38:38,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:38:38,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:38:38,157 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:38:38,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:38:38,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:38:38,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:38:38,157 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:38:38,158 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_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 [2021-11-03 04:38:38,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:38:38,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:38:38,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:38:38,487 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:38:38,488 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:38:38,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i [2021-11-03 04:38:38,552 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/data/ddc12eacf/cbb63bbafad84c528716c502e92cfb10/FLAGfebbe97fb [2021-11-03 04:38:39,337 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:38:39,337 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i [2021-11-03 04:38:39,379 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/data/ddc12eacf/cbb63bbafad84c528716c502e92cfb10/FLAGfebbe97fb [2021-11-03 04:38:39,870 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/data/ddc12eacf/cbb63bbafad84c528716c502e92cfb10 [2021-11-03 04:38:39,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:38:39,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:38:39,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:38:39,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:38:39,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:38:39,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:38:39" (1/1) ... [2021-11-03 04:38:39,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@522de931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:39, skipping insertion in model container [2021-11-03 04:38:39,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:38:39" (1/1) ... [2021-11-03 04:38:39,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:38:39,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:38:40,354 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_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4497,4510] [2021-11-03 04:38:40,363 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_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4557,4570] [2021-11-03 04:38:40,385 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:38:40,390 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:38:41,191 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:38:41,285 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:41,286 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:41,286 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:41,287 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:41,288 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:41,298 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:41,298 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:41,300 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:41,300 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:41,302 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:41,302 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:41,303 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:41,303 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:41,686 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:38:41,687 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:38:41,688 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:38:41,696 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:38:41,698 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:38:41,699 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:38:41,699 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:38:41,701 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:38:41,704 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:38:41,704 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:38:41,825 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:41,832 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:41,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:38:41,905 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) [2021-11-03 04:38:41,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4ded61f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:41, skipping insertion in model container [2021-11-03 04:38:41,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:38:41,907 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:38:41,909 INFO L168 Benchmark]: Toolchain (without parser) took 2033.08 ms. Allocated memory is still 117.4 MB. Free memory was 72.2 MB in the beginning and 54.5 MB in the end (delta: 17.7 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2021-11-03 04:38:41,910 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 117.4 MB. Free memory was 96.4 MB in the beginning and 96.2 MB in the end (delta: 151.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:38:41,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2030.55 ms. Allocated memory is still 117.4 MB. Free memory was 72.1 MB in the beginning and 54.5 MB in the end (delta: 17.5 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2021-11-03 04:38:41,912 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 117.4 MB. Free memory was 96.4 MB in the beginning and 96.2 MB in the end (delta: 151.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2030.55 ms. Allocated memory is still 117.4 MB. Free memory was 72.1 MB in the beginning and 54.5 MB in the end (delta: 17.5 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2886]: 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_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH --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 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:38:44,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:38:44,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:38:44,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:38:44,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:38:44,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:38:44,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:38:44,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:38:44,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:38:44,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:38:44,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:38:44,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:38:44,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:38:44,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:38:44,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:38:44,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:38:44,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:38:44,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:38:44,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:38:44,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:38:44,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:38:44,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:38:44,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:38:44,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:38:44,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:38:44,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:38:44,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:38:44,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:38:44,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:38:44,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:38:44,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:38:44,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:38:44,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:38:44,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:38:44,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:38:44,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:38:44,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:38:44,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:38:44,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:38:44,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:38:44,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:38:44,161 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 04:38:44,203 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:38:44,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:38:44,205 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:38:44,205 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:38:44,205 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:38:44,205 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:38:44,205 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:38:44,206 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:38:44,206 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:38:44,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:38:44,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:38:44,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:38:44,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:38:44,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:38:44,209 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:38:44,209 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:38:44,209 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:38:44,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:38:44,210 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:38:44,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:38:44,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:38:44,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:38:44,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:38:44,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:38:44,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:38:44,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:38:44,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:38:44,212 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:38:44,212 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:38:44,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:38:44,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:38:44,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:38:44,213 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_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 [2021-11-03 04:38:44,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:38:44,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:38:44,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:38:44,605 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:38:44,607 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:38:44,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i [2021-11-03 04:38:44,691 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/data/934c8d88b/9b34146ff96b4e43ae47b3ce92268de0/FLAG157dc609e [2021-11-03 04:38:45,521 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:38:45,522 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i [2021-11-03 04:38:45,572 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/data/934c8d88b/9b34146ff96b4e43ae47b3ce92268de0/FLAG157dc609e [2021-11-03 04:38:45,638 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/data/934c8d88b/9b34146ff96b4e43ae47b3ce92268de0 [2021-11-03 04:38:45,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:38:45,641 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:38:45,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:38:45,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:38:45,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:38:45,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:38:45" (1/1) ... [2021-11-03 04:38:45,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79320b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:45, skipping insertion in model container [2021-11-03 04:38:45,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:38:45" (1/1) ... [2021-11-03 04:38:45,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:38:45,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:38:46,067 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_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4497,4510] [2021-11-03 04:38:46,073 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_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4557,4570] [2021-11-03 04:38:46,101 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:38:46,114 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:38:47,254 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:38:47,358 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:47,359 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:47,359 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:47,360 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:47,361 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:47,385 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:47,386 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:47,388 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:47,388 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:47,389 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:47,390 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:47,391 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:47,391 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:47,838 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:38:47,839 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:38:47,840 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:38:47,841 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:38:47,843 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:38:47,844 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:38:47,845 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:38:47,846 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:38:47,847 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:38:47,847 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:38:47,973 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:47,981 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:38:48,122 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:38:48,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:38:48,193 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_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4497,4510] [2021-11-03 04:38:48,194 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_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4557,4570] [2021-11-03 04:38:48,196 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:38:48,196 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:38:48,255 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:38:48,293 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,296 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,296 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,297 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,297 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,303 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,303 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,304 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,305 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,306 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,306 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,307 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,307 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,356 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:38:48,357 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:38:48,358 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:38:48,358 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:38:48,367 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:38:48,368 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:38:48,369 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:38:48,369 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:38:48,369 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:38:48,370 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:38:48,397 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,403 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:38:48,476 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:38:48,513 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_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4497,4510] [2021-11-03 04:38:48,514 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_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4557,4570] [2021-11-03 04:38:48,515 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:38:48,516 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:38:48,562 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:38:48,585 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,585 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,585 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,586 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,586 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,602 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,602 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,603 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,603 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,604 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,605 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,605 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,606 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,646 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:38:48,669 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:38:48,670 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:38:48,671 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:38:48,672 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:38:48,672 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:38:48,672 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:38:48,673 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:38:48,673 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:38:48,674 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:38:48,709 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,729 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:38:48,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:38:49,136 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:38:49,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:49 WrapperNode [2021-11-03 04:38:49,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:38:49,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:38:49,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:38:49,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:38:49,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:49" (1/1) ... [2021-11-03 04:38:49,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:49" (1/1) ... [2021-11-03 04:38:49,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:38:49,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:38:49,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:38:49,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:38:49,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:49" (1/1) ... [2021-11-03 04:38:49,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:49" (1/1) ... [2021-11-03 04:38:49,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:49" (1/1) ... [2021-11-03 04:38:49,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:49" (1/1) ... [2021-11-03 04:38:49,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:49" (1/1) ... [2021-11-03 04:38:49,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:49" (1/1) ... [2021-11-03 04:38:49,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:49" (1/1) ... [2021-11-03 04:38:49,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:38:49,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:38:49,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:38:49,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:38:49,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:49" (1/1) ... [2021-11-03 04:38:49,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:38:49,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:38:49,538 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:38:49,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:38:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:38:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:38:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 04:38:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 04:38:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:38:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:38:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:38:49,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:38:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:38:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 04:38:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:38:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-03 04:38:49,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:38:49,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 04:38:49,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 04:39:02,477 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:39:02,478 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-03 04:39:02,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:39:02 BoogieIcfgContainer [2021-11-03 04:39:02,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:39:02,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:39:02,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:39:02,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:39:02,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:38:45" (1/3) ... [2021-11-03 04:39:02,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7584ee48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:39:02, skipping insertion in model container [2021-11-03 04:39:02,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:49" (2/3) ... [2021-11-03 04:39:02,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7584ee48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:39:02, skipping insertion in model container [2021-11-03 04:39:02,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:39:02" (3/3) ... [2021-11-03 04:39:02,487 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_clean_up_harness.i [2021-11-03 04:39:02,492 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:39:02,493 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:39:02,538 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:39:02,543 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 [2021-11-03 04:39:02,543 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:39:02,558 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 81 states have (on average 1.4320987654320987) internal successors, (116), 82 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:02,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-03 04:39:02,564 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:02,565 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:02,565 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:39:02,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:02,571 INFO L85 PathProgramCache]: Analyzing trace with hash -68563336, now seen corresponding path program 1 times [2021-11-03 04:39:02,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:02,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625727134] [2021-11-03 04:39:02,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:02,590 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:02,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:02,593 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:02,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:39:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:06,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:39:06,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:06,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:06,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:06,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:06,766 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:06,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625727134] [2021-11-03 04:39:06,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625727134] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:06,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:06,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:39:06,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820328147] [2021-11-03 04:39:06,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:39:06,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:06,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:39:06,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:39:06,792 INFO L87 Difference]: Start difference. First operand has 83 states, 81 states have (on average 1.4320987654320987) internal successors, (116), 82 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:06,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:06,815 INFO L93 Difference]: Finished difference Result 162 states and 227 transitions. [2021-11-03 04:39:06,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:39:06,817 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-03 04:39:06,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:06,825 INFO L225 Difference]: With dead ends: 162 [2021-11-03 04:39:06,825 INFO L226 Difference]: Without dead ends: 78 [2021-11-03 04:39:06,828 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:39:06,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-03 04:39:06,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-11-03 04:39:06,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.2857142857142858) internal successors, (99), 77 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:06,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2021-11-03 04:39:06,861 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 31 [2021-11-03 04:39:06,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:06,861 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2021-11-03 04:39:06,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:06,862 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2021-11-03 04:39:06,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 04:39:06,864 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:06,864 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:06,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:07,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:07,072 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:39:07,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:07,072 INFO L85 PathProgramCache]: Analyzing trace with hash 814292389, now seen corresponding path program 1 times [2021-11-03 04:39:07,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:07,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472755592] [2021-11-03 04:39:07,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:07,079 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:07,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:07,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:07,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:39:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:10,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 1519 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:39:10,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:10,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:10,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:10,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:10,994 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:10,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472755592] [2021-11-03 04:39:10,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1472755592] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:10,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:10,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:39:10,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440013119] [2021-11-03 04:39:10,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:39:10,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:10,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:39:10,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:39:10,997 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:11,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:11,055 INFO L93 Difference]: Finished difference Result 143 states and 183 transitions. [2021-11-03 04:39:11,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:39:11,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-03 04:39:11,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:11,068 INFO L225 Difference]: With dead ends: 143 [2021-11-03 04:39:11,068 INFO L226 Difference]: Without dead ends: 79 [2021-11-03 04:39:11,069 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:39:11,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-03 04:39:11,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-11-03 04:39:11,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.2820512820512822) internal successors, (100), 78 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:11,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 100 transitions. [2021-11-03 04:39:11,078 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 100 transitions. Word has length 34 [2021-11-03 04:39:11,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:11,079 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 100 transitions. [2021-11-03 04:39:11,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:11,079 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 100 transitions. [2021-11-03 04:39:11,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 04:39:11,081 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:11,081 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:11,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:11,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:11,284 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:39:11,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:11,284 INFO L85 PathProgramCache]: Analyzing trace with hash -571911005, now seen corresponding path program 1 times [2021-11-03 04:39:11,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:11,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726181047] [2021-11-03 04:39:11,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:11,291 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:11,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:11,292 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:11,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:39:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:15,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-03 04:39:15,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:16,165 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-03 04:39:16,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 203 treesize of output 59 [2021-11-03 04:39:16,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:16,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:17,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:17,472 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:17,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726181047] [2021-11-03 04:39:17,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726181047] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:17,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:17,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-03 04:39:17,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697575165] [2021-11-03 04:39:17,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 04:39:17,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:17,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 04:39:17,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:39:17,476 INFO L87 Difference]: Start difference. First operand 79 states and 100 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:35,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:35,787 INFO L93 Difference]: Finished difference Result 195 states and 250 transitions. [2021-11-03 04:39:35,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:39:35,789 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-03 04:39:35,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:35,790 INFO L225 Difference]: With dead ends: 195 [2021-11-03 04:39:35,791 INFO L226 Difference]: Without dead ends: 131 [2021-11-03 04:39:35,791 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:39:35,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-03 04:39:35,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 75. [2021-11-03 04:39:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.2837837837837838) internal successors, (95), 74 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:35,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 95 transitions. [2021-11-03 04:39:35,801 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 95 transitions. Word has length 34 [2021-11-03 04:39:35,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:35,802 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 95 transitions. [2021-11-03 04:39:35,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:35,802 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 95 transitions. [2021-11-03 04:39:35,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-03 04:39:35,804 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:35,804 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:35,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-03 04:39:36,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:36,020 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:39:36,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:36,020 INFO L85 PathProgramCache]: Analyzing trace with hash 700165005, now seen corresponding path program 1 times [2021-11-03 04:39:36,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:36,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888628794] [2021-11-03 04:39:36,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:36,024 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:36,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:36,025 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:36,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:39:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:39,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 1531 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:39:39,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:39,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:39,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:39,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:39,938 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:39,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888628794] [2021-11-03 04:39:39,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888628794] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:39,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:39,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:39:39,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900625535] [2021-11-03 04:39:39,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:39:39,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:39,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:39:39,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:39:39,941 INFO L87 Difference]: Start difference. First operand 75 states and 95 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:40,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:40,153 INFO L93 Difference]: Finished difference Result 146 states and 184 transitions. [2021-11-03 04:39:40,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:39:40,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-03 04:39:40,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:40,155 INFO L225 Difference]: With dead ends: 146 [2021-11-03 04:39:40,155 INFO L226 Difference]: Without dead ends: 99 [2021-11-03 04:39:40,156 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:39:40,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-03 04:39:40,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 75. [2021-11-03 04:39:40,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.2702702702702702) internal successors, (94), 74 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:40,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 94 transitions. [2021-11-03 04:39:40,167 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 94 transitions. Word has length 37 [2021-11-03 04:39:40,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:40,168 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 94 transitions. [2021-11-03 04:39:40,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:40,168 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 94 transitions. [2021-11-03 04:39:40,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-03 04:39:40,170 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:40,170 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:40,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-03 04:39:40,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:40,387 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:39:40,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:40,387 INFO L85 PathProgramCache]: Analyzing trace with hash -498506455, now seen corresponding path program 1 times [2021-11-03 04:39:40,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:40,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283306221] [2021-11-03 04:39:40,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:40,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:40,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:40,393 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:40,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:39:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:44,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 1590 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:39:44,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:44,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:44,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:44,592 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:44,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283306221] [2021-11-03 04:39:44,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283306221] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:44,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:44,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:39:44,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141770917] [2021-11-03 04:39:44,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:39:44,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:44,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:39:44,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:39:44,595 INFO L87 Difference]: Start difference. First operand 75 states and 94 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:44,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:44,684 INFO L93 Difference]: Finished difference Result 196 states and 250 transitions. [2021-11-03 04:39:44,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:39:44,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-03 04:39:44,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:44,686 INFO L225 Difference]: With dead ends: 196 [2021-11-03 04:39:44,686 INFO L226 Difference]: Without dead ends: 155 [2021-11-03 04:39:44,687 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:39:44,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-03 04:39:44,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 83. [2021-11-03 04:39:44,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.2682926829268293) internal successors, (104), 82 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:44,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 104 transitions. [2021-11-03 04:39:44,696 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 104 transitions. Word has length 45 [2021-11-03 04:39:44,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:44,696 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 104 transitions. [2021-11-03 04:39:44,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:44,697 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 104 transitions. [2021-11-03 04:39:44,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-03 04:39:44,699 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:44,699 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:44,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-03 04:39:44,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:44,919 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:39:44,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:44,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1495770045, now seen corresponding path program 1 times [2021-11-03 04:39:44,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:44,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697903258] [2021-11-03 04:39:44,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:44,923 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:44,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:44,924 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:44,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:39:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:48,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:39:48,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:48,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:48,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:49,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:49,058 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:49,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697903258] [2021-11-03 04:39:49,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697903258] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:49,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:49,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:39:49,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547854269] [2021-11-03 04:39:49,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:39:49,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:49,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:39:49,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:39:49,060 INFO L87 Difference]: Start difference. First operand 83 states and 104 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:49,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:49,145 INFO L93 Difference]: Finished difference Result 147 states and 183 transitions. [2021-11-03 04:39:49,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:39:49,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-03 04:39:49,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:49,146 INFO L225 Difference]: With dead ends: 147 [2021-11-03 04:39:49,146 INFO L226 Difference]: Without dead ends: 119 [2021-11-03 04:39:49,147 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:39:49,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-03 04:39:49,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 85. [2021-11-03 04:39:49,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.2619047619047619) internal successors, (106), 84 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:49,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 106 transitions. [2021-11-03 04:39:49,165 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 106 transitions. Word has length 45 [2021-11-03 04:39:49,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:49,165 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 106 transitions. [2021-11-03 04:39:49,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:49,166 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 106 transitions. [2021-11-03 04:39:49,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-03 04:39:49,170 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:49,172 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:49,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:49,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:49,395 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:39:49,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:49,396 INFO L85 PathProgramCache]: Analyzing trace with hash -863573613, now seen corresponding path program 1 times [2021-11-03 04:39:49,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:49,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459465320] [2021-11-03 04:39:49,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:49,399 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:49,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:49,399 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:49,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:39:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:53,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:39:53,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:53,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:53,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:53,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:53,907 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:53,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459465320] [2021-11-03 04:39:53,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459465320] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:53,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:53,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:39:53,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079699822] [2021-11-03 04:39:53,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:39:53,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:53,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:39:53,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:39:53,909 INFO L87 Difference]: Start difference. First operand 85 states and 106 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:54,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:54,215 INFO L93 Difference]: Finished difference Result 114 states and 141 transitions. [2021-11-03 04:39:54,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:39:54,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-03 04:39:54,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:54,216 INFO L225 Difference]: With dead ends: 114 [2021-11-03 04:39:54,216 INFO L226 Difference]: Without dead ends: 85 [2021-11-03 04:39:54,217 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:39:54,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-03 04:39:54,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-11-03 04:39:54,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.25) internal successors, (105), 84 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:54,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 105 transitions. [2021-11-03 04:39:54,223 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 105 transitions. Word has length 47 [2021-11-03 04:39:54,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:54,223 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 105 transitions. [2021-11-03 04:39:54,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:54,224 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 105 transitions. [2021-11-03 04:39:54,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 04:39:54,225 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:54,225 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:54,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:54,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:54,426 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:39:54,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:54,426 INFO L85 PathProgramCache]: Analyzing trace with hash 633405459, now seen corresponding path program 1 times [2021-11-03 04:39:54,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:54,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90175344] [2021-11-03 04:39:54,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:54,429 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:54,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:54,430 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:54,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:39:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:58,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:39:58,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:58,646 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:58,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:59,023 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:59,023 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:59,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90175344] [2021-11-03 04:39:59,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90175344] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:39:59,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1442719359] [2021-11-03 04:39:59,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:59,024 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:39:59,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:39:59,040 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:39:59,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-03 04:40:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:02,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:40:02,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:02,912 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:02,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:03,089 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:03,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1442719359] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:40:03,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539333735] [2021-11-03 04:40:03,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:03,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:40:03,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:40:03,091 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:40:03,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-03 04:40:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:04,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:40:04,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:04,648 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 04:40:04,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:04,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 04:40:04,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539333735] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:04,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-03 04:40:04,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5, 5, 5] total 10 [2021-11-03 04:40:04,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717472402] [2021-11-03 04:40:04,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:40:04,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:04,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:40:04,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:40:04,811 INFO L87 Difference]: Start difference. First operand 85 states and 105 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:04,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:04,842 INFO L93 Difference]: Finished difference Result 102 states and 126 transitions. [2021-11-03 04:40:04,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:40:04,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-03 04:40:04,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:04,844 INFO L225 Difference]: With dead ends: 102 [2021-11-03 04:40:04,844 INFO L226 Difference]: Without dead ends: 87 [2021-11-03 04:40:04,844 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:40:04,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-03 04:40:04,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-11-03 04:40:04,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.244186046511628) internal successors, (107), 86 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:04,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2021-11-03 04:40:04,850 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 107 transitions. Word has length 51 [2021-11-03 04:40:04,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:04,851 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 107 transitions. [2021-11-03 04:40:04,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:04,855 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 107 transitions. [2021-11-03 04:40:04,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 04:40:04,861 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:04,861 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 04:40:04,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:05,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:05,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:05,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:40:05,480 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:40:05,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:05,480 INFO L85 PathProgramCache]: Analyzing trace with hash -623274701, now seen corresponding path program 1 times [2021-11-03 04:40:05,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:05,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938300039] [2021-11-03 04:40:05,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:05,483 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:05,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:05,484 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:05,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:40:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:09,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 1610 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:40:09,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:40:09,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:10,101 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:40:10,102 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:10,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938300039] [2021-11-03 04:40:10,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938300039] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:40:10,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1922863371] [2021-11-03 04:40:10,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:10,102 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:40:10,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:40:10,103 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:40:10,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-03 04:40:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:13,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 1610 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:40:13,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:14,061 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:40:14,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:14,247 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:40:14,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1922863371] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:40:14,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282909693] [2021-11-03 04:40:14,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:14,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:40:14,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:40:14,249 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:40:14,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-03 04:40:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:15,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 1610 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-03 04:40:15,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:16,562 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 12 treesize of output 8 [2021-11-03 04:40:16,679 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-03 04:40:16,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-03 04:40:16,961 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 15 treesize of output 7 [2021-11-03 04:40:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 04:40:17,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:21,679 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 85 treesize of output 81 [2021-11-03 04:40:22,301 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 04:40:22,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282909693] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:40:22,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:40:22,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 9, 8] total 20 [2021-11-03 04:40:22,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998184839] [2021-11-03 04:40:22,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-03 04:40:22,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:22,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-03 04:40:22,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-11-03 04:40:22,303 INFO L87 Difference]: Start difference. First operand 87 states and 107 transitions. Second operand has 20 states, 20 states have (on average 6.35) internal successors, (127), 20 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:36,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:36,671 INFO L93 Difference]: Finished difference Result 380 states and 470 transitions. [2021-11-03 04:40:36,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-03 04:40:36,672 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.35) internal successors, (127), 20 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-03 04:40:36,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:36,675 INFO L225 Difference]: With dead ends: 380 [2021-11-03 04:40:36,675 INFO L226 Difference]: Without dead ends: 333 [2021-11-03 04:40:36,677 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=388, Invalid=1334, Unknown=0, NotChecked=0, Total=1722 [2021-11-03 04:40:36,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-03 04:40:36,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 111. [2021-11-03 04:40:36,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.2545454545454546) internal successors, (138), 110 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:36,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 138 transitions. [2021-11-03 04:40:36,687 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 138 transitions. Word has length 53 [2021-11-03 04:40:36,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:36,687 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 138 transitions. [2021-11-03 04:40:36,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.35) internal successors, (127), 20 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:36,687 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 138 transitions. [2021-11-03 04:40:36,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 04:40:36,688 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:36,688 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:40:36,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:36,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:37,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-03 04:40:37,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:40:37,289 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:40:37,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:37,290 INFO L85 PathProgramCache]: Analyzing trace with hash -227754409, now seen corresponding path program 1 times [2021-11-03 04:40:37,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:37,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116660961] [2021-11-03 04:40:37,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:37,293 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:37,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:37,295 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:37,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:40:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:41,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 1676 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:40:41,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:41,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:40:41,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:42,283 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:40:42,283 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:42,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116660961] [2021-11-03 04:40:42,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116660961] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:40:42,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [218616372] [2021-11-03 04:40:42,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:42,284 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:40:42,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:40:42,285 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:40:42,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-03 04:40:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:46,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 1676 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:40:46,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:46,516 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:40:46,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:46,642 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 04:40:46,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [218616372] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:40:46,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759181970] [2021-11-03 04:40:46,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:46,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:40:46,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:40:46,644 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:40:46,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-03 04:40:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:48,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 1676 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-03 04:40:48,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:49,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-03 04:40:49,874 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 15 treesize of output 7 [2021-11-03 04:40:49,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:49,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:50,339 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 39 treesize of output 33 [2021-11-03 04:40:51,071 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:51,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759181970] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:40:51,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:40:51,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 10, 9] total 22 [2021-11-03 04:40:51,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346939324] [2021-11-03 04:40:51,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-03 04:40:51,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:51,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-03 04:40:51,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2021-11-03 04:40:51,075 INFO L87 Difference]: Start difference. First operand 111 states and 138 transitions. Second operand has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:59,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:59,762 INFO L93 Difference]: Finished difference Result 142 states and 178 transitions. [2021-11-03 04:40:59,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:40:59,764 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-03 04:40:59,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:59,765 INFO L225 Difference]: With dead ends: 142 [2021-11-03 04:40:59,765 INFO L226 Difference]: Without dead ends: 115 [2021-11-03 04:40:59,766 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2021-11-03 04:40:59,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-03 04:40:59,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-11-03 04:40:59,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.2456140350877194) internal successors, (142), 114 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:59,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 142 transitions. [2021-11-03 04:40:59,776 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 142 transitions. Word has length 60 [2021-11-03 04:40:59,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:59,776 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 142 transitions. [2021-11-03 04:40:59,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:59,777 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 142 transitions. [2021-11-03 04:40:59,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 04:40:59,778 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:59,778 INFO L513 BasicCegarLoop]: trace histogram [6, 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] [2021-11-03 04:40:59,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-03 04:41:00,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-03 04:41:00,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 04:41:00,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:41:00,384 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:41:00,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:41:00,384 INFO L85 PathProgramCache]: Analyzing trace with hash -65244649, now seen corresponding path program 2 times [2021-11-03 04:41:00,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:41:00,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625394809] [2021-11-03 04:41:00,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:41:00,387 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:41:00,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:41:00,388 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:41:00,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 04:42:27,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-03 04:42:27,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:42:28,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 1662 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-03 04:42:28,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:42:28,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-11-03 04:42:28,922 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-03 04:42:28,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-11-03 04:42:29,178 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 11 treesize of output 7 [2021-11-03 04:42:29,207 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 11 treesize of output 7 [2021-11-03 04:42:29,356 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 04:42:29,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-03 04:42:30,106 INFO L354 Elim1Store]: treesize reduction 1506, result has 0.5 percent of original size [2021-11-03 04:42:30,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 203 treesize of output 114 [2021-11-03 04:42:30,384 INFO L354 Elim1Store]: treesize reduction 1506, result has 0.5 percent of original size [2021-11-03 04:42:30,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 111 treesize of output 22 [2021-11-03 04:42:31,092 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 04:42:31,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 13 [2021-11-03 04:42:31,742 INFO L354 Elim1Store]: treesize reduction 1506, result has 0.5 percent of original size [2021-11-03 04:42:31,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 203 treesize of output 114 [2021-11-03 04:42:32,013 INFO L354 Elim1Store]: treesize reduction 1506, result has 0.5 percent of original size [2021-11-03 04:42:32,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 111 treesize of output 22 [2021-11-03 04:42:32,387 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-03 04:42:32,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:42:32,681 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:42:32,692 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 486 [2021-11-03 04:42:32,701 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:42:32,704 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 770 [2021-11-03 04:42:36,251 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_13 (_ BitVec 64)) (v_DerPreprocessor_14 (_ BitVec 64)) (v_DerPreprocessor_11 (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (v_DerPreprocessor_9 (_ BitVec 64)) (v_DerPreprocessor_15 (_ BitVec 64)) (v_DerPreprocessor_16 (_ BitVec 64)) (ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_mul_u64_checked_~r.base (store (store (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_aws_mul_u64_checked_~r.base) ULTIMATE.start_aws_mul_u64_checked_~r.offset v_DerPreprocessor_9) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv1 64)) v_DerPreprocessor_10) (bvadd (_ bv2 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_11) (bvadd (_ bv3 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_12) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv4 64)) v_DerPreprocessor_13) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv5 64)) v_DerPreprocessor_14) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv6 64)) v_DerPreprocessor_15) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv7 64)) v_DerPreprocessor_16)) c_ULTIMATE.start_aws_array_list_clean_up_~list.base) c_ULTIMATE.start_aws_array_list_clean_up_~list.offset))) (forall ((v_DerPreprocessor_8 (_ BitVec 64)) (v_DerPreprocessor_7 (_ BitVec 64)) (v_DerPreprocessor_6 (_ BitVec 64)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64)) (ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_mul_u64_checked_~r.base (store (store (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_aws_mul_u64_checked_~r.base) ULTIMATE.start_aws_mul_u64_checked_~r.offset v_DerPreprocessor_1) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv1 64)) v_DerPreprocessor_2) (bvadd (_ bv2 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_3) (bvadd (_ bv3 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_4) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv4 64)) v_DerPreprocessor_5) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv5 64)) v_DerPreprocessor_6) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv6 64)) v_DerPreprocessor_7) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv7 64)) v_DerPreprocessor_8)) c_ULTIMATE.start_aws_array_list_clean_up_~list.base) c_ULTIMATE.start_aws_array_list_clean_up_~list.offset)))) is different from false [2021-11-03 04:42:38,571 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_23| (_ BitVec 64))) (or (and (forall ((v_DerPreprocessor_13 (_ BitVec 64)) (v_DerPreprocessor_14 (_ BitVec 64)) (v_DerPreprocessor_11 (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (v_DerPreprocessor_9 (_ BitVec 64)) (v_DerPreprocessor_15 (_ BitVec 64)) (v_DerPreprocessor_16 (_ BitVec 64)) (ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_23| (store (store (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_23|) ULTIMATE.start_aws_mul_u64_checked_~r.offset v_DerPreprocessor_9) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv1 64)) v_DerPreprocessor_10) (bvadd (_ bv2 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_11) (bvadd (_ bv3 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_12) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv4 64)) v_DerPreprocessor_13) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv5 64)) v_DerPreprocessor_14) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv6 64)) v_DerPreprocessor_15) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv7 64)) v_DerPreprocessor_16)) c_ULTIMATE.start_aws_array_list_clean_up_~list.base) c_ULTIMATE.start_aws_array_list_clean_up_~list.offset))) (forall ((v_DerPreprocessor_8 (_ BitVec 64)) (v_DerPreprocessor_7 (_ BitVec 64)) (v_DerPreprocessor_6 (_ BitVec 64)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64)) (ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_23| (store (store (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_23|) ULTIMATE.start_aws_mul_u64_checked_~r.offset v_DerPreprocessor_1) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv1 64)) v_DerPreprocessor_2) (bvadd (_ bv2 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_3) (bvadd (_ bv3 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_4) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv4 64)) v_DerPreprocessor_5) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv5 64)) v_DerPreprocessor_6) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv6 64)) v_DerPreprocessor_7) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv7 64)) v_DerPreprocessor_8)) c_ULTIMATE.start_aws_array_list_clean_up_~list.base) c_ULTIMATE.start_aws_array_list_clean_up_~list.offset)))) (not (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_23|) (_ bv0 64)) ((_ extract 7 0) (_ bv0 64)))))) is different from false [2021-11-03 04:42:41,643 INFO L354 Elim1Store]: treesize reduction 4, result has 69.2 percent of original size [2021-11-03 04:42:41,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 119 [2021-11-03 04:42:44,290 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_23| (_ BitVec 64))) (or (and (forall ((v_DerPreprocessor_13 (_ BitVec 64)) (v_DerPreprocessor_14 (_ BitVec 64)) (v_DerPreprocessor_11 (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (v_DerPreprocessor_9 (_ BitVec 64)) (v_DerPreprocessor_15 (_ BitVec 64)) (v_DerPreprocessor_16 (_ BitVec 64)) (ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_23| (store (store (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_23|) ULTIMATE.start_aws_mul_u64_checked_~r.offset v_DerPreprocessor_9) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv1 64)) v_DerPreprocessor_10) (bvadd (_ bv2 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_11) (bvadd (_ bv3 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_12) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv4 64)) v_DerPreprocessor_13) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv5 64)) v_DerPreprocessor_14) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv6 64)) v_DerPreprocessor_15) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv7 64)) v_DerPreprocessor_16)) c_ULTIMATE.start_aws_array_list_clean_up_~list.base) c_ULTIMATE.start_aws_array_list_clean_up_~list.offset))) (forall ((v_prenex_1 (_ BitVec 64)) (v_DerPreprocessor_8 (_ BitVec 64)) (v_DerPreprocessor_7 (_ BitVec 64)) (v_DerPreprocessor_6 (_ BitVec 64)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_23| (store (store (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_23|) v_prenex_1 v_DerPreprocessor_1) (bvadd v_prenex_1 (_ bv1 64)) v_DerPreprocessor_2) (bvadd (_ bv2 64) v_prenex_1) v_DerPreprocessor_3) (bvadd (_ bv3 64) v_prenex_1) v_DerPreprocessor_4) (bvadd v_prenex_1 (_ bv4 64)) v_DerPreprocessor_5) (bvadd v_prenex_1 (_ bv5 64)) v_DerPreprocessor_6) (bvadd v_prenex_1 (_ bv6 64)) v_DerPreprocessor_7) (bvadd v_prenex_1 (_ bv7 64)) v_DerPreprocessor_8)) c_ULTIMATE.start_aws_array_list_clean_up_~list.base) c_ULTIMATE.start_aws_array_list_clean_up_~list.offset)))) (and (= |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_23| c_ULTIMATE.start_aws_is_mem_zeroed_~buf_u8~0.base) (= (_ bv0 64) (bvadd c_ULTIMATE.start_aws_is_mem_zeroed_~i~0 c_ULTIMATE.start_aws_is_mem_zeroed_~buf_u8~0.offset))))) is different from false [2021-11-03 04:42:46,694 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_23| (_ BitVec 64))) (or (and (= (_ bv0 64) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset|) (= |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_23| |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|)) (and (forall ((v_DerPreprocessor_13 (_ BitVec 64)) (v_DerPreprocessor_14 (_ BitVec 64)) (v_DerPreprocessor_11 (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (v_DerPreprocessor_9 (_ BitVec 64)) (v_DerPreprocessor_15 (_ BitVec 64)) (v_DerPreprocessor_16 (_ BitVec 64)) (ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_23| (store (store (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_23|) ULTIMATE.start_aws_mul_u64_checked_~r.offset v_DerPreprocessor_9) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv1 64)) v_DerPreprocessor_10) (bvadd (_ bv2 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_11) (bvadd (_ bv3 64) ULTIMATE.start_aws_mul_u64_checked_~r.offset) v_DerPreprocessor_12) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv4 64)) v_DerPreprocessor_13) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv5 64)) v_DerPreprocessor_14) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv6 64)) v_DerPreprocessor_15) (bvadd ULTIMATE.start_aws_mul_u64_checked_~r.offset (_ bv7 64)) v_DerPreprocessor_16)) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset|))) (forall ((v_prenex_1 (_ BitVec 64)) (v_DerPreprocessor_8 (_ BitVec 64)) (v_DerPreprocessor_7 (_ BitVec 64)) (v_DerPreprocessor_6 (_ BitVec 64)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_23| (store (store (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_array_list_is_valid_~#required_size~0.base_23|) v_prenex_1 v_DerPreprocessor_1) (bvadd v_prenex_1 (_ bv1 64)) v_DerPreprocessor_2) (bvadd (_ bv2 64) v_prenex_1) v_DerPreprocessor_3) (bvadd (_ bv3 64) v_prenex_1) v_DerPreprocessor_4) (bvadd v_prenex_1 (_ bv4 64)) v_DerPreprocessor_5) (bvadd v_prenex_1 (_ bv5 64)) v_DerPreprocessor_6) (bvadd v_prenex_1 (_ bv6 64)) v_DerPreprocessor_7) (bvadd v_prenex_1 (_ bv7 64)) v_DerPreprocessor_8)) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset|)))))) is different from false [2021-11-03 04:42:49,508 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:42:49,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625394809] [2021-11-03 04:42:49,509 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_aws_mul_u64_checked_~r.offset] [2021-11-03 04:42:49,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1144196617] [2021-11-03 04:42:49,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:42:49,509 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:42:49,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:42:49,511 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:42:49,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb2b94d-e2c1-418a-b0e4-34f8212802d4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process