./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/memcpy_using_uint64_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_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/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_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/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_59798465-7877-49b2-a47b-6430e21142c0/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 d67b4b463cf9b59771b705723a66a102d698cbc5859334aa26ed48a8838f7285 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:25:03,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:25:03,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:25:03,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:25:03,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:25:03,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:25:03,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:25:03,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:25:03,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:25:03,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:25:03,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:25:03,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:25:03,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:25:03,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:25:03,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:25:03,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:25:03,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:25:03,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:25:03,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:25:03,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:25:03,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:25:03,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:25:03,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:25:03,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:25:03,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:25:03,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:25:03,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:25:03,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:25:03,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:25:03,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:25:03,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:25:03,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:25:03,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:25:03,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:25:03,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:25:03,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:25:03,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:25:03,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:25:03,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:25:03,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:25:03,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:25:03,975 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 13:25:04,023 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:25:04,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:25:04,026 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:25:04,026 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:25:04,026 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:25:04,026 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:25:04,026 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:25:04,027 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:25:04,033 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:25:04,033 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:25:04,034 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:25:04,034 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:25:04,034 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:25:04,034 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:25:04,035 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:25:04,035 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:25:04,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:25:04,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:25:04,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:25:04,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:25:04,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:25:04,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:25:04,037 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:25:04,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:25:04,037 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:25:04,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:25:04,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:25:04,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:25:04,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:25:04,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:25:04,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:25:04,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:25:04,039 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:25:04,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:25:04,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:25:04,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:25:04,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:25:04,040 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_59798465-7877-49b2-a47b-6430e21142c0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d67b4b463cf9b59771b705723a66a102d698cbc5859334aa26ed48a8838f7285 [2021-11-19 13:25:04,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:25:04,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:25:04,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:25:04,334 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:25:04,335 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:25:04,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i [2021-11-19 13:25:04,450 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/data/6dc2ac06d/f89e60673ba94819a9a31c0f0ab7a26e/FLAG2da3072c8 [2021-11-19 13:25:05,152 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:25:05,157 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i [2021-11-19 13:25:05,211 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/data/6dc2ac06d/f89e60673ba94819a9a31c0f0ab7a26e/FLAG2da3072c8 [2021-11-19 13:25:05,281 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/data/6dc2ac06d/f89e60673ba94819a9a31c0f0ab7a26e [2021-11-19 13:25:05,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:25:05,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:25:05,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:25:05,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:25:05,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:25:05,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:25:05" (1/1) ... [2021-11-19 13:25:05,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35545412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:05, skipping insertion in model container [2021-11-19 13:25:05,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:25:05" (1/1) ... [2021-11-19 13:25:05,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:25:05,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:25:05,763 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_59798465-7877-49b2-a47b-6430e21142c0/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4531,4544] [2021-11-19 13:25:05,769 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_59798465-7877-49b2-a47b-6430e21142c0/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4591,4604] [2021-11-19 13:25:05,789 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:25:05,794 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:25:06,566 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:06,578 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:06,578 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:06,581 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:06,590 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:06,609 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:06,610 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:06,612 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:06,613 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:06,616 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:06,624 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:06,627 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:06,629 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:06,844 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:25:06,846 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:25:06,847 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:25:06,848 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:25:06,850 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:25:06,851 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:25:06,852 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:25:06,853 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:25:06,854 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:25:06,855 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:25:06,938 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:25:06,951 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 13:25:06,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@48845e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:06, skipping insertion in model container [2021-11-19 13:25:06,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:25:06,952 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:25:06,954 INFO L158 Benchmark]: Toolchain (without parser) took 1664.86ms. Allocated memory was 100.7MB in the beginning and 134.2MB in the end (delta: 33.6MB). Free memory was 62.0MB in the beginning and 85.6MB in the end (delta: -23.7MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2021-11-19 13:25:06,955 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 100.7MB. Free memory was 52.6MB in the beginning and 52.6MB in the end (delta: 42.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:25:06,957 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1662.07ms. Allocated memory was 100.7MB in the beginning and 134.2MB in the end (delta: 33.6MB). Free memory was 61.8MB in the beginning and 85.6MB in the end (delta: -23.8MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2021-11-19 13:25:06,959 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 100.7MB. Free memory was 52.6MB in the beginning and 52.6MB in the end (delta: 42.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1662.07ms. Allocated memory was 100.7MB in the beginning and 134.2MB in the end (delta: 33.6MB). Free memory was 61.8MB in the beginning and 85.6MB in the end (delta: -23.8MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5917]: 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_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/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_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/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_59798465-7877-49b2-a47b-6430e21142c0/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 d67b4b463cf9b59771b705723a66a102d698cbc5859334aa26ed48a8838f7285 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:25:09,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:25:09,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:25:09,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:25:09,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:25:09,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:25:09,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:25:09,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:25:09,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:25:09,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:25:09,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:25:09,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:25:09,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:25:09,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:25:09,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:25:09,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:25:09,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:25:09,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:25:09,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:25:09,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:25:09,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:25:09,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:25:09,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:25:09,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:25:09,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:25:09,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:25:09,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:25:09,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:25:09,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:25:09,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:25:09,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:25:09,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:25:09,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:25:09,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:25:09,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:25:09,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:25:09,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:25:09,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:25:09,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:25:09,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:25:09,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:25:09,363 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 13:25:09,405 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:25:09,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:25:09,407 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:25:09,408 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:25:09,408 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:25:09,408 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:25:09,408 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:25:09,409 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:25:09,409 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:25:09,409 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:25:09,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:25:09,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:25:09,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:25:09,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:25:09,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:25:09,413 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:25:09,414 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:25:09,414 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:25:09,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:25:09,414 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:25:09,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:25:09,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:25:09,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:25:09,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:25:09,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:25:09,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:25:09,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:25:09,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:25:09,417 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:25:09,417 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:25:09,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:25:09,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:25:09,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:25:09,418 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_59798465-7877-49b2-a47b-6430e21142c0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d67b4b463cf9b59771b705723a66a102d698cbc5859334aa26ed48a8838f7285 [2021-11-19 13:25:09,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:25:09,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:25:09,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:25:09,807 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:25:09,808 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:25:09,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i [2021-11-19 13:25:09,886 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/data/402ac00f7/9d7a4fcb39e8481ba8aa4f552510a7ae/FLAGb28992267 [2021-11-19 13:25:10,791 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:25:10,792 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i [2021-11-19 13:25:10,835 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/data/402ac00f7/9d7a4fcb39e8481ba8aa4f552510a7ae/FLAGb28992267 [2021-11-19 13:25:11,305 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/data/402ac00f7/9d7a4fcb39e8481ba8aa4f552510a7ae [2021-11-19 13:25:11,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:25:11,309 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:25:11,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:25:11,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:25:11,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:25:11,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:25:11" (1/1) ... [2021-11-19 13:25:11,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bb43140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:11, skipping insertion in model container [2021-11-19 13:25:11,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:25:11" (1/1) ... [2021-11-19 13:25:11,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:25:11,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:25:11,671 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_59798465-7877-49b2-a47b-6430e21142c0/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4531,4544] [2021-11-19 13:25:11,678 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_59798465-7877-49b2-a47b-6430e21142c0/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4591,4604] [2021-11-19 13:25:11,703 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:25:11,711 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:25:12,500 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:12,501 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:12,501 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:12,502 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:12,503 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:12,518 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:12,519 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:12,521 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:12,522 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:12,524 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:12,525 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:12,526 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:12,526 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:12,755 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:25:12,760 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:25:12,761 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:25:12,763 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:25:12,764 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:25:12,765 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:25:12,766 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:25:12,766 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:25:12,767 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:25:12,768 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:25:12,872 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:25:12,891 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:25:12,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:25:12,931 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_59798465-7877-49b2-a47b-6430e21142c0/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4531,4544] [2021-11-19 13:25:12,932 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_59798465-7877-49b2-a47b-6430e21142c0/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4591,4604] [2021-11-19 13:25:12,934 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:25:12,934 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:25:12,985 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:12,985 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:12,986 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:12,986 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:12,987 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:12,998 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:12,999 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:13,001 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:13,001 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:13,003 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:13,004 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:13,005 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:13,006 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:13,029 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:25:13,030 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:25:13,031 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:25:13,032 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:25:13,033 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:25:13,034 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:25:13,035 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:25:13,036 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:25:13,036 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:25:13,037 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:25:13,073 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:25:13,086 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:25:13,121 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_59798465-7877-49b2-a47b-6430e21142c0/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4531,4544] [2021-11-19 13:25:13,129 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_59798465-7877-49b2-a47b-6430e21142c0/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4591,4604] [2021-11-19 13:25:13,132 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:25:13,145 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:25:13,208 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:13,208 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:13,209 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:13,210 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:13,210 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:13,232 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:13,233 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:13,236 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:13,237 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:13,239 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:13,244 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:13,245 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:13,245 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:25:13,276 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:25:13,277 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:25:13,278 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:25:13,282 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:25:13,283 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:25:13,284 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:25:13,285 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:25:13,287 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:25:13,287 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:25:13,288 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:25:13,330 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:25:13,583 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:25:13,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:13 WrapperNode [2021-11-19 13:25:13,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:25:13,586 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:25:13,586 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:25:13,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:25:13,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:13" (1/1) ... [2021-11-19 13:25:13,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:13" (1/1) ... [2021-11-19 13:25:13,768 INFO L137 Inliner]: procedures = 614, calls = 629, calls flagged for inlining = 39, calls inlined = 6, statements flattened = 137 [2021-11-19 13:25:13,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:25:13,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:25:13,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:25:13,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:25:13,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:13" (1/1) ... [2021-11-19 13:25:13,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:13" (1/1) ... [2021-11-19 13:25:13,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:13" (1/1) ... [2021-11-19 13:25:13,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:13" (1/1) ... [2021-11-19 13:25:13,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:13" (1/1) ... [2021-11-19 13:25:13,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:13" (1/1) ... [2021-11-19 13:25:13,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:13" (1/1) ... [2021-11-19 13:25:13,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:25:13,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:25:13,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:25:13,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:25:13,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:13" (1/1) ... [2021-11-19 13:25:13,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:25:13,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:25:13,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:25:13,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:25:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:25:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:25:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 13:25:13,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 13:25:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:25:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:25:13,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:25:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:25:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 13:25:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 13:25:13,973 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 13:25:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:25:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 13:25:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 13:25:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 13:25:13,974 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 13:25:14,271 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:25:14,273 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:25:14,773 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:25:14,785 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:25:14,786 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-19 13:25:14,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:25:14 BoogieIcfgContainer [2021-11-19 13:25:14,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:25:14,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:25:14,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:25:14,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:25:14,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:25:11" (1/3) ... [2021-11-19 13:25:14,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6801ef40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:25:14, skipping insertion in model container [2021-11-19 13:25:14,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:13" (2/3) ... [2021-11-19 13:25:14,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6801ef40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:25:14, skipping insertion in model container [2021-11-19 13:25:14,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:25:14" (3/3) ... [2021-11-19 13:25:14,807 INFO L111 eAbstractionObserver]: Analyzing ICFG memcpy_using_uint64_harness.i [2021-11-19 13:25:14,813 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:25:14,814 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:25:14,864 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:25:14,872 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 13:25:14,872 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:25:14,889 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 48 states have internal predecessors, (64), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-19 13:25:14,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 13:25:14,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:25:14,898 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:25:14,899 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:25:14,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:25:14,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1463681059, now seen corresponding path program 1 times [2021-11-19 13:25:14,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:25:14,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631154088] [2021-11-19 13:25:14,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:14,922 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:25:14,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:25:14,926 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:25:14,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:25:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:15,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 13:25:15,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:15,480 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-19 13:25:15,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:15,717 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-19 13:25:15,718 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:25:15,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631154088] [2021-11-19 13:25:15,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631154088] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:25:15,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:25:15,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-19 13:25:15,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516718588] [2021-11-19 13:25:15,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:25:15,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 13:25:15,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:25:15,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 13:25:15,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:25:15,791 INFO L87 Difference]: Start difference. First operand has 63 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 48 states have internal predecessors, (64), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 13:25:15,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:25:15,827 INFO L93 Difference]: Finished difference Result 122 states and 176 transitions. [2021-11-19 13:25:15,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 13:25:15,836 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2021-11-19 13:25:15,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:25:15,846 INFO L225 Difference]: With dead ends: 122 [2021-11-19 13:25:15,846 INFO L226 Difference]: Without dead ends: 57 [2021-11-19 13:25:15,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 130 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 13:25:15,858 INFO L933 BasicCegarLoop]: 81 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, 81 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 13:25:15,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:25:15,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-19 13:25:15,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-19 13:25:15,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 43 states have internal predecessors, (53), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 13:25:15,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2021-11-19 13:25:15,911 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 66 [2021-11-19 13:25:15,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:25:15,912 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2021-11-19 13:25:15,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 13:25:15,912 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2021-11-19 13:25:15,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 13:25:15,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:25:15,916 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:25:15,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 13:25:16,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:25:16,131 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:25:16,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:25:16,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1147031271, now seen corresponding path program 1 times [2021-11-19 13:25:16,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:25:16,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586822823] [2021-11-19 13:25:16,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:16,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:25:16,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:25:16,135 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:25:16,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:25:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:16,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:25:16,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:16,480 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:16,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:16,652 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:16,652 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:25:16,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586822823] [2021-11-19 13:25:16,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586822823] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:25:16,653 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:25:16,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:25:16,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158029804] [2021-11-19 13:25:16,653 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:25:16,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:25:16,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:25:16,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:25:16,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:25:16,656 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-19 13:25:16,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:25:16,698 INFO L93 Difference]: Finished difference Result 113 states and 148 transitions. [2021-11-19 13:25:16,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:25:16,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 66 [2021-11-19 13:25:16,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:25:16,700 INFO L225 Difference]: With dead ends: 113 [2021-11-19 13:25:16,701 INFO L226 Difference]: Without dead ends: 60 [2021-11-19 13:25:16,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:25:16,703 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 3 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:25:16,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 142 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:25:16,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-19 13:25:16,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-11-19 13:25:16,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 46 states have internal predecessors, (56), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 13:25:16,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2021-11-19 13:25:16,722 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 66 [2021-11-19 13:25:16,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:25:16,723 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2021-11-19 13:25:16,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-19 13:25:16,723 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2021-11-19 13:25:16,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-19 13:25:16,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:25:16,728 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:25:16,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:16,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:25:16,944 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:25:16,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:25:16,945 INFO L85 PathProgramCache]: Analyzing trace with hash 199368683, now seen corresponding path program 1 times [2021-11-19 13:25:16,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:25:16,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [653584979] [2021-11-19 13:25:16,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:16,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:25:16,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:25:16,948 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:25:16,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:25:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:17,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:25:17,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:17,323 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:17,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:17,516 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:17,516 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:25:17,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [653584979] [2021-11-19 13:25:17,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [653584979] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:17,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1667977182] [2021-11-19 13:25:17,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:17,517 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:25:17,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:25:17,519 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:25:17,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-19 13:25:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:17,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:25:17,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:18,020 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:18,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:18,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1667977182] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:18,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107445441] [2021-11-19 13:25:18,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:18,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:25:18,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:25:18,172 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:25:18,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 13:25:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:18,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 13:25:18,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 13:25:18,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:19,461 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 13:25:19,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107445441] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:25:19,462 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-19 13:25:19,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [5, 5, 5, 5] total 21 [2021-11-19 13:25:19,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039118067] [2021-11-19 13:25:19,463 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:25:19,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 13:25:19,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:25:19,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 13:25:19,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:25:19,465 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 6 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-19 13:25:20,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:25:20,454 INFO L93 Difference]: Finished difference Result 183 states and 238 transitions. [2021-11-19 13:25:20,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 13:25:20,455 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 6 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 70 [2021-11-19 13:25:20,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:25:20,458 INFO L225 Difference]: With dead ends: 183 [2021-11-19 13:25:20,458 INFO L226 Difference]: Without dead ends: 148 [2021-11-19 13:25:20,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=143, Invalid=669, Unknown=0, NotChecked=0, Total=812 [2021-11-19 13:25:20,461 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 211 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:25:20,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 739 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 224 Invalid, 0 Unknown, 81 Unchecked, 0.6s Time] [2021-11-19 13:25:20,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-19 13:25:20,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 72. [2021-11-19 13:25:20,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 55 states have internal predecessors, (68), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 13:25:20,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2021-11-19 13:25:20,480 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 70 [2021-11-19 13:25:20,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:25:20,481 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2021-11-19 13:25:20,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 6 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-19 13:25:20,481 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2021-11-19 13:25:20,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-19 13:25:20,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:25:20,483 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:25:20,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:20,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:20,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 13:25:21,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:25:21,088 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:25:21,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:25:21,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1489575059, now seen corresponding path program 1 times [2021-11-19 13:25:21,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:25:21,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237260347] [2021-11-19 13:25:21,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:21,097 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:25:21,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:25:21,099 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:25:21,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:25:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:21,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:25:21,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:21,439 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:21,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:21,602 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:21,602 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:25:21,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237260347] [2021-11-19 13:25:21,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237260347] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:21,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [996880796] [2021-11-19 13:25:21,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:21,603 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:25:21,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:25:21,604 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:25:21,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-19 13:25:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:21,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:25:21,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:22,010 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:22,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:22,175 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:22,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [996880796] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:22,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564271254] [2021-11-19 13:25:22,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:22,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:25:22,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:25:22,177 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:25:22,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-19 13:25:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:22,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 13:25:22,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:22,910 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 13:25:22,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:23,370 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 13:25:23,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564271254] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:25:23,370 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-19 13:25:23,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [5, 5, 5, 5] total 21 [2021-11-19 13:25:23,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479367404] [2021-11-19 13:25:23,371 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:25:23,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 13:25:23,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:25:23,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 13:25:23,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:25:23,373 INFO L87 Difference]: Start difference. First operand 72 states and 95 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 6 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-19 13:25:24,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:25:24,431 INFO L93 Difference]: Finished difference Result 183 states and 237 transitions. [2021-11-19 13:25:24,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 13:25:24,432 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 6 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 70 [2021-11-19 13:25:24,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:25:24,434 INFO L225 Difference]: With dead ends: 183 [2021-11-19 13:25:24,434 INFO L226 Difference]: Without dead ends: 150 [2021-11-19 13:25:24,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=143, Invalid=669, Unknown=0, NotChecked=0, Total=812 [2021-11-19 13:25:24,437 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 205 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:25:24,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 789 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 261 Invalid, 0 Unknown, 77 Unchecked, 0.6s Time] [2021-11-19 13:25:24,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-19 13:25:24,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 76. [2021-11-19 13:25:24,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 59 states have internal predecessors, (73), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 13:25:24,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 100 transitions. [2021-11-19 13:25:24,451 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 100 transitions. Word has length 70 [2021-11-19 13:25:24,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:25:24,452 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 100 transitions. [2021-11-19 13:25:24,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 6 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-19 13:25:24,453 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 100 transitions. [2021-11-19 13:25:24,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-19 13:25:24,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:25:24,455 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:25:24,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:24,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2021-11-19 13:25:24,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-19 13:25:25,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:25:25,069 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:25:25,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:25:25,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1217044335, now seen corresponding path program 1 times [2021-11-19 13:25:25,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:25:25,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462118397] [2021-11-19 13:25:25,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:25,071 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:25:25,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:25:25,072 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:25:25,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:25:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:25,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:25:25,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:25,393 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:25,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:25,575 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:25,575 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:25:25,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462118397] [2021-11-19 13:25:25,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462118397] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:25,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [544161607] [2021-11-19 13:25:25,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:25,576 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:25:25,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:25:25,577 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:25:25,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-19 13:25:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:25,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:25:25,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:26,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:26,207 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:26,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [544161607] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:26,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459629720] [2021-11-19 13:25:26,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:26,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:25:26,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:25:26,211 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:25:26,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-19 13:25:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:26,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 13:25:26,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:26,930 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 13:25:26,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:27,396 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 13:25:27,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459629720] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:25:27,396 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-19 13:25:27,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [5, 5, 5, 5] total 21 [2021-11-19 13:25:27,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031489167] [2021-11-19 13:25:27,397 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:25:27,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 13:25:27,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:25:27,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 13:25:27,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:25:27,399 INFO L87 Difference]: Start difference. First operand 76 states and 100 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 6 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-19 13:25:28,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:25:28,228 INFO L93 Difference]: Finished difference Result 184 states and 237 transitions. [2021-11-19 13:25:28,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 13:25:28,230 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 6 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 70 [2021-11-19 13:25:28,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:25:28,232 INFO L225 Difference]: With dead ends: 184 [2021-11-19 13:25:28,232 INFO L226 Difference]: Without dead ends: 153 [2021-11-19 13:25:28,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2021-11-19 13:25:28,234 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 157 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:25:28,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 920 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 185 Invalid, 0 Unknown, 109 Unchecked, 0.5s Time] [2021-11-19 13:25:28,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-19 13:25:28,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 80. [2021-11-19 13:25:28,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 62 states have (on average 1.2580645161290323) internal successors, (78), 63 states have internal predecessors, (78), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 13:25:28,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 105 transitions. [2021-11-19 13:25:28,248 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 105 transitions. Word has length 70 [2021-11-19 13:25:28,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:25:28,249 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 105 transitions. [2021-11-19 13:25:28,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 6 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-19 13:25:28,249 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 105 transitions. [2021-11-19 13:25:28,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-19 13:25:28,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:25:28,251 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:25:28,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:28,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2021-11-19 13:25:28,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:28,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:25:28,867 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:25:28,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:25:28,868 INFO L85 PathProgramCache]: Analyzing trace with hash -62819343, now seen corresponding path program 1 times [2021-11-19 13:25:28,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:25:28,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104002829] [2021-11-19 13:25:28,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:28,869 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:25:28,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:25:28,870 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:25:28,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 13:25:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:29,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:25:29,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:29,181 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:29,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:29,362 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:29,362 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:25:29,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104002829] [2021-11-19 13:25:29,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104002829] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:29,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1985798975] [2021-11-19 13:25:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:29,363 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:25:29,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:25:29,364 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:25:29,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-19 13:25:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:29,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:25:29,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:29,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:29,940 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:29,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1985798975] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:29,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129909941] [2021-11-19 13:25:29,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:29,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:25:29,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:25:29,949 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:25:29,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-19 13:25:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:30,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 13:25:30,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:30,690 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 13:25:30,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:31,107 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 13:25:31,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129909941] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:25:31,108 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-19 13:25:31,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [5, 5, 5, 5] total 21 [2021-11-19 13:25:31,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982014573] [2021-11-19 13:25:31,108 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:25:31,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 13:25:31,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:25:31,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 13:25:31,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:25:31,110 INFO L87 Difference]: Start difference. First operand 80 states and 105 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 6 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-19 13:25:31,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:25:31,946 INFO L93 Difference]: Finished difference Result 184 states and 236 transitions. [2021-11-19 13:25:31,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 13:25:31,948 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 6 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 70 [2021-11-19 13:25:31,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:25:31,949 INFO L225 Difference]: With dead ends: 184 [2021-11-19 13:25:31,950 INFO L226 Difference]: Without dead ends: 155 [2021-11-19 13:25:31,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2021-11-19 13:25:31,951 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 133 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:25:31,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 868 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 228 Invalid, 0 Unknown, 64 Unchecked, 0.5s Time] [2021-11-19 13:25:31,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-19 13:25:31,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 84. [2021-11-19 13:25:31,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 67 states have internal predecessors, (83), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 13:25:31,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 110 transitions. [2021-11-19 13:25:31,965 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 110 transitions. Word has length 70 [2021-11-19 13:25:31,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:25:31,966 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 110 transitions. [2021-11-19 13:25:31,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 6 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-19 13:25:31,966 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 110 transitions. [2021-11-19 13:25:31,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-19 13:25:31,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:25:31,968 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:25:31,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:32,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:32,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:32,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:25:32,575 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:25:32,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:25:32,575 INFO L85 PathProgramCache]: Analyzing trace with hash -649625357, now seen corresponding path program 1 times [2021-11-19 13:25:32,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:25:32,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029433649] [2021-11-19 13:25:32,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:32,576 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:25:32,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:25:32,577 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:25:32,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 13:25:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:32,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:25:32,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:32,872 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:32,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:33,041 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:33,042 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:25:33,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029433649] [2021-11-19 13:25:33,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029433649] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:33,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [299100878] [2021-11-19 13:25:33,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:33,043 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:25:33,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:25:33,046 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:25:33,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-19 13:25:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:33,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:25:33,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:33,407 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:33,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:33,558 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:33,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [299100878] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:33,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3610857] [2021-11-19 13:25:33,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:33,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:25:33,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:25:33,567 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:25:33,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-19 13:25:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:33,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 13:25:33,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:34,196 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 13:25:34,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:34,582 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 13:25:34,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3610857] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:25:34,582 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-19 13:25:34,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [5, 5, 5, 5] total 21 [2021-11-19 13:25:34,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867567591] [2021-11-19 13:25:34,583 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:25:34,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 13:25:34,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:25:34,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 13:25:34,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:25:34,585 INFO L87 Difference]: Start difference. First operand 84 states and 110 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 6 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-19 13:25:35,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:25:35,462 INFO L93 Difference]: Finished difference Result 183 states and 234 transitions. [2021-11-19 13:25:35,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 13:25:35,463 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 6 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 70 [2021-11-19 13:25:35,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:25:35,465 INFO L225 Difference]: With dead ends: 183 [2021-11-19 13:25:35,465 INFO L226 Difference]: Without dead ends: 156 [2021-11-19 13:25:35,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=143, Invalid=669, Unknown=0, NotChecked=0, Total=812 [2021-11-19 13:25:35,467 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 240 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:25:35,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 645 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 211 Invalid, 0 Unknown, 85 Unchecked, 0.5s Time] [2021-11-19 13:25:35,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-19 13:25:35,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 88. [2021-11-19 13:25:35,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 71 states have internal predecessors, (88), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 13:25:35,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 115 transitions. [2021-11-19 13:25:35,506 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 115 transitions. Word has length 70 [2021-11-19 13:25:35,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:25:35,507 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 115 transitions. [2021-11-19 13:25:35,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 6 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-19 13:25:35,508 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 115 transitions. [2021-11-19 13:25:35,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-19 13:25:35,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:25:35,518 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:25:35,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:35,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:35,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:36,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:25:36,136 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:25:36,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:25:36,136 INFO L85 PathProgramCache]: Analyzing trace with hash 51439221, now seen corresponding path program 1 times [2021-11-19 13:25:36,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:25:36,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48674854] [2021-11-19 13:25:36,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:36,137 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:25:36,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:25:36,138 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:25:36,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 13:25:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:36,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:25:36,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:36,444 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:36,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:36,623 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:36,623 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:25:36,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48674854] [2021-11-19 13:25:36,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48674854] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:36,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1620303702] [2021-11-19 13:25:36,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:36,624 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:25:36,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:25:36,625 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:25:36,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-19 13:25:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:36,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:25:36,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:36,976 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:36,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:37,109 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:37,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1620303702] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:37,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916978591] [2021-11-19 13:25:37,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:37,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:25:37,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:25:37,112 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:25:37,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-19 13:25:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:37,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 13:25:37,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 13:25:37,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:38,200 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 13:25:38,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916978591] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:25:38,201 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-19 13:25:38,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [5, 5, 5, 5] total 21 [2021-11-19 13:25:38,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007536741] [2021-11-19 13:25:38,201 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:25:38,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 13:25:38,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:25:38,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 13:25:38,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:25:38,203 INFO L87 Difference]: Start difference. First operand 88 states and 115 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 6 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-19 13:25:38,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:25:38,670 INFO L93 Difference]: Finished difference Result 164 states and 207 transitions. [2021-11-19 13:25:38,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:25:38,671 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 6 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 70 [2021-11-19 13:25:38,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:25:38,673 INFO L225 Difference]: With dead ends: 164 [2021-11-19 13:25:38,673 INFO L226 Difference]: Without dead ends: 139 [2021-11-19 13:25:38,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-11-19 13:25:38,675 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 56 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:25:38,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 738 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 177 Invalid, 0 Unknown, 38 Unchecked, 0.3s Time] [2021-11-19 13:25:38,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-19 13:25:38,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 117. [2021-11-19 13:25:38,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 96 states have (on average 1.25) internal successors, (120), 97 states have internal predecessors, (120), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 13:25:38,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 153 transitions. [2021-11-19 13:25:38,688 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 153 transitions. Word has length 70 [2021-11-19 13:25:38,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:25:38,689 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 153 transitions. [2021-11-19 13:25:38,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 6 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-19 13:25:38,689 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 153 transitions. [2021-11-19 13:25:38,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-19 13:25:38,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:25:38,691 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:25:38,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:38,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:39,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:39,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:25:39,299 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:25:39,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:25:39,300 INFO L85 PathProgramCache]: Analyzing trace with hash 731497591, now seen corresponding path program 1 times [2021-11-19 13:25:39,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:25:39,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419523541] [2021-11-19 13:25:39,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:39,301 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:25:39,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:25:39,302 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:25:39,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 13:25:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:39,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:25:39,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:39,572 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:39,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:39,729 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:39,729 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:25:39,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419523541] [2021-11-19 13:25:39,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419523541] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:39,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [372116964] [2021-11-19 13:25:39,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:39,730 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:25:39,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:25:39,730 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:25:39,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-19 13:25:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:39,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:25:39,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:40,081 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:40,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:40,208 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:40,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [372116964] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:40,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636128012] [2021-11-19 13:25:40,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:40,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:25:40,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:25:40,210 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:25:40,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-19 13:25:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:40,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:25:40,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:40,450 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:40,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:40,596 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 13:25:40,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636128012] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:40,597 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:25:40,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-11-19 13:25:40,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551242042] [2021-11-19 13:25:40,606 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:25:40,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:25:40,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:25:40,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:25:40,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:25:40,607 INFO L87 Difference]: Start difference. First operand 117 states and 153 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-19 13:25:40,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:25:40,733 INFO L93 Difference]: Finished difference Result 235 states and 310 transitions. [2021-11-19 13:25:40,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:25:40,735 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 70 [2021-11-19 13:25:40,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:25:40,737 INFO L225 Difference]: With dead ends: 235 [2021-11-19 13:25:40,738 INFO L226 Difference]: Without dead ends: 125 [2021-11-19 13:25:40,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:25:40,740 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 6 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:25:40,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 352 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:25:40,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-19 13:25:40,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-11-19 13:25:40,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 104 states have (on average 1.2307692307692308) internal successors, (128), 105 states have internal predecessors, (128), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 13:25:40,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 161 transitions. [2021-11-19 13:25:40,752 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 161 transitions. Word has length 70 [2021-11-19 13:25:40,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:25:40,753 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 161 transitions. [2021-11-19 13:25:40,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-19 13:25:40,753 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 161 transitions. [2021-11-19 13:25:40,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-19 13:25:40,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:25:40,755 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:25:40,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:40,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-11-19 13:25:41,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2021-11-19 13:25:41,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:25:41,370 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:25:41,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:25:41,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1086717825, now seen corresponding path program 2 times [2021-11-19 13:25:41,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:25:41,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572961571] [2021-11-19 13:25:41,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:25:41,371 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:25:41,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:25:41,372 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:25:41,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 13:25:41,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 13:25:41,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:25:41,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:25:41,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:41,884 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-19 13:25:41,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:42,322 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-19 13:25:42,322 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:25:42,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572961571] [2021-11-19 13:25:42,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572961571] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:25:42,322 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:25:42,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-19 13:25:42,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285400389] [2021-11-19 13:25:42,323 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:25:42,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:25:42,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:25:42,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:25:42,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:25:42,324 INFO L87 Difference]: Start difference. First operand 125 states and 161 transitions. Second operand has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-19 13:25:42,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:25:42,428 INFO L93 Difference]: Finished difference Result 131 states and 166 transitions. [2021-11-19 13:25:42,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:25:42,429 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 78 [2021-11-19 13:25:42,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:25:42,430 INFO L225 Difference]: With dead ends: 131 [2021-11-19 13:25:42,431 INFO L226 Difference]: Without dead ends: 127 [2021-11-19 13:25:42,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:25:42,432 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 29 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:25:42,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 279 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:25:42,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-19 13:25:42,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-11-19 13:25:42,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 106 states have (on average 1.2169811320754718) internal successors, (129), 106 states have internal predecessors, (129), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 13:25:42,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 162 transitions. [2021-11-19 13:25:42,444 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 162 transitions. Word has length 78 [2021-11-19 13:25:42,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:25:42,444 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 162 transitions. [2021-11-19 13:25:42,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-19 13:25:42,445 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 162 transitions. [2021-11-19 13:25:42,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 13:25:42,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:25:42,446 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:25:42,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:42,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:25:42,660 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:25:42,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:25:42,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1183676692, now seen corresponding path program 1 times [2021-11-19 13:25:42,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:25:42,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [465752545] [2021-11-19 13:25:42,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:42,662 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:25:42,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:25:42,663 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:25:42,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-19 13:25:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:42,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:25:42,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:43,030 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 13:25:43,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:43,427 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-19 13:25:43,428 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:25:43,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [465752545] [2021-11-19 13:25:43,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [465752545] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:43,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1903388686] [2021-11-19 13:25:43,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:43,428 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:25:43,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:25:43,435 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:25:43,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-19 13:25:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:43,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:25:43,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:44,054 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-19 13:25:44,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:44,446 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-19 13:25:44,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1903388686] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:25:44,447 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:25:44,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [9, 9] total 23 [2021-11-19 13:25:44,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153056975] [2021-11-19 13:25:44,447 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:25:44,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:25:44,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:25:44,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:25:44,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:25:44,449 INFO L87 Difference]: Start difference. First operand 127 states and 162 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-19 13:25:44,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:25:44,737 INFO L93 Difference]: Finished difference Result 152 states and 189 transitions. [2021-11-19 13:25:44,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:25:44,739 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 95 [2021-11-19 13:25:44,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:25:44,740 INFO L225 Difference]: With dead ends: 152 [2021-11-19 13:25:44,740 INFO L226 Difference]: Without dead ends: 98 [2021-11-19 13:25:44,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 354 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2021-11-19 13:25:44,742 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 194 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:25:44,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 237 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 38 Invalid, 0 Unknown, 6 Unchecked, 0.2s Time] [2021-11-19 13:25:44,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-19 13:25:44,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-11-19 13:25:44,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 80 states have (on average 1.2) internal successors, (96), 80 states have internal predecessors, (96), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 13:25:44,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 123 transitions. [2021-11-19 13:25:44,752 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 123 transitions. Word has length 95 [2021-11-19 13:25:44,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:25:44,752 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 123 transitions. [2021-11-19 13:25:44,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-19 13:25:44,753 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 123 transitions. [2021-11-19 13:25:44,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-19 13:25:44,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:25:44,754 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:25:44,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:44,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-11-19 13:25:45,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:25:45,157 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:25:45,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:25:45,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1629378004, now seen corresponding path program 1 times [2021-11-19 13:25:45,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:25:45,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286419964] [2021-11-19 13:25:45,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:45,159 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:25:45,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:25:45,160 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:25:45,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-19 13:25:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:45,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:25:45,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:45,595 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-19 13:25:45,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:45,966 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-19 13:25:45,967 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:25:45,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286419964] [2021-11-19 13:25:45,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286419964] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:45,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1905150737] [2021-11-19 13:25:45,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:45,968 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:25:45,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:25:45,987 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:25:45,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-19 13:25:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:46,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:25:46,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:46,521 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-19 13:25:46,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:46,781 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-19 13:25:46,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1905150737] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:46,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38205122] [2021-11-19 13:25:46,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:46,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:25:46,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:25:46,783 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:25:46,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-19 13:25:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:46,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:25:46,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:47,122 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-19 13:25:47,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:47,338 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-19 13:25:47,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38205122] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:47,339 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:25:47,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 16 [2021-11-19 13:25:47,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25310683] [2021-11-19 13:25:47,339 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:25:47,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 13:25:47,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:25:47,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 13:25:47,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:25:47,341 INFO L87 Difference]: Start difference. First operand 98 states and 123 transitions. Second operand has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-11-19 13:25:47,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:25:47,855 INFO L93 Difference]: Finished difference Result 197 states and 254 transitions. [2021-11-19 13:25:47,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 13:25:47,858 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 97 [2021-11-19 13:25:47,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:25:47,860 INFO L225 Difference]: With dead ends: 197 [2021-11-19 13:25:47,860 INFO L226 Difference]: Without dead ends: 114 [2021-11-19 13:25:47,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 562 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-11-19 13:25:47,861 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 14 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:25:47,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 702 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:25:47,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-19 13:25:47,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-11-19 13:25:47,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 96 states have (on average 1.1666666666666667) internal successors, (112), 96 states have internal predecessors, (112), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 13:25:47,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 139 transitions. [2021-11-19 13:25:47,872 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 139 transitions. Word has length 97 [2021-11-19 13:25:47,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:25:47,872 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 139 transitions. [2021-11-19 13:25:47,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-11-19 13:25:47,873 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 139 transitions. [2021-11-19 13:25:47,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 13:25:47,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:25:47,875 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:25:47,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:48,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-11-19 13:25:48,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-11-19 13:25:48,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:25:48,479 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:25:48,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:25:48,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1230035908, now seen corresponding path program 2 times [2021-11-19 13:25:48,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:25:48,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676527966] [2021-11-19 13:25:48,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:25:48,480 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:25:48,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:25:48,481 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:25:48,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-19 13:25:48,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:25:48,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:25:48,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 13:25:48,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:49,086 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-19 13:25:49,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:50,003 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 2 proven. 196 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-19 13:25:50,003 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:25:50,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676527966] [2021-11-19 13:25:50,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676527966] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:50,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1528575731] [2021-11-19 13:25:50,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:25:50,004 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:25:50,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:25:50,007 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:25:50,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-11-19 13:25:50,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:25:50,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:25:50,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 13:25:50,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:50,675 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-19 13:25:50,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:50,947 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 2 proven. 196 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-19 13:25:50,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1528575731] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:50,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041724682] [2021-11-19 13:25:50,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:25:50,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:25:50,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:25:50,948 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:25:50,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-19 13:25:51,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:25:51,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:25:51,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 13:25:51,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:51,411 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-19 13:25:51,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:51,683 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 2 proven. 196 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-19 13:25:51,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041724682] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:51,683 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:25:51,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17, 17, 17, 17] total 32 [2021-11-19 13:25:51,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581888785] [2021-11-19 13:25:51,684 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:25:51,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-19 13:25:51,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:25:51,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-19 13:25:51,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-11-19 13:25:51,686 INFO L87 Difference]: Start difference. First operand 114 states and 139 transitions. Second operand has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-11-19 13:25:54,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:25:54,268 INFO L93 Difference]: Finished difference Result 229 states and 294 transitions. [2021-11-19 13:25:54,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-19 13:25:54,270 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 113 [2021-11-19 13:25:54,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:25:54,271 INFO L225 Difference]: With dead ends: 229 [2021-11-19 13:25:54,271 INFO L226 Difference]: Without dead ends: 146 [2021-11-19 13:25:54,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 642 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-11-19 13:25:54,273 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 31 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:25:54,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 1122 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 13:25:54,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-19 13:25:54,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-11-19 13:25:54,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 128 states have (on average 1.125) internal successors, (144), 128 states have internal predecessors, (144), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 13:25:54,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2021-11-19 13:25:54,285 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 113 [2021-11-19 13:25:54,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:25:54,286 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2021-11-19 13:25:54,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-11-19 13:25:54,286 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2021-11-19 13:25:54,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-19 13:25:54,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:25:54,289 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:25:54,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:54,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2021-11-19 13:25:54,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:54,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:25:54,907 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:25:54,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:25:54,907 INFO L85 PathProgramCache]: Analyzing trace with hash 473450404, now seen corresponding path program 3 times [2021-11-19 13:25:54,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:25:54,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307245437] [2021-11-19 13:25:54,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:25:54,908 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:25:54,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:25:54,909 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:25:54,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-19 13:25:55,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-19 13:25:55,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:25:55,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-19 13:25:55,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:55,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 9 [2021-11-19 13:25:56,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-19 13:25:57,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2021-11-19 13:25:59,670 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_1| (_ BitVec 64)) (|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_19| (_ BitVec 64))) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_1|) (_ bv0 64)) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_19|) (_ bv0 64))) (not (= |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_19| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_1|)))) is different from true [2021-11-19 13:26:01,961 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_20| (_ BitVec 64)) (|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_2| (_ BitVec 64))) (and (not (= |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_20| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_2|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_2|) (_ bv0 64)) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_20|) (_ bv0 64))))) is different from true [2021-11-19 13:26:04,232 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_21| (_ BitVec 64)) (|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_3| (_ BitVec 64))) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_21|) (_ bv0 64)) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_3|) (_ bv0 64))) (not (= |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_21| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_3|)))) is different from true [2021-11-19 13:26:05,703 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-11-19 13:26:05,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 29 [2021-11-19 13:26:08,518 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_2| (_ BitVec 64)) (|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_2| (_ BitVec 64)) (|ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| (_ BitVec 64))) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_2|) (_ bv0 64)))) (and (not (= |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_2| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|)) (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_2|) (_ bv0 64))) (= .cse0 (select (select |c_#memory_int| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|) (_ bv0 64)))))) is different from true [2021-11-19 13:26:10,979 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_3| (_ BitVec 64)) (|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_3| (_ BitVec 64)) (|ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| (_ BitVec 64))) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_3|) (_ bv0 64)))) (and (not (= |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_3| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_3|) (_ bv0 64)) .cse0) (= .cse0 (select (select |c_#memory_int| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|) (_ bv0 64)))))) is different from true [2021-11-19 13:26:13,440 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_4| (_ BitVec 64)) (|ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| (_ BitVec 64)) (|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_4| (_ BitVec 64))) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_4|) (_ bv0 64)))) (and (= .cse0 (select (select |c_#memory_int| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|) (_ bv0 64))) (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_4|) (_ bv0 64))) (not (= |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_4| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|))))) is different from true [2021-11-19 13:26:22,395 INFO L354 Elim1Store]: treesize reduction 90, result has 7.2 percent of original size [2021-11-19 13:26:22,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 50 treesize of output 32 [2021-11-19 13:26:22,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 55 proven. 10 refuted. 0 times theorem prover too weak. 915 trivial. 35 not checked. [2021-11-19 13:26:22,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:26:44,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 991 trivial. 0 not checked. [2021-11-19 13:26:44,873 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:26:44,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307245437] [2021-11-19 13:26:44,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307245437] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:26:44,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2075146869] [2021-11-19 13:26:44,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:26:44,874 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:26:44,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:26:44,875 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:26:44,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-11-19 13:26:45,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-19 13:26:45,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:26:45,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-19 13:26:45,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:26:45,405 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 13:26:45,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-19 13:26:47,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-19 13:26:48,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2021-11-19 13:26:51,205 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_32| (_ BitVec 64)) (|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_7| (_ BitVec 64))) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_7|) (_ bv0 64)) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_32|) (_ bv0 64))) (not (= |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_32| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_7|)))) is different from true [2021-11-19 13:26:53,668 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_8| (_ BitVec 64)) (|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_33| (_ BitVec 64))) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_8|) (_ bv0 64)) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_33|) (_ bv0 64))) (not (= |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_33| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_8|)))) is different from true [2021-11-19 13:26:56,145 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_9| (_ BitVec 64)) (|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_34| (_ BitVec 64))) (and (not (= |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_34| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_9|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_34|) (_ bv0 64)) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_9|) (_ bv0 64))))) is different from true [2021-11-19 13:26:58,601 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-19 13:26:58,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 33 [2021-11-19 13:27:02,508 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_8| (_ BitVec 64)) (|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_8| (_ BitVec 64)) (|ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| (_ BitVec 64))) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_8|) (_ bv0 64)))) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_8|) (_ bv0 64)) .cse0) (not (= |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_8| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|)) (= .cse0 (select (select |c_#memory_int| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|) (_ bv0 64))) (not (= |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_8| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_8|)) (not (= |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_8|))))) is different from true [2021-11-19 13:27:05,434 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_9| (_ BitVec 64)) (|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_9| (_ BitVec 64)) (|ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| (_ BitVec 64))) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_9|) (_ bv0 64)))) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_9|) (_ bv0 64)) .cse0) (not (= |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_9|)) (not (= |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_9| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|)) (= (select (select |c_#memory_int| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|) (_ bv0 64)) .cse0) (not (= |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_9| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_9|))))) is different from true [2021-11-19 13:27:08,264 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_10| (_ BitVec 64)) (|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_10| (_ BitVec 64)) (|ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| (_ BitVec 64))) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_10|) (_ bv0 64)))) (and (= .cse0 (select (select |c_#memory_int| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|) (_ bv0 64))) (not (= |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_10| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_10|)) (not (= |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_10| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|)) (not (= |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_10| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|)) (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_10|) (_ bv0 64)))))) is different from true [2021-11-19 13:27:22,058 INFO L354 Elim1Store]: treesize reduction 90, result has 7.2 percent of original size [2021-11-19 13:27:22,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 48 [2021-11-19 13:27:22,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 924 trivial. 26 not checked. [2021-11-19 13:27:22,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:28:34,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 991 trivial. 0 not checked. [2021-11-19 13:28:34,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2075146869] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:28:34,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107386113] [2021-11-19 13:28:34,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:28:34,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:28:34,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:28:34,213 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:28:34,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-19 13:28:35,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-19 13:28:35,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:28:35,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-19 13:28:35,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:28:35,574 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 13:28:35,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-19 13:28:39,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2021-11-19 13:28:42,504 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_13| (_ BitVec 64)) (|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_45| (_ BitVec 64))) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_45|) (_ bv0 64)) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_13|) (_ bv0 64))) (not (= |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_45| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_13|)))) is different from true [2021-11-19 13:28:45,184 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_14| (_ BitVec 64)) (|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_46| (_ BitVec 64))) (and (not (= |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_46| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_14|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_46|) (_ bv0 64)) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_14|) (_ bv0 64))))) is different from true [2021-11-19 13:28:47,872 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_15| (_ BitVec 64)) (|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_47| (_ BitVec 64))) (and (not (= |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_47| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_15|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_15|) (_ bv0 64)) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_47|) (_ bv0 64))))) is different from true [2021-11-19 13:28:51,182 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-19 13:28:51,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 33 [2021-11-19 13:28:55,187 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_14| (_ BitVec 64)) (|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_14| (_ BitVec 64)) (|ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| (_ BitVec 64))) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_14|) (_ bv0 64)))) (and (= (select (select |c_#memory_int| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|) (_ bv0 64)) .cse0) (not (= |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_14| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_14|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_14|) (_ bv0 64)) .cse0) (not (= |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_14| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|)) (not (= |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_14| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|))))) is different from true [2021-11-19 13:28:58,130 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_15| (_ BitVec 64)) (|ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| (_ BitVec 64)) (|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_15| (_ BitVec 64))) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_15|) (_ bv0 64)))) (and (not (= |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_15| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|)) (not (= |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_15| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|)) (not (= |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_15| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_15|)) (= .cse0 (select (select |c_#memory_int| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|) (_ bv0 64))) (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_15|) (_ bv0 64)))))) is different from true [2021-11-19 13:29:01,002 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_16| (_ BitVec 64)) (|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_16| (_ BitVec 64)) (|ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| (_ BitVec 64))) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_16|) (_ bv0 64)))) (and (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_16|) (_ bv0 64))) (not (= |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_16| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|)) (= .cse0 (select (select |c_#memory_int| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|) (_ bv0 64))) (not (= |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_16| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|)) (not (= |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_16| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_16|))))) is different from true [2021-11-19 13:29:06,309 INFO L354 Elim1Store]: treesize reduction 90, result has 7.2 percent of original size [2021-11-19 13:29:06,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 48 [2021-11-19 13:29:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 55 proven. 69 refuted. 0 times theorem prover too weak. 856 trivial. 35 not checked. [2021-11-19 13:29:06,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:05,877 INFO L354 Elim1Store]: treesize reduction 86, result has 52.0 percent of original size [2021-11-19 13:30:05,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 471 treesize of output 351 [2021-11-19 13:30:06,178 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:30:06,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 407 treesize of output 443 [2021-11-19 13:30:07,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 4 [2021-11-19 13:30:11,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 8 [2021-11-19 13:30:12,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 8 [2021-11-19 13:30:16,906 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:30:16,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2021-11-19 13:30:18,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 8 [2021-11-19 13:30:18,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 8 [2021-11-19 13:32:13,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 33 treesize of output 25 [2021-11-19 13:32:14,504 INFO L354 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2021-11-19 13:32:14,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-19 13:32:15,461 INFO L354 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2021-11-19 13:32:15,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-19 13:32:16,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 33 treesize of output 25 [2021-11-19 13:32:16,604 INFO L354 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2021-11-19 13:32:16,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-19 13:32:16,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 33 treesize of output 25 [2021-11-19 13:32:18,384 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-19 13:32:18,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 67 [2021-11-19 13:32:19,228 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-11-19 13:32:19,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 76 [2021-11-19 13:32:21,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 14 [2021-11-19 13:32:21,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 33 treesize of output 25 [2021-11-19 13:32:22,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 33 treesize of output 25 [2021-11-19 13:32:23,608 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-19 13:32:23,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 67 [2021-11-19 13:32:24,291 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-19 13:32:24,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 33 treesize of output 25 [2021-11-19 13:32:25,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 33 treesize of output 25 [2021-11-19 13:32:25,815 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-19 13:32:25,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 67 [2021-11-19 13:32:26,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 14 [2021-11-19 13:32:45,401 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-19 13:32:46,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:32:46,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 8 [2021-11-19 13:32:47,917 INFO L354 Elim1Store]: treesize reduction 28, result has 15.2 percent of original size [2021-11-19 13:32:47,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 26 [2021-11-19 13:32:49,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:32:49,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2021-11-19 13:32:49,342 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-19 13:32:49,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:32:49,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2021-11-19 13:32:49,899 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-19 13:32:51,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:32:51,467 INFO L244 Elim1Store]: Index analysis took 177 ms [2021-11-19 13:32:51,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2021-11-19 13:32:52,785 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-19 13:32:53,462 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-19 13:32:53,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:32:53,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 8 [2021-11-19 13:33:21,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:21,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 7 [2021-11-19 13:33:22,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:22,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 7 [2021-11-19 13:33:22,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:22,213 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-19 13:33:22,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-11-19 13:33:22,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:22,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 11 [2021-11-19 13:33:22,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:22,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 11 [2021-11-19 13:33:22,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:23,001 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-19 13:33:23,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 26 [2021-11-19 13:33:25,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:25,408 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:33:25,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 83 [2021-11-19 13:33:26,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:26,838 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-19 13:33:26,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 46 [2021-11-19 13:33:28,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:28,303 INFO L354 Elim1Store]: treesize reduction 10, result has 69.7 percent of original size [2021-11-19 13:33:28,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 65 [2021-11-19 13:33:32,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:32,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 7 [2021-11-19 13:33:32,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:33,025 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-19 13:33:33,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-11-19 13:33:33,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:33,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:33,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 1 [2021-11-19 13:33:38,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 8 [2021-11-19 13:33:38,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 8 [2021-11-19 13:33:39,273 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:33:39,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2021-11-19 13:33:39,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 8 [2021-11-19 13:33:40,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 4 [2021-11-19 13:33:40,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 4 [2021-11-19 13:33:40,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:40,722 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:33:40,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 243 treesize of output 235 [2021-11-19 13:33:46,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:46,645 INFO L354 Elim1Store]: treesize reduction 28, result has 15.2 percent of original size [2021-11-19 13:33:46,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 33 [2021-11-19 13:33:47,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:47,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:47,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-11-19 13:33:47,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:47,411 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-19 13:33:47,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 1 [2021-11-19 13:33:48,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:48,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:48,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-11-19 13:33:48,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:48,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 20 treesize of output 16 [2021-11-19 13:33:48,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:48,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 20 treesize of output 16 [2021-11-19 13:33:51,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:51,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 38 treesize of output 36 [2021-11-19 13:33:52,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:52,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:52,391 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:33:52,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 137 [2021-11-19 13:34:04,787 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:34:04,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 512 treesize of output 492 [2021-11-19 13:35:19,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 991 trivial. 0 not checked. [2021-11-19 13:35:19,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107386113] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:35:19,209 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:35:19,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 21, 26, 19, 30, 19] total 97 [2021-11-19 13:35:19,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853255163] [2021-11-19 13:35:19,209 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:35:19,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-11-19 13:35:19,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:35:19,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-11-19 13:35:19,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=5766, Unknown=72, NotChecked=3078, Total=9312 [2021-11-19 13:35:19,215 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand has 97 states, 96 states have (on average 2.2291666666666665) internal successors, (214), 87 states have internal predecessors, (214), 17 states have call successors, (47), 21 states have call predecessors, (47), 22 states have return successors, (47), 20 states have call predecessors, (47), 16 states have call successors, (47) [2021-11-19 13:35:31,868 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_memcpy_using_uint64_harness_~#s~1#1.base|)) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base|)) (.cse2 ((_ zero_extend 32) |c_ULTIMATE.start_memcpy_using_uint64_harness_~size~0#1|))) (and (= (_ bv0 64) |c_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.offset|) (= (select .cse0 |c_ULTIMATE.start_memcpy_using_uint64_harness_~#s~1#1.offset|) (select .cse1 |c_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.offset|)) (not (= |c_ULTIMATE.start_memcpy_using_uint64_harness_~#d2~0#1.base| |c_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base|)) (= |c_ULTIMATE.start_memcpy_impl_~n#1| .cse2) (not (= |c_ULTIMATE.start_memcpy_using_uint64_harness_~#s~1#1.base| |c_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base|)) (= (_ bv0 64) |c_ULTIMATE.start_memcpy_using_uint64_harness_~#d2~0#1.offset|) (= (_ bv1 64) |c_ULTIMATE.start_memcpy_impl_~i~3#1|) (= |c_ULTIMATE.start_memcpy_impl_~src#1.base| |c_ULTIMATE.start_memcpy_using_uint64_harness_~#s~1#1.base|) (forall ((|ULTIMATE.start_assert_bytes_match_~i~1#1| (_ BitVec 64)) (|ULTIMATE.start_memcpy_using_uint64_harness_~size~0#1| (_ BitVec 32))) (let ((.cse5 ((_ zero_extend 32) |ULTIMATE.start_memcpy_using_uint64_harness_~size~0#1|))) (or (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_memcpy_impl_~dst#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_memcpy_impl_~dst#1.base|) (bvadd |c_ULTIMATE.start_memcpy_impl_~dst#1.offset| |c_ULTIMATE.start_memcpy_impl_~i~3#1|) (select (select |c_#memory_int| |c_ULTIMATE.start_memcpy_impl_~src#1.base|) (bvadd |c_ULTIMATE.start_memcpy_impl_~i~3#1| |c_ULTIMATE.start_memcpy_impl_~src#1.offset|)))))) (let ((.cse3 (store (select .cse4 |c_ULTIMATE.start_memcpy_using_uint64_harness_~#d2~0#1.base|) |c_ULTIMATE.start_memcpy_using_uint64_harness_~#d2~0#1.offset| (select (select .cse4 |c_ULTIMATE.start_memcpy_using_uint64_harness_~#s~1#1.base|) |c_ULTIMATE.start_memcpy_using_uint64_harness_~#s~1#1.offset|)))) (= (select .cse3 (bvadd |c_ULTIMATE.start_memcpy_using_uint64_harness_~#d2~0#1.offset| |ULTIMATE.start_assert_bytes_match_~i~1#1|)) (select (select (store .cse4 |c_ULTIMATE.start_memcpy_using_uint64_harness_~#d2~0#1.base| .cse3) |c_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base|) (bvadd |c_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.offset| |ULTIMATE.start_assert_bytes_match_~i~1#1|))))) (not (= (bvand (_ bv7 64) .cse5) (_ bv1 64))) (not (bvult |ULTIMATE.start_assert_bytes_match_~i~1#1| .cse5)) (bvult (_ bv0 64) (bvlshr .cse5 (_ bv3 64)))))) (= |c_ULTIMATE.start_memcpy_impl_~dst#1.base| |c_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base|) (bvult |c_ULTIMATE.start_memcpy_using_uint64_harness_~size~0#1| (_ bv160 32)) (not (bvult (_ bv1 64) .cse2)) (= |c_ULTIMATE.start_memcpy_impl_~dst#1.offset| |c_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.offset|) (not (= |c_ULTIMATE.start_memcpy_using_uint64_harness_~#s~1#1.base| |c_ULTIMATE.start_memcpy_using_uint64_harness_~#d2~0#1.base|)) (= |c_ULTIMATE.start_memcpy_using_uint64_harness_~#s~1#1.offset| |c_ULTIMATE.start_memcpy_impl_~src#1.offset|) (= (select .cse0 (bvadd |c_ULTIMATE.start_memcpy_using_uint64_harness_~#s~1#1.offset| (_ bv18446744073709551615 64) |c_ULTIMATE.start_memcpy_impl_~i~3#1|)) (select .cse1 (bvadd (_ bv18446744073709551615 64) |c_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.offset| |c_ULTIMATE.start_memcpy_impl_~i~3#1|))) (= (_ bv0 64) |c_ULTIMATE.start_memcpy_using_uint64_harness_~#s~1#1.offset|) (or (not (= (bvand (_ bv7 64) .cse2) (_ bv1 64))) (forall ((|ULTIMATE.start_assert_bytes_match_~i~1#1| (_ BitVec 64)) (|ULTIMATE.start_memcpy_using_uint64_harness_~#d2~0#1.base| (_ BitVec 64))) (or (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_memcpy_impl_~dst#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_memcpy_impl_~dst#1.base|) (bvadd |c_ULTIMATE.start_memcpy_impl_~dst#1.offset| |c_ULTIMATE.start_memcpy_impl_~i~3#1|) (select (select |c_#memory_int| |c_ULTIMATE.start_memcpy_impl_~src#1.base|) (bvadd |c_ULTIMATE.start_memcpy_impl_~i~3#1| |c_ULTIMATE.start_memcpy_impl_~src#1.offset|)))))) (let ((.cse6 (store (select .cse7 |ULTIMATE.start_memcpy_using_uint64_harness_~#d2~0#1.base|) |c_ULTIMATE.start_memcpy_using_uint64_harness_~#d2~0#1.offset| (select (select .cse7 |c_ULTIMATE.start_memcpy_using_uint64_harness_~#s~1#1.base|) |c_ULTIMATE.start_memcpy_using_uint64_harness_~#s~1#1.offset|)))) (= (select .cse6 (bvadd |c_ULTIMATE.start_memcpy_using_uint64_harness_~#d2~0#1.offset| |ULTIMATE.start_assert_bytes_match_~i~1#1|)) (select (select (store .cse7 |ULTIMATE.start_memcpy_using_uint64_harness_~#d2~0#1.base| .cse6) |c_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base|) (bvadd |c_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.offset| |ULTIMATE.start_assert_bytes_match_~i~1#1|))))) (not (bvult |ULTIMATE.start_assert_bytes_match_~i~1#1| ((_ zero_extend 32) |c_ULTIMATE.start_memcpy_using_uint64_harness_~size~0#1|))))) (bvult (bvadd (_ bv1 64) |c_ULTIMATE.start_memcpy_impl_~i~3#1|) |c_ULTIMATE.start_memcpy_impl_~n#1|) (bvult (_ bv0 64) (bvlshr .cse2 (_ bv3 64)))))) is different from false [2021-11-19 13:36:46,501 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_32| (_ BitVec 64)) (|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_7| (_ BitVec 64))) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_7|) (_ bv0 64)) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_32|) (_ bv0 64))) (not (= |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_32| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_7|)))) (exists ((|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_1| (_ BitVec 64)) (|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_19| (_ BitVec 64))) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_1|) (_ bv0 64)) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_19|) (_ bv0 64))) (not (= |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_19| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_1|)))) (exists ((|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_13| (_ BitVec 64)) (|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_45| (_ BitVec 64))) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_45|) (_ bv0 64)) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_13|) (_ bv0 64))) (not (= |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_45| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_13|))))) is different from true [2021-11-19 13:38:36,450 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_32| (_ BitVec 64)) (|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_7| (_ BitVec 64))) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_7|) (_ bv0 64)) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_32|) (_ bv0 64))) (not (= |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_32| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_7|)))) (exists ((|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_13| (_ BitVec 64)) (|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_45| (_ BitVec 64))) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_45|) (_ bv0 64)) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_13|) (_ bv0 64))) (not (= |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_45| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_13|))))) is different from true [2021-11-19 13:38:51,472 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_14| (_ BitVec 64)) (|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_46| (_ BitVec 64))) (and (not (= |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_46| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_14|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_46|) (_ bv0 64)) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_14|) (_ bv0 64))))) (exists ((|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_20| (_ BitVec 64)) (|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_2| (_ BitVec 64))) (and (not (= |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_20| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_2|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_2|) (_ bv0 64)) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_20|) (_ bv0 64))))) (exists ((|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_8| (_ BitVec 64)) (|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_33| (_ BitVec 64))) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_8|) (_ bv0 64)) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_33|) (_ bv0 64))) (not (= |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_33| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_8|))))) is different from true [2021-11-19 13:38:55,554 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_14| (_ BitVec 64)) (|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_46| (_ BitVec 64))) (and (not (= |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_46| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_14|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_46|) (_ bv0 64)) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_14|) (_ bv0 64))))) (exists ((|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_8| (_ BitVec 64)) (|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_33| (_ BitVec 64))) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_8|) (_ bv0 64)) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_33|) (_ bv0 64))) (not (= |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_33| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_8|))))) is different from true [2021-11-19 13:38:59,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:38:59,127 INFO L93 Difference]: Finished difference Result 189 states and 222 transitions. [2021-11-19 13:38:59,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-19 13:38:59,128 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 2.2291666666666665) internal successors, (214), 87 states have internal predecessors, (214), 17 states have call successors, (47), 21 states have call predecessors, (47), 22 states have return successors, (47), 20 states have call predecessors, (47), 16 states have call successors, (47) Word has length 145 [2021-11-19 13:38:59,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:38:59,130 INFO L225 Difference]: With dead ends: 189 [2021-11-19 13:38:59,130 INFO L226 Difference]: Without dead ends: 176 [2021-11-19 13:38:59,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 747 SyntacticMatches, 30 SemanticMatches, 113 ConstructedPredicates, 23 IntricatePredicates, 0 DeprecatedPredicates, 3514 ImplicationChecksByTransitivity, 420.5s TimeCoverageRelationStatistics Valid=612, Invalid=7723, Unknown=129, NotChecked=4646, Total=13110 [2021-11-19 13:38:59,137 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 57 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 2423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2077 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:38:59,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 1226 Invalid, 2423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 327 Invalid, 0 Unknown, 2077 Unchecked, 1.6s Time] [2021-11-19 13:38:59,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-11-19 13:38:59,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 172. [2021-11-19 13:38:59,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 153 states have (on average 1.1437908496732025) internal successors, (175), 153 states have internal predecessors, (175), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 13:38:59,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 202 transitions. [2021-11-19 13:38:59,154 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 202 transitions. Word has length 145 [2021-11-19 13:38:59,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:38:59,155 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 202 transitions. [2021-11-19 13:38:59,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 96 states have (on average 2.2291666666666665) internal successors, (214), 87 states have internal predecessors, (214), 17 states have call successors, (47), 21 states have call predecessors, (47), 22 states have return successors, (47), 20 states have call predecessors, (47), 16 states have call successors, (47) [2021-11-19 13:38:59,156 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 202 transitions. [2021-11-19 13:38:59,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-19 13:38:59,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:38:59,158 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:38:59,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-19 13:38:59,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-19 13:38:59,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2021-11-19 13:38:59,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:38:59,783 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:38:59,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:38:59,784 INFO L85 PathProgramCache]: Analyzing trace with hash 535490018, now seen corresponding path program 1 times [2021-11-19 13:38:59,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:38:59,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172305337] [2021-11-19 13:38:59,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:38:59,784 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:38:59,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:38:59,785 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:38:59,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59798465-7877-49b2-a47b-6430e21142c0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-19 13:38:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:38:59,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-19 13:38:59,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:01,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-19 13:39:01,585 INFO L328 TraceCheckSpWp]: Computing backward predicates...