./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:42:15,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:42:15,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:42:15,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:42:15,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:42:15,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:42:15,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:42:15,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:42:15,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:42:15,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:42:15,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:42:15,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:42:15,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:42:15,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:42:15,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:42:15,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:42:15,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:42:15,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:42:15,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:42:15,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:42:15,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:42:15,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:42:15,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:42:15,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:42:15,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:42:15,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:42:15,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:42:15,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:42:15,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:42:15,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:42:15,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:42:15,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:42:15,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:42:15,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:42:15,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:42:15,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:42:15,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:42:15,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:42:15,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:42:15,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:42:15,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:42:15,904 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:42:15,949 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:42:15,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:42:15,953 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:42:15,953 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:42:15,954 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:42:15,954 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:42:15,954 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:42:15,955 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:42:15,962 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:42:15,962 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:42:15,963 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:42:15,963 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:42:15,964 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:42:15,964 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:42:15,964 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:42:15,964 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:42:15,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:42:15,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:42:15,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:42:15,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:42:15,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:42:15,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:42:15,967 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:42:15,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:42:15,967 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:42:15,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:42:15,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:42:15,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:42:15,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:42:15,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:42:15,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:42:15,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:42:15,971 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:42:15,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:42:15,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:42:15,972 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:42:15,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:42:15,972 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_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 [2021-11-19 14:42:16,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:42:16,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:42:16,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:42:16,261 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:42:16,261 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:42:16,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2021-11-19 14:42:16,353 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/data/5db5b0ba6/7520eb8dda614000b4eb89cf4d2ef9f9/FLAGd773d0889 [2021-11-19 14:42:17,372 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:42:17,375 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2021-11-19 14:42:17,424 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/data/5db5b0ba6/7520eb8dda614000b4eb89cf4d2ef9f9/FLAGd773d0889 [2021-11-19 14:42:17,786 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/data/5db5b0ba6/7520eb8dda614000b4eb89cf4d2ef9f9 [2021-11-19 14:42:17,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:42:17,790 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:42:17,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:42:17,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:42:17,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:42:17,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:42:17" (1/1) ... [2021-11-19 14:42:17,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca35b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:17, skipping insertion in model container [2021-11-19 14:42:17,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:42:17" (1/1) ... [2021-11-19 14:42:17,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:42:17,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:42:18,244 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4502,4515] [2021-11-19 14:42:18,252 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4562,4575] [2021-11-19 14:42:18,279 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:42:18,285 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:42:19,193 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:19,194 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:19,195 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:19,196 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:19,197 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:19,213 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:19,214 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:19,216 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:19,217 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:19,640 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:42:19,641 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:42:19,642 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:42:19,644 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:42:19,646 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:42:19,647 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:42:19,648 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:42:19,648 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:42:19,649 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:42:19,650 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:42:19,843 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:42:19,934 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:19,934 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:19,999 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:42:20,085 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:42:20,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@642ac200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:20, skipping insertion in model container [2021-11-19 14:42:20,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:42:20,089 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:42:20,093 INFO L158 Benchmark]: Toolchain (without parser) took 2300.74ms. Allocated memory was 119.5MB in the beginning and 172.0MB in the end (delta: 52.4MB). Free memory was 76.1MB in the beginning and 135.1MB in the end (delta: -59.0MB). Peak memory consumption was 46.0MB. Max. memory is 16.1GB. [2021-11-19 14:42:20,094 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 77.6MB. Free memory was 31.1MB in the beginning and 31.1MB in the end (delta: 44.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:42:20,096 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2297.86ms. Allocated memory was 119.5MB in the beginning and 172.0MB in the end (delta: 52.4MB). Free memory was 75.9MB in the beginning and 135.2MB in the end (delta: -59.3MB). Peak memory consumption was 46.0MB. Max. memory is 16.1GB. [2021-11-19 14:42:20,099 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 77.6MB. Free memory was 31.1MB in the beginning and 31.1MB in the end (delta: 44.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2297.86ms. Allocated memory was 119.5MB in the beginning and 172.0MB in the end (delta: 52.4MB). Free memory was 75.9MB in the beginning and 135.2MB in the end (delta: -59.3MB). Peak memory consumption was 46.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6984]: 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_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:42:22,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:42:22,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:42:22,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:42:22,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:42:22,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:42:22,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:42:22,442 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:42:22,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:42:22,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:42:22,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:42:22,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:42:22,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:42:22,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:42:22,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:42:22,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:42:22,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:42:22,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:42:22,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:42:22,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:42:22,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:42:22,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:42:22,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:42:22,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:42:22,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:42:22,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:42:22,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:42:22,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:42:22,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:42:22,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:42:22,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:42:22,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:42:22,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:42:22,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:42:22,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:42:22,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:42:22,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:42:22,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:42:22,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:42:22,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:42:22,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:42:22,528 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:42:22,563 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:42:22,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:42:22,565 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:42:22,565 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:42:22,565 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:42:22,566 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:42:22,566 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:42:22,566 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:42:22,566 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:42:22,567 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:42:22,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:42:22,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:42:22,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:42:22,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:42:22,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:42:22,569 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:42:22,569 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:42:22,569 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:42:22,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:42:22,570 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:42:22,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:42:22,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:42:22,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:42:22,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:42:22,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:42:22,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:42:22,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:42:22,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:42:22,572 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:42:22,572 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:42:22,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:42:22,573 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:42:22,573 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:42:22,573 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_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 [2021-11-19 14:42:23,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:42:23,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:42:23,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:42:23,042 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:42:23,043 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:42:23,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2021-11-19 14:42:23,128 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/data/a2fd57d7a/a05a4534287945c6a557e5850b196fe2/FLAG6e8e2e089 [2021-11-19 14:42:24,139 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:42:24,140 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2021-11-19 14:42:24,191 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/data/a2fd57d7a/a05a4534287945c6a557e5850b196fe2/FLAG6e8e2e089 [2021-11-19 14:42:24,564 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/data/a2fd57d7a/a05a4534287945c6a557e5850b196fe2 [2021-11-19 14:42:24,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:42:24,569 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:42:24,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:42:24,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:42:24,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:42:24,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:42:24" (1/1) ... [2021-11-19 14:42:24,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a587601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:24, skipping insertion in model container [2021-11-19 14:42:24,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:42:24" (1/1) ... [2021-11-19 14:42:24,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:42:24,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:42:24,989 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4502,4515] [2021-11-19 14:42:24,996 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4562,4575] [2021-11-19 14:42:25,020 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:42:25,026 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:42:26,028 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:26,029 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:26,030 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:26,031 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:26,033 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:26,051 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:26,052 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:26,054 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:26,054 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:26,538 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:42:26,540 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:42:26,541 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:42:26,543 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:42:26,545 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:42:26,546 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:42:26,547 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:42:26,547 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:42:26,548 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:42:26,549 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:42:26,743 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:42:26,910 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:26,910 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:27,005 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:42:27,073 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:42:27,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:42:27,156 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4502,4515] [2021-11-19 14:42:27,157 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4562,4575] [2021-11-19 14:42:27,159 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:42:27,160 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:42:27,196 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:27,197 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:27,197 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:27,198 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:27,199 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:27,206 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:27,207 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:27,208 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:27,209 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:27,262 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:42:27,271 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:42:27,272 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:42:27,273 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:42:27,274 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:42:27,275 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:42:27,275 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:42:27,276 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:42:27,276 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:42:27,277 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:42:27,329 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:42:27,430 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:27,431 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:27,502 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:42:27,566 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:42:27,596 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4502,4515] [2021-11-19 14:42:27,596 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4562,4575] [2021-11-19 14:42:27,598 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:42:27,599 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:42:27,656 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:27,656 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:27,657 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:27,657 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:27,658 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:27,664 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:27,664 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:27,665 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:27,666 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:27,702 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:42:27,704 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:42:27,705 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:42:27,742 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:42:27,743 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:42:27,744 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:42:27,744 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:42:27,745 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:42:27,745 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:42:27,746 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:42:27,773 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:42:27,835 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:27,836 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:27,917 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:42:28,236 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:42:28,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:28 WrapperNode [2021-11-19 14:42:28,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:42:28,239 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:42:28,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:42:28,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:42:28,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:28" (1/1) ... [2021-11-19 14:42:28,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:28" (1/1) ... [2021-11-19 14:42:28,528 INFO L137 Inliner]: procedures = 713, calls = 2506, calls flagged for inlining = 56, calls inlined = 8, statements flattened = 814 [2021-11-19 14:42:28,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:42:28,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:42:28,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:42:28,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:42:28,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:28" (1/1) ... [2021-11-19 14:42:28,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:28" (1/1) ... [2021-11-19 14:42:28,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:28" (1/1) ... [2021-11-19 14:42:28,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:28" (1/1) ... [2021-11-19 14:42:28,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:28" (1/1) ... [2021-11-19 14:42:28,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:28" (1/1) ... [2021-11-19 14:42:28,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:28" (1/1) ... [2021-11-19 14:42:28,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:42:28,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:42:28,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:42:28,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:42:28,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:28" (1/1) ... [2021-11-19 14:42:28,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:42:28,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:42:28,745 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:42:28,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:42:28,803 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-19 14:42:28,804 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-19 14:42:28,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:42:28,804 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 14:42:28,804 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 14:42:28,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:42:28,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:42:28,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:42:28,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:42:28,807 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2021-11-19 14:42:28,807 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2021-11-19 14:42:28,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:42:28,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:42:28,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:42:28,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:42:28,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:42:28,808 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 14:42:28,809 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 14:42:28,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:42:28,809 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-19 14:42:28,809 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-19 14:42:28,809 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:42:28,809 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:42:28,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:42:28,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:42:28,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:42:28,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:42:28,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:42:28,811 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 14:42:28,811 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 14:42:28,811 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-11-19 14:42:28,812 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-11-19 14:42:28,812 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-11-19 14:42:28,812 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-11-19 14:42:29,196 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:42:29,202 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:42:33,641 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:42:33,659 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:42:33,663 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 14:42:33,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:42:33 BoogieIcfgContainer [2021-11-19 14:42:33,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:42:33,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:42:33,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:42:33,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:42:33,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:42:24" (1/3) ... [2021-11-19 14:42:33,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49660163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:42:33, skipping insertion in model container [2021-11-19 14:42:33,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:28" (2/3) ... [2021-11-19 14:42:33,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49660163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:42:33, skipping insertion in model container [2021-11-19 14:42:33,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:42:33" (3/3) ... [2021-11-19 14:42:33,686 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_secure_harness.i [2021-11-19 14:42:33,692 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:42:33,692 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:42:33,771 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:42:33,778 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:42:33,779 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:42:33,804 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 79 states have (on average 1.2278481012658229) internal successors, (97), 80 states have internal predecessors, (97), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-19 14:42:33,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-19 14:42:33,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:42:33,824 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:42:33,825 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:42:33,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:42:33,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1424840205, now seen corresponding path program 1 times [2021-11-19 14:42:33,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:42:33,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282531784] [2021-11-19 14:42:33,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:42:33,855 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:42:33,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:42:33,862 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:42:33,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:42:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:42:34,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 1417 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:42:34,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-19 14:42:35,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:42:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-19 14:42:35,415 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:42:35,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282531784] [2021-11-19 14:42:35,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282531784] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:42:35,416 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:42:35,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:42:35,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81631895] [2021-11-19 14:42:35,421 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:42:35,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:42:35,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:42:35,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:42:35,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:42:35,473 INFO L87 Difference]: Start difference. First operand has 119 states, 79 states have (on average 1.2278481012658229) internal successors, (97), 80 states have internal predecessors, (97), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 14:42:35,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:42:35,542 INFO L93 Difference]: Finished difference Result 234 states and 321 transitions. [2021-11-19 14:42:35,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:42:35,546 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 77 [2021-11-19 14:42:35,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:42:35,564 INFO L225 Difference]: With dead ends: 234 [2021-11-19 14:42:35,565 INFO L226 Difference]: Without dead ends: 114 [2021-11-19 14:42:35,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:42:35,579 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:42:35,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:42:35,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-19 14:42:35,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-11-19 14:42:35,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 75 states have (on average 1.2) internal successors, (90), 76 states have internal predecessors, (90), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-19 14:42:35,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 145 transitions. [2021-11-19 14:42:35,656 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 145 transitions. Word has length 77 [2021-11-19 14:42:35,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:42:35,656 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 145 transitions. [2021-11-19 14:42:35,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 14:42:35,657 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 145 transitions. [2021-11-19 14:42:35,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-19 14:42:35,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:42:35,671 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:42:35,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:42:35,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:42:35,886 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:42:35,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:42:35,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1664499927, now seen corresponding path program 1 times [2021-11-19 14:42:35,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:42:35,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188204497] [2021-11-19 14:42:35,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:42:35,891 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:42:35,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:42:35,892 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:42:35,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:42:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:42:36,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 1417 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:42:36,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:37,181 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-19 14:42:37,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:42:37,609 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-19 14:42:37,610 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:42:37,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [188204497] [2021-11-19 14:42:37,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [188204497] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:42:37,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:42:37,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 14:42:37,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673704798] [2021-11-19 14:42:37,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:42:37,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:42:37,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:42:37,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:42:37,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:42:37,613 INFO L87 Difference]: Start difference. First operand 114 states and 145 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-19 14:42:37,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:42:37,855 INFO L93 Difference]: Finished difference Result 206 states and 269 transitions. [2021-11-19 14:42:37,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:42:37,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 77 [2021-11-19 14:42:37,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:42:37,861 INFO L225 Difference]: With dead ends: 206 [2021-11-19 14:42:37,861 INFO L226 Difference]: Without dead ends: 117 [2021-11-19 14:42:37,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:42:37,863 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 39 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:42:37,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 462 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:42:37,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-19 14:42:37,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-11-19 14:42:37,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 77 states have (on average 1.1948051948051948) internal successors, (92), 79 states have internal predecessors, (92), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (32), 27 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-19 14:42:37,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 152 transitions. [2021-11-19 14:42:37,897 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 152 transitions. Word has length 77 [2021-11-19 14:42:37,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:42:37,898 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 152 transitions. [2021-11-19 14:42:37,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-19 14:42:37,899 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 152 transitions. [2021-11-19 14:42:37,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-19 14:42:37,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:42:37,903 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:42:37,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:42:38,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:42:38,132 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:42:38,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:42:38,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1289533548, now seen corresponding path program 1 times [2021-11-19 14:42:38,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:42:38,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200586545] [2021-11-19 14:42:38,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:42:38,137 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:42:38,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:42:38,138 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:42:38,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:42:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:42:39,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:42:39,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:39,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-19 14:42:40,607 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-19 14:42:40,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:42:41,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-19 14:42:41,984 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-19 14:42:41,984 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:42:41,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200586545] [2021-11-19 14:42:41,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200586545] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:42:41,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:42:41,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 19 [2021-11-19 14:42:41,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536182979] [2021-11-19 14:42:41,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:42:41,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:42:41,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:42:41,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:42:41,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:42:41,988 INFO L87 Difference]: Start difference. First operand 117 states and 152 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 10 states have internal predecessors, (42), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2021-11-19 14:42:42,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:42:42,237 INFO L93 Difference]: Finished difference Result 229 states and 299 transitions. [2021-11-19 14:42:42,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:42:42,239 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 10 states have internal predecessors, (42), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 83 [2021-11-19 14:42:42,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:42:42,242 INFO L225 Difference]: With dead ends: 229 [2021-11-19 14:42:42,242 INFO L226 Difference]: Without dead ends: 130 [2021-11-19 14:42:42,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:42:42,245 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 26 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:42:42,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 875 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 94 Unchecked, 0.1s Time] [2021-11-19 14:42:42,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-19 14:42:42,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-11-19 14:42:42,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 89 states have (on average 1.202247191011236) internal successors, (107), 91 states have internal predecessors, (107), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (33), 27 states have call predecessors, (33), 27 states have call successors, (33) [2021-11-19 14:42:42,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 168 transitions. [2021-11-19 14:42:42,264 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 168 transitions. Word has length 83 [2021-11-19 14:42:42,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:42:42,265 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 168 transitions. [2021-11-19 14:42:42,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 10 states have internal predecessors, (42), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2021-11-19 14:42:42,265 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 168 transitions. [2021-11-19 14:42:42,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-19 14:42:42,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:42:42,267 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:42:42,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:42:42,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:42:42,490 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:42:42,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:42:42,491 INFO L85 PathProgramCache]: Analyzing trace with hash 976847638, now seen corresponding path program 1 times [2021-11-19 14:42:42,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:42:42,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568903254] [2021-11-19 14:42:42,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:42:42,496 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:42:42,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:42:42,499 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:42:42,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:42:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:42:43,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 1427 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:42:43,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:43,700 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-19 14:42:43,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:42:43,901 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-19 14:42:43,902 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:42:43,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568903254] [2021-11-19 14:42:43,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568903254] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:42:43,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:42:43,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-19 14:42:43,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128099212] [2021-11-19 14:42:43,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:42:43,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:42:43,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:42:43,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:42:43,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:42:43,905 INFO L87 Difference]: Start difference. First operand 130 states and 168 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 14:42:43,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:42:43,966 INFO L93 Difference]: Finished difference Result 232 states and 311 transitions. [2021-11-19 14:42:43,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:42:43,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 83 [2021-11-19 14:42:43,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:42:43,969 INFO L225 Difference]: With dead ends: 232 [2021-11-19 14:42:43,970 INFO L226 Difference]: Without dead ends: 136 [2021-11-19 14:42:43,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:42:43,972 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 20 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:42:43,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 427 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:42:43,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-19 14:42:43,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 124. [2021-11-19 14:42:43,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 84 states have (on average 1.2023809523809523) internal successors, (101), 85 states have internal predecessors, (101), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (32), 27 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-19 14:42:43,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 161 transitions. [2021-11-19 14:42:43,987 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 161 transitions. Word has length 83 [2021-11-19 14:42:43,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:42:43,988 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 161 transitions. [2021-11-19 14:42:43,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 14:42:43,989 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 161 transitions. [2021-11-19 14:42:43,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 14:42:43,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:42:43,990 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:42:44,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:42:44,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:42:44,213 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:42:44,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:42:44,214 INFO L85 PathProgramCache]: Analyzing trace with hash -217649380, now seen corresponding path program 1 times [2021-11-19 14:42:44,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:42:44,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686518834] [2021-11-19 14:42:44,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:42:44,218 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:42:44,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:42:44,219 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:42:44,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:42:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:42:45,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:42:45,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:45,945 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-19 14:42:45,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:42:46,615 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-19 14:42:46,615 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:42:46,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686518834] [2021-11-19 14:42:46,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686518834] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:42:46,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:42:46,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-19 14:42:46,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882983149] [2021-11-19 14:42:46,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:42:46,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:42:46,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:42:46,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:42:46,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:42:46,617 INFO L87 Difference]: Start difference. First operand 124 states and 161 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 14:42:48,718 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:42:50,730 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:42:53,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:42:53,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:42:53,930 INFO L93 Difference]: Finished difference Result 238 states and 324 transitions. [2021-11-19 14:42:53,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:42:53,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2021-11-19 14:42:53,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:42:53,935 INFO L225 Difference]: With dead ends: 238 [2021-11-19 14:42:53,935 INFO L226 Difference]: Without dead ends: 144 [2021-11-19 14:42:53,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:42:53,937 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 42 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:42:53,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 525 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 2 Unknown, 31 Unchecked, 7.1s Time] [2021-11-19 14:42:53,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-19 14:42:53,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 133. [2021-11-19 14:42:53,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 93 states have (on average 1.2150537634408602) internal successors, (113), 94 states have internal predecessors, (113), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (32), 27 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-19 14:42:53,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 173 transitions. [2021-11-19 14:42:53,956 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 173 transitions. Word has length 87 [2021-11-19 14:42:53,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:42:53,957 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 173 transitions. [2021-11-19 14:42:53,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 14:42:53,957 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 173 transitions. [2021-11-19 14:42:53,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 14:42:53,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:42:53,959 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:42:53,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-19 14:42:54,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:42:54,170 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:42:54,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:42:54,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1320690650, now seen corresponding path program 1 times [2021-11-19 14:42:54,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:42:54,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304176832] [2021-11-19 14:42:54,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:42:54,173 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:42:54,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:42:54,173 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:42:54,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:42:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:42:54,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 1436 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 14:42:54,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:56,836 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-19 14:42:56,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:42:58,889 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-19 14:42:58,890 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:42:58,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304176832] [2021-11-19 14:42:58,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304176832] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:42:58,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:42:58,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 19 [2021-11-19 14:42:58,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134541954] [2021-11-19 14:42:58,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:42:58,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:42:58,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:42:58,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:42:58,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:42:58,892 INFO L87 Difference]: Start difference. First operand 133 states and 173 transitions. Second operand has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-19 14:43:01,037 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:03,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:07,557 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:08,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:43:08,628 INFO L93 Difference]: Finished difference Result 246 states and 337 transitions. [2021-11-19 14:43:08,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:43:08,631 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 87 [2021-11-19 14:43:08,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:43:08,635 INFO L225 Difference]: With dead ends: 246 [2021-11-19 14:43:08,635 INFO L226 Difference]: Without dead ends: 142 [2021-11-19 14:43:08,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-19 14:43:08,637 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 38 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 250 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:43:08,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 1338 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 2 Unknown, 250 Unchecked, 8.1s Time] [2021-11-19 14:43:08,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-19 14:43:08,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 135. [2021-11-19 14:43:08,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 95 states have (on average 1.1894736842105262) internal successors, (113), 96 states have internal predecessors, (113), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (32), 27 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-19 14:43:08,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 173 transitions. [2021-11-19 14:43:08,656 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 173 transitions. Word has length 87 [2021-11-19 14:43:08,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:43:08,656 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 173 transitions. [2021-11-19 14:43:08,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-19 14:43:08,657 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 173 transitions. [2021-11-19 14:43:08,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 14:43:08,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:43:08,658 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:43:08,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:43:08,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:43:08,886 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:43:08,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:43:08,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1043267870, now seen corresponding path program 1 times [2021-11-19 14:43:08,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:43:08,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525694271] [2021-11-19 14:43:08,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:43:08,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:43:08,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:43:08,889 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:43:08,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:43:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:43:09,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 1437 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:43:09,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:43:09,833 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-19 14:43:09,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:43:10,040 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-19 14:43:10,040 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:43:10,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525694271] [2021-11-19 14:43:10,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525694271] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:43:10,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:43:10,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-19 14:43:10,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537441159] [2021-11-19 14:43:10,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:43:10,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:43:10,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:43:10,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:43:10,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:43:10,043 INFO L87 Difference]: Start difference. First operand 135 states and 173 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 14:43:10,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:43:10,121 INFO L93 Difference]: Finished difference Result 244 states and 321 transitions. [2021-11-19 14:43:10,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:43:10,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2021-11-19 14:43:10,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:43:10,123 INFO L225 Difference]: With dead ends: 244 [2021-11-19 14:43:10,124 INFO L226 Difference]: Without dead ends: 139 [2021-11-19 14:43:10,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:43:10,125 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 34 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:43:10,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 418 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:43:10,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-19 14:43:10,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 131. [2021-11-19 14:43:10,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 91 states have (on average 1.164835164835165) internal successors, (106), 92 states have internal predecessors, (106), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (32), 27 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-19 14:43:10,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 166 transitions. [2021-11-19 14:43:10,140 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 166 transitions. Word has length 87 [2021-11-19 14:43:10,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:43:10,141 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 166 transitions. [2021-11-19 14:43:10,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 14:43:10,141 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 166 transitions. [2021-11-19 14:43:10,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 14:43:10,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:43:10,142 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:43:10,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:43:10,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:43:10,366 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:43:10,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:43:10,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1864914016, now seen corresponding path program 1 times [2021-11-19 14:43:10,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:43:10,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632616272] [2021-11-19 14:43:10,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:43:10,369 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:43:10,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:43:10,370 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:43:10,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:43:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:43:11,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 1434 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:43:11,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:43:11,558 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-19 14:43:11,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:43:11,956 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-19 14:43:11,956 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:43:11,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632616272] [2021-11-19 14:43:11,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632616272] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:43:11,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:43:11,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-19 14:43:11,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872408908] [2021-11-19 14:43:11,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:43:11,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:43:11,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:43:11,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:43:11,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:43:11,958 INFO L87 Difference]: Start difference. First operand 131 states and 166 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-19 14:43:12,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:43:12,326 INFO L93 Difference]: Finished difference Result 244 states and 319 transitions. [2021-11-19 14:43:12,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:43:12,327 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 87 [2021-11-19 14:43:12,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:43:12,330 INFO L225 Difference]: With dead ends: 244 [2021-11-19 14:43:12,330 INFO L226 Difference]: Without dead ends: 141 [2021-11-19 14:43:12,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:43:12,332 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 12 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:43:12,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1015 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:43:12,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-19 14:43:12,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 131. [2021-11-19 14:43:12,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 91 states have (on average 1.164835164835165) internal successors, (106), 92 states have internal predecessors, (106), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (32), 27 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-19 14:43:12,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 166 transitions. [2021-11-19 14:43:12,348 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 166 transitions. Word has length 87 [2021-11-19 14:43:12,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:43:12,348 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 166 transitions. [2021-11-19 14:43:12,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-19 14:43:12,349 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 166 transitions. [2021-11-19 14:43:12,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-19 14:43:12,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:43:12,351 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:43:12,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:43:12,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:43:12,574 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:43:12,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:43:12,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1458918715, now seen corresponding path program 1 times [2021-11-19 14:43:12,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:43:12,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1349932848] [2021-11-19 14:43:12,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:43:12,576 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:43:12,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:43:12,579 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:43:12,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:43:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:43:13,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:43:13,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:43:13,693 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-19 14:43:13,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:43:14,040 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-19 14:43:14,041 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:43:14,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1349932848] [2021-11-19 14:43:14,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1349932848] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:43:14,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:43:14,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2021-11-19 14:43:14,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695209404] [2021-11-19 14:43:14,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:43:14,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:43:14,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:43:14,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:43:14,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:43:14,043 INFO L87 Difference]: Start difference. First operand 131 states and 166 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-19 14:43:14,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:43:14,235 INFO L93 Difference]: Finished difference Result 234 states and 301 transitions. [2021-11-19 14:43:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:43:14,237 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 89 [2021-11-19 14:43:14,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:43:14,238 INFO L225 Difference]: With dead ends: 234 [2021-11-19 14:43:14,239 INFO L226 Difference]: Without dead ends: 134 [2021-11-19 14:43:14,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:43:14,240 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 54 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:43:14,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 475 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:43:14,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-19 14:43:14,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-11-19 14:43:14,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 93 states have (on average 1.1612903225806452) internal successors, (108), 95 states have internal predecessors, (108), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (35), 27 states have call predecessors, (35), 27 states have call successors, (35) [2021-11-19 14:43:14,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 171 transitions. [2021-11-19 14:43:14,255 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 171 transitions. Word has length 89 [2021-11-19 14:43:14,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:43:14,255 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 171 transitions. [2021-11-19 14:43:14,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-19 14:43:14,256 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 171 transitions. [2021-11-19 14:43:14,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:43:14,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:43:14,257 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:43:14,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:43:14,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:43:14,486 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:43:14,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:43:14,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1307369168, now seen corresponding path program 1 times [2021-11-19 14:43:14,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:43:14,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398065922] [2021-11-19 14:43:14,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:43:14,489 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:43:14,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:43:14,497 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:43:14,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:43:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:43:15,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 14:43:15,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:43:17,844 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 55 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-19 14:43:17,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:43:32,295 WARN L227 SmtUtils]: Spent 11.19s on a formula simplification. DAG size of input: 526 DAG size of output: 272 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 14:43:32,322 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-19 14:43:32,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 132 treesize of output 771 [2021-11-19 14:51:26,642 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-19 14:51:26,642 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:26,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398065922] [2021-11-19 14:51:26,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398065922] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:51:26,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2067702846] [2021-11-19 14:51:26,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:26,643 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:51:26,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:51:26,644 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:51:26,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-19 14:51:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:27,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:51:27,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-19 14:51:28,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:28,548 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-19 14:51:28,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2067702846] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:51:28,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:51:28,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12, 10, 8] total 24 [2021-11-19 14:51:28,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428942665] [2021-11-19 14:51:28,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:28,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:51:28,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:28,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:51:28,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2021-11-19 14:51:28,551 INFO L87 Difference]: Start difference. First operand 134 states and 171 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 5 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2021-11-19 14:51:29,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:29,155 INFO L93 Difference]: Finished difference Result 232 states and 295 transitions. [2021-11-19 14:51:29,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:51:29,157 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 5 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) Word has length 95 [2021-11-19 14:51:29,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:29,159 INFO L225 Difference]: With dead ends: 232 [2021-11-19 14:51:29,159 INFO L226 Difference]: Without dead ends: 134 [2021-11-19 14:51:29,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 352 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2021-11-19 14:51:29,161 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 70 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:29,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 814 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:51:29,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-19 14:51:29,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-11-19 14:51:29,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 93 states have (on average 1.1612903225806452) internal successors, (108), 95 states have internal predecessors, (108), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (33), 27 states have call predecessors, (33), 27 states have call successors, (33) [2021-11-19 14:51:29,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 169 transitions. [2021-11-19 14:51:29,173 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 169 transitions. Word has length 95 [2021-11-19 14:51:29,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:29,173 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 169 transitions. [2021-11-19 14:51:29,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 5 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2021-11-19 14:51:29,174 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 169 transitions. [2021-11-19 14:51:29,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-19 14:51:29,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:29,176 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:51:29,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2021-11-19 14:51:29,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:29,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:29,581 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:51:29,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:29,581 INFO L85 PathProgramCache]: Analyzing trace with hash 755211078, now seen corresponding path program 1 times [2021-11-19 14:51:29,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:29,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821553231] [2021-11-19 14:51:29,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:29,584 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:29,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:29,585 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:29,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0255ca-2418-4a66-971a-d3bba11c36b4/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:51:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:30,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 14:51:30,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:32,659 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 79 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 14:51:32,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:45,553 WARN L227 SmtUtils]: Spent 10.05s on a formula simplification. DAG size of input: 526 DAG size of output: 272 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 14:51:45,555 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-19 14:51:45,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 132 treesize of output 771