./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e695a989d07c92d21e9a41b59ca742c73a2098242f3cafca723523a39a7793cb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:32:09,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:32:09,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:32:09,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:32:09,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:32:09,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:32:09,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:32:09,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:32:09,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:32:09,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:32:09,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:32:09,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:32:09,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:32:09,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:32:09,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:32:09,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:32:09,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:32:09,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:32:09,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:32:09,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:32:09,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:32:09,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:32:09,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:32:09,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:32:09,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:32:09,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:32:09,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:32:09,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:32:09,912 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:32:09,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:32:09,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:32:09,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:32:09,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:32:09,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:32:09,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:32:09,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:32:09,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:32:09,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:32:09,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:32:09,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:32:09,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:32:09,923 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 22:32:09,966 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:32:09,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:32:09,968 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:32:09,968 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:32:09,969 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:32:09,969 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:32:09,969 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:32:09,969 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:32:09,975 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:32:09,976 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:32:09,977 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:32:09,977 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:32:09,977 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:32:09,977 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:32:09,977 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:32:09,978 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:32:09,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:32:09,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:32:09,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:32:09,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:32:09,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:32:09,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:32:09,979 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:32:09,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:32:09,980 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:32:09,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:32:09,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:32:09,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:32:09,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:32:09,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:32:09,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:32:09,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:32:09,982 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:32:09,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:32:09,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:32:09,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:32:09,982 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:32:09,982 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_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e695a989d07c92d21e9a41b59ca742c73a2098242f3cafca723523a39a7793cb [2021-11-12 22:32:10,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:32:10,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:32:10,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:32:10,282 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:32:10,283 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:32:10,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i [2021-11-12 22:32:10,349 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/data/3a7929c85/f64853b5d4e648f1a345762a0658723c/FLAGcc92fedcd [2021-11-12 22:32:11,109 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:32:11,110 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i [2021-11-12 22:32:11,181 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/data/3a7929c85/f64853b5d4e648f1a345762a0658723c/FLAGcc92fedcd [2021-11-12 22:32:11,663 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/data/3a7929c85/f64853b5d4e648f1a345762a0658723c [2021-11-12 22:32:11,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:32:11,667 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:32:11,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:32:11,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:32:11,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:32:11,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:32:11" (1/1) ... [2021-11-12 22:32:11,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3acdbffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:11, skipping insertion in model container [2021-11-12 22:32:11,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:32:11" (1/1) ... [2021-11-12 22:32:11,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:32:11,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:32:12,057 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i[4497,4510] [2021-11-12 22:32:12,065 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i[4557,4570] [2021-11-12 22:32:12,089 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:32:12,096 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:32:12,998 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:12,999 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:12,999 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:13,000 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:13,002 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:13,021 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:13,024 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:13,027 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:13,031 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:13,495 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:32:13,498 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:32:13,502 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:32:13,503 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:32:13,511 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:32:13,512 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:32:13,514 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:32:13,515 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:32:13,531 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:32:13,538 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:32:13,787 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:32:13,953 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:13,953 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:14,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:32:14,061 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 22:32:14,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4d3b699c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:14, skipping insertion in model container [2021-11-12 22:32:14,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:32:14,062 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:32:14,064 INFO L158 Benchmark]: Toolchain (without parser) took 2396.51ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 67.1MB in the beginning and 65.9MB in the end (delta: 1.2MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. [2021-11-12 22:32:14,065 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 96.5MB. Free memory is still 70.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:32:14,066 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2394.18ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 66.9MB in the beginning and 65.9MB in the end (delta: 984.5kB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. [2021-11-12 22:32:14,067 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 96.5MB. Free memory is still 70.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2394.18ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 66.9MB in the beginning and 65.9MB in the end (delta: 984.5kB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6990]: 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_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e695a989d07c92d21e9a41b59ca742c73a2098242f3cafca723523a39a7793cb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:32:16,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:32:16,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:32:16,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:32:16,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:32:16,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:32:16,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:32:16,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:32:16,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:32:16,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:32:16,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:32:16,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:32:16,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:32:16,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:32:16,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:32:16,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:32:16,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:32:16,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:32:16,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:32:16,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:32:16,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:32:16,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:32:16,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:32:16,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:32:16,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:32:16,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:32:16,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:32:16,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:32:16,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:32:16,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:32:16,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:32:16,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:32:16,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:32:16,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:32:16,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:32:16,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:32:16,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:32:16,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:32:16,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:32:16,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:32:16,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:32:16,266 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 22:32:16,301 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:32:16,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:32:16,303 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:32:16,303 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:32:16,303 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:32:16,303 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:32:16,303 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:32:16,304 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:32:16,304 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:32:16,304 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:32:16,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:32:16,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:32:16,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:32:16,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:32:16,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:32:16,306 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:32:16,306 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:32:16,306 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:32:16,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:32:16,306 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:32:16,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:32:16,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:32:16,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:32:16,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:32:16,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:32:16,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:32:16,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:32:16,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:32:16,308 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:32:16,308 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:32:16,308 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:32:16,309 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:32:16,309 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:32:16,309 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_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e695a989d07c92d21e9a41b59ca742c73a2098242f3cafca723523a39a7793cb [2021-11-12 22:32:16,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:32:16,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:32:16,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:32:16,711 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:32:16,712 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:32:16,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i [2021-11-12 22:32:16,779 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/data/e2fd6794d/0f9e99c7d2994a179b7a722efb70888d/FLAG5a184d82f [2021-11-12 22:32:17,672 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:32:17,673 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i [2021-11-12 22:32:17,724 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/data/e2fd6794d/0f9e99c7d2994a179b7a722efb70888d/FLAG5a184d82f [2021-11-12 22:32:18,134 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/data/e2fd6794d/0f9e99c7d2994a179b7a722efb70888d [2021-11-12 22:32:18,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:32:18,140 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:32:18,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:32:18,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:32:18,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:32:18,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:32:18" (1/1) ... [2021-11-12 22:32:18,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ac89700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:18, skipping insertion in model container [2021-11-12 22:32:18,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:32:18" (1/1) ... [2021-11-12 22:32:18,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:32:18,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:32:18,611 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i[4497,4510] [2021-11-12 22:32:18,617 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i[4557,4570] [2021-11-12 22:32:18,648 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:32:18,657 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:32:19,919 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:19,921 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:19,923 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:19,924 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:19,925 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:19,941 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:19,942 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:19,944 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:19,944 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:20,387 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:32:20,389 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:32:20,390 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:32:20,391 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:32:20,392 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:32:20,393 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:32:20,394 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:32:20,394 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:32:20,395 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:32:20,396 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:32:20,563 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:32:20,693 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:20,693 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:20,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:32:20,832 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:32:20,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:32:20,897 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i[4497,4510] [2021-11-12 22:32:20,897 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i[4557,4570] [2021-11-12 22:32:20,899 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:32:20,899 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:32:20,932 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:20,933 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:20,933 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:20,933 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:20,934 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:20,940 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:20,941 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:20,942 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:20,942 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:20,988 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:32:20,989 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:32:20,994 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:32:20,995 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:32:20,996 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:32:20,996 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:32:20,997 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:32:20,998 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:32:20,998 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:32:20,999 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:32:21,039 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:32:21,133 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:21,133 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:21,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:32:21,201 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:32:21,226 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i[4497,4510] [2021-11-12 22:32:21,227 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i[4557,4570] [2021-11-12 22:32:21,229 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:32:21,230 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:32:21,268 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:21,268 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:21,268 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:21,269 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:21,295 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:21,301 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:21,301 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:21,302 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:21,302 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:21,333 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:32:21,334 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:32:21,334 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:32:21,335 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:32:21,336 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:32:21,336 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:32:21,337 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:32:21,337 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:32:21,338 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:32:21,338 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:32:21,357 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:32:21,407 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:21,408 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:32:21,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:32:21,926 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:32:21,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:21 WrapperNode [2021-11-12 22:32:21,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:32:21,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:32:21,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:32:21,929 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:32:21,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:21" (1/1) ... [2021-11-12 22:32:22,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:21" (1/1) ... [2021-11-12 22:32:22,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:32:22,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:32:22,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:32:22,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:32:22,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:21" (1/1) ... [2021-11-12 22:32:22,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:21" (1/1) ... [2021-11-12 22:32:22,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:21" (1/1) ... [2021-11-12 22:32:22,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:21" (1/1) ... [2021-11-12 22:32:22,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:21" (1/1) ... [2021-11-12 22:32:22,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:21" (1/1) ... [2021-11-12 22:32:22,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:21" (1/1) ... [2021-11-12 22:32:22,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:32:22,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:32:22,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:32:22,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:32:22,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:21" (1/1) ... [2021-11-12 22:32:22,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:32:22,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:32:22,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:32:22,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:32:22,439 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2021-11-12 22:32:22,439 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hton64 [2021-11-12 22:32:22,439 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hton64 [2021-11-12 22:32:22,440 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-12 22:32:22,440 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-12 22:32:22,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:32:22,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-12 22:32:22,440 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 22:32:22,441 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 22:32:22,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:32:22,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 22:32:22,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 22:32:22,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 22:32:22,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 22:32:22,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:32:22,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:32:22,443 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-12 22:32:22,443 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-12 22:32:22,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:32:22,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:32:22,443 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 22:32:22,444 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 22:32:22,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:32:22,444 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-12 22:32:22,444 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-12 22:32:22,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 22:32:22,444 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 22:32:22,445 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 22:32:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-12 22:32:22,445 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-12 22:32:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:32:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:32:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2021-11-12 22:32:22,446 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2021-11-12 22:32:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 22:32:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 22:32:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 22:32:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-12 22:32:22,448 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-12 22:32:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_big_endian [2021-11-12 22:32:22,450 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_big_endian [2021-11-12 22:32:35,972 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:32:35,972 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 22:32:35,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:32:35 BoogieIcfgContainer [2021-11-12 22:32:35,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:32:35,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:32:35,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:32:35,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:32:35,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:32:18" (1/3) ... [2021-11-12 22:32:35,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3703291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:32:35, skipping insertion in model container [2021-11-12 22:32:35,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:32:21" (2/3) ... [2021-11-12 22:32:35,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3703291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:32:35, skipping insertion in model container [2021-11-12 22:32:35,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:32:35" (3/3) ... [2021-11-12 22:32:35,997 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be64_harness.i [2021-11-12 22:32:36,002 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:32:36,002 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:32:36,050 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:32:36,056 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:32:36,056 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:32:36,087 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 91 states have (on average 1.2307692307692308) internal successors, (112), 92 states have internal predecessors, (112), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-11-12 22:32:36,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-12 22:32:36,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:32:36,101 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:32:36,102 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:32:36,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:32:36,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1121284751, now seen corresponding path program 1 times [2021-11-12 22:32:36,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:32:36,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154278344] [2021-11-12 22:32:36,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:36,152 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:32:36,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:32:36,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:32:36,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:32:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:40,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 1897 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:32:40,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:32:40,892 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-12 22:32:40,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:32:41,222 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-12 22:32:41,223 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:32:41,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154278344] [2021-11-12 22:32:41,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1154278344] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:32:41,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:32:41,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-12 22:32:41,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224434494] [2021-11-12 22:32:41,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:32:41,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:32:41,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:32:41,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:32:41,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:32:41,261 INFO L87 Difference]: Start difference. First operand has 141 states, 91 states have (on average 1.2307692307692308) internal successors, (112), 92 states have internal predecessors, (112), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 22:32:41,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:32:41,302 INFO L93 Difference]: Finished difference Result 278 states and 389 transitions. [2021-11-12 22:32:41,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:32:41,304 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 95 [2021-11-12 22:32:41,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:32:41,314 INFO L225 Difference]: With dead ends: 278 [2021-11-12 22:32:41,315 INFO L226 Difference]: Without dead ends: 136 [2021-11-12 22:32:41,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:32:41,323 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.50ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:32:41,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 2.50ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:32:41,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-12 22:32:41,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-11-12 22:32:41,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 87 states have (on average 1.206896551724138) internal successors, (105), 88 states have internal predecessors, (105), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-12 22:32:41,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 176 transitions. [2021-11-12 22:32:41,376 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 176 transitions. Word has length 95 [2021-11-12 22:32:41,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:32:41,377 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 176 transitions. [2021-11-12 22:32:41,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 22:32:41,378 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 176 transitions. [2021-11-12 22:32:41,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-12 22:32:41,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:32:41,383 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:32:41,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:32:41,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:32:41,608 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:32:41,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:32:41,609 INFO L85 PathProgramCache]: Analyzing trace with hash -2046073213, now seen corresponding path program 1 times [2021-11-12 22:32:41,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:32:41,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133153870] [2021-11-12 22:32:41,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:41,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:32:41,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:32:41,615 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:32:41,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:32:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:46,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 1897 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:32:46,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:32:46,501 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-12 22:32:46,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:32:46,984 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-12 22:32:46,984 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:32:46,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133153870] [2021-11-12 22:32:46,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133153870] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:32:46,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:32:46,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 22:32:46,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066789330] [2021-11-12 22:32:46,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:32:46,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:32:46,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:32:46,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:32:46,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:32:46,987 INFO L87 Difference]: Start difference. First operand 136 states and 176 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-12 22:32:47,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:32:47,321 INFO L93 Difference]: Finished difference Result 250 states and 331 transitions. [2021-11-12 22:32:47,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:32:47,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 95 [2021-11-12 22:32:47,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:32:47,328 INFO L225 Difference]: With dead ends: 250 [2021-11-12 22:32:47,328 INFO L226 Difference]: Without dead ends: 139 [2021-11-12 22:32:47,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:32:47,331 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 48 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 231.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.80ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 294.29ms IncrementalHoareTripleChecker+Time [2021-11-12 22:32:47,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 434 Invalid, 40 Unknown, 0 Unchecked, 5.80ms Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 294.29ms Time] [2021-11-12 22:32:47,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-12 22:32:47,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-11-12 22:32:47,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 89 states have (on average 1.202247191011236) internal successors, (107), 91 states have internal predecessors, (107), 36 states have call successors, (36), 12 states have call predecessors, (36), 13 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2021-11-12 22:32:47,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 182 transitions. [2021-11-12 22:32:47,366 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 182 transitions. Word has length 95 [2021-11-12 22:32:47,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:32:47,367 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 182 transitions. [2021-11-12 22:32:47,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-12 22:32:47,368 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 182 transitions. [2021-11-12 22:32:47,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-12 22:32:47,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:32:47,377 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:32:47,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:32:47,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:32:47,593 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:32:47,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:32:47,593 INFO L85 PathProgramCache]: Analyzing trace with hash 418674190, now seen corresponding path program 1 times [2021-11-12 22:32:47,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:32:47,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441406291] [2021-11-12 22:32:47,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:47,598 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:32:47,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:32:47,601 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:32:47,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:32:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:51,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 1910 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 22:32:51,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:32:52,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:32:53,268 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-12 22:32:53,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:32:54,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-12 22:32:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-12 22:32:54,635 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:32:54,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441406291] [2021-11-12 22:32:54,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441406291] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:32:54,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:32:54,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 19 [2021-11-12 22:32:54,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823736971] [2021-11-12 22:32:54,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:32:54,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:32:54,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:32:54,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:32:54,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-12 22:32:54,638 INFO L87 Difference]: Start difference. First operand 139 states and 182 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 10 states have internal predecessors, (51), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-12 22:32:54,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:32:54,909 INFO L93 Difference]: Finished difference Result 273 states and 359 transitions. [2021-11-12 22:32:54,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 22:32:54,928 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 10 states have internal predecessors, (51), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 101 [2021-11-12 22:32:54,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:32:54,931 INFO L225 Difference]: With dead ends: 273 [2021-11-12 22:32:54,931 INFO L226 Difference]: Without dead ends: 152 [2021-11-12 22:32:54,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-12 22:32:54,946 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 34 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 133.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.13ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 169.78ms IncrementalHoareTripleChecker+Time [2021-11-12 22:32:54,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 811 Invalid, 88 Unknown, 0 Unchecked, 6.13ms Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 64 Unchecked, 169.78ms Time] [2021-11-12 22:32:54,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-12 22:32:54,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-12 22:32:54,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 101 states have (on average 1.2079207920792079) internal successors, (122), 103 states have internal predecessors, (122), 36 states have call successors, (36), 13 states have call predecessors, (36), 14 states have return successors, (40), 35 states have call predecessors, (40), 35 states have call successors, (40) [2021-11-12 22:32:54,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 198 transitions. [2021-11-12 22:32:54,979 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 198 transitions. Word has length 101 [2021-11-12 22:32:54,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:32:54,979 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 198 transitions. [2021-11-12 22:32:54,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 10 states have internal predecessors, (51), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-12 22:32:54,983 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 198 transitions. [2021-11-12 22:32:54,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-12 22:32:54,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:32:54,988 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:32:55,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:32:55,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:32:55,204 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:32:55,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:32:55,204 INFO L85 PathProgramCache]: Analyzing trace with hash -73951984, now seen corresponding path program 1 times [2021-11-12 22:32:55,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:32:55,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766592788] [2021-11-12 22:32:55,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:55,209 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:32:55,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:32:55,210 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:32:55,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:32:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:59,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:32:59,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:32:59,618 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-12 22:32:59,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:32:59,875 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-12 22:32:59,875 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:32:59,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766592788] [2021-11-12 22:32:59,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766592788] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:32:59,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:32:59,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-12 22:32:59,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854789238] [2021-11-12 22:32:59,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:32:59,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:32:59,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:32:59,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:32:59,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:32:59,878 INFO L87 Difference]: Start difference. First operand 152 states and 198 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 22:32:59,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:32:59,956 INFO L93 Difference]: Finished difference Result 276 states and 371 transitions. [2021-11-12 22:32:59,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:32:59,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 101 [2021-11-12 22:32:59,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:32:59,959 INFO L225 Difference]: With dead ends: 276 [2021-11-12 22:32:59,960 INFO L226 Difference]: Without dead ends: 158 [2021-11-12 22:32:59,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:32:59,962 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 20 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.16ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.12ms IncrementalHoareTripleChecker+Time [2021-11-12 22:32:59,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 520 Invalid, 16 Unknown, 0 Unchecked, 4.16ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 46.12ms Time] [2021-11-12 22:32:59,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-12 22:32:59,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 146. [2021-11-12 22:32:59,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 96 states have (on average 1.2083333333333333) internal successors, (116), 97 states have internal predecessors, (116), 36 states have call successors, (36), 13 states have call predecessors, (36), 13 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2021-11-12 22:32:59,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 191 transitions. [2021-11-12 22:32:59,979 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 191 transitions. Word has length 101 [2021-11-12 22:32:59,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:32:59,979 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 191 transitions. [2021-11-12 22:32:59,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 22:32:59,980 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 191 transitions. [2021-11-12 22:32:59,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-12 22:32:59,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:32:59,981 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:33:00,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:33:00,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:33:00,202 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:33:00,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:33:00,203 INFO L85 PathProgramCache]: Analyzing trace with hash -798646058, now seen corresponding path program 1 times [2021-11-12 22:33:00,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:33:00,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517370487] [2021-11-12 22:33:00,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:33:00,207 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:33:00,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:33:00,208 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:33:00,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:33:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:33:04,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:33:04,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:33:05,139 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-12 22:33:05,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:33:05,700 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-12 22:33:05,701 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:33:05,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517370487] [2021-11-12 22:33:05,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517370487] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:33:05,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:33:05,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-12 22:33:05,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305364600] [2021-11-12 22:33:05,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:33:05,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:33:05,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:33:05,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:33:05,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:33:05,703 INFO L87 Difference]: Start difference. First operand 146 states and 191 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 22:33:07,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:33:09,919 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:33:11,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:33:11,243 INFO L93 Difference]: Finished difference Result 282 states and 384 transitions. [2021-11-12 22:33:11,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:33:11,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 105 [2021-11-12 22:33:11,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:33:11,249 INFO L225 Difference]: With dead ends: 282 [2021-11-12 22:33:11,249 INFO L226 Difference]: Without dead ends: 166 [2021-11-12 22:33:11,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 202 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:33:11,251 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 42 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5174.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.90ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 5385.06ms IncrementalHoareTripleChecker+Time [2021-11-12 22:33:11,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 610 Invalid, 132 Unknown, 0 Unchecked, 4.90ms Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 2 Unknown, 42 Unchecked, 5385.06ms Time] [2021-11-12 22:33:11,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-12 22:33:11,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2021-11-12 22:33:11,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 106 states have internal predecessors, (128), 36 states have call successors, (36), 13 states have call predecessors, (36), 13 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2021-11-12 22:33:11,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 203 transitions. [2021-11-12 22:33:11,268 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 203 transitions. Word has length 105 [2021-11-12 22:33:11,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:33:11,269 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 203 transitions. [2021-11-12 22:33:11,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 22:33:11,269 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 203 transitions. [2021-11-12 22:33:11,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-12 22:33:11,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:33:11,271 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:33:11,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:33:11,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:33:11,480 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:33:11,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:33:11,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1109811732, now seen corresponding path program 1 times [2021-11-12 22:33:11,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:33:11,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544568766] [2021-11-12 22:33:11,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:33:11,486 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:33:11,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:33:11,486 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:33:11,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:33:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:33:15,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 1916 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 22:33:15,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:33:17,427 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 22:33:17,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:33:19,490 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-12 22:33:19,490 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:33:19,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544568766] [2021-11-12 22:33:19,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544568766] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:33:19,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:33:19,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 19 [2021-11-12 22:33:19,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505193161] [2021-11-12 22:33:19,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:33:19,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:33:19,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:33:19,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:33:19,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-12 22:33:19,492 INFO L87 Difference]: Start difference. First operand 155 states and 203 transitions. Second operand has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-12 22:33:21,699 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:33:23,709 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:33:27,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:33:27,548 INFO L93 Difference]: Finished difference Result 290 states and 397 transitions. [2021-11-12 22:33:27,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 22:33:27,550 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 105 [2021-11-12 22:33:27,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:33:27,552 INFO L225 Difference]: With dead ends: 290 [2021-11-12 22:33:27,552 INFO L226 Difference]: Without dead ends: 164 [2021-11-12 22:33:27,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:33:27,554 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 38 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6217.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.79ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 318 IncrementalHoareTripleChecker+Unchecked, 6503.38ms IncrementalHoareTripleChecker+Time [2021-11-12 22:33:27,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 1581 Invalid, 558 Unknown, 0 Unchecked, 9.79ms Time], IncrementalHoareTripleChecker [2 Valid, 236 Invalid, 2 Unknown, 318 Unchecked, 6503.38ms Time] [2021-11-12 22:33:27,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-12 22:33:27,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2021-11-12 22:33:27,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 109 states have (on average 1.1926605504587156) internal successors, (130), 111 states have internal predecessors, (130), 36 states have call successors, (36), 13 states have call predecessors, (36), 14 states have return successors, (44), 35 states have call predecessors, (44), 35 states have call successors, (44) [2021-11-12 22:33:27,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 210 transitions. [2021-11-12 22:33:27,571 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 210 transitions. Word has length 105 [2021-11-12 22:33:27,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:33:27,572 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 210 transitions. [2021-11-12 22:33:27,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-12 22:33:27,572 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 210 transitions. [2021-11-12 22:33:27,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-12 22:33:27,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:33:27,574 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:33:27,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-12 22:33:27,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:33:27,796 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:33:27,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:33:27,796 INFO L85 PathProgramCache]: Analyzing trace with hash 935458392, now seen corresponding path program 1 times [2021-11-12 22:33:27,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:33:27,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652224661] [2021-11-12 22:33:27,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:33:27,799 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:33:27,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:33:27,800 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:33:27,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:33:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:33:31,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 1917 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:33:31,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:33:32,097 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-12 22:33:32,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:33:32,330 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-12 22:33:32,330 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:33:32,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652224661] [2021-11-12 22:33:32,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652224661] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:33:32,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:33:32,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-12 22:33:32,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903372783] [2021-11-12 22:33:32,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:33:32,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:33:32,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:33:32,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:33:32,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:33:32,332 INFO L87 Difference]: Start difference. First operand 160 states and 210 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 22:33:32,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:33:32,398 INFO L93 Difference]: Finished difference Result 294 states and 395 transitions. [2021-11-12 22:33:32,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:33:32,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 105 [2021-11-12 22:33:32,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:33:32,403 INFO L225 Difference]: With dead ends: 294 [2021-11-12 22:33:32,403 INFO L226 Difference]: Without dead ends: 164 [2021-11-12 22:33:32,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:33:32,405 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 34 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.66ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.16ms IncrementalHoareTripleChecker+Time [2021-11-12 22:33:32,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 511 Invalid, 13 Unknown, 0 Unchecked, 1.66ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 42.16ms Time] [2021-11-12 22:33:32,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-12 22:33:32,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 156. [2021-11-12 22:33:32,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 105 states have (on average 1.1714285714285715) internal successors, (123), 107 states have internal predecessors, (123), 36 states have call successors, (36), 13 states have call predecessors, (36), 14 states have return successors, (44), 35 states have call predecessors, (44), 35 states have call successors, (44) [2021-11-12 22:33:32,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 203 transitions. [2021-11-12 22:33:32,421 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 203 transitions. Word has length 105 [2021-11-12 22:33:32,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:33:32,422 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 203 transitions. [2021-11-12 22:33:32,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 22:33:32,422 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 203 transitions. [2021-11-12 22:33:32,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-12 22:33:32,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:33:32,424 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:33:32,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-12 22:33:32,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:33:32,640 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:33:32,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:33:32,640 INFO L85 PathProgramCache]: Analyzing trace with hash -975584166, now seen corresponding path program 1 times [2021-11-12 22:33:32,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:33:32,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [937533611] [2021-11-12 22:33:32,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:33:32,643 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:33:32,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:33:32,649 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:33:32,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:33:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:33:36,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 1914 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:33:36,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:33:37,017 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 22:33:37,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:33:37,523 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-12 22:33:37,523 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:33:37,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [937533611] [2021-11-12 22:33:37,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [937533611] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:33:37,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:33:37,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-12 22:33:37,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719531897] [2021-11-12 22:33:37,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:33:37,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 22:33:37,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:33:37,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 22:33:37,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:33:37,525 INFO L87 Difference]: Start difference. First operand 156 states and 203 transitions. Second operand has 9 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-12 22:33:38,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:33:38,048 INFO L93 Difference]: Finished difference Result 293 states and 392 transitions. [2021-11-12 22:33:38,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 22:33:38,049 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 105 [2021-11-12 22:33:38,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:33:38,052 INFO L225 Difference]: With dead ends: 293 [2021-11-12 22:33:38,052 INFO L226 Difference]: Without dead ends: 165 [2021-11-12 22:33:38,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:33:38,054 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 12 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 368.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.00ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 412.92ms IncrementalHoareTripleChecker+Time [2021-11-12 22:33:38,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1261 Invalid, 142 Unknown, 0 Unchecked, 8.00ms Time], IncrementalHoareTripleChecker [3 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 412.92ms Time] [2021-11-12 22:33:38,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-12 22:33:38,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 156. [2021-11-12 22:33:38,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 105 states have (on average 1.1714285714285715) internal successors, (123), 107 states have internal predecessors, (123), 36 states have call successors, (36), 13 states have call predecessors, (36), 14 states have return successors, (44), 35 states have call predecessors, (44), 35 states have call successors, (44) [2021-11-12 22:33:38,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 203 transitions. [2021-11-12 22:33:38,069 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 203 transitions. Word has length 105 [2021-11-12 22:33:38,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:33:38,069 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 203 transitions. [2021-11-12 22:33:38,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-12 22:33:38,070 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 203 transitions. [2021-11-12 22:33:38,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-12 22:33:38,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:33:38,072 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:33:38,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:33:38,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:33:38,295 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:33:38,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:33:38,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1229450529, now seen corresponding path program 1 times [2021-11-12 22:33:38,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:33:38,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773424925] [2021-11-12 22:33:38,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:33:38,301 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:33:38,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:33:38,302 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:33:38,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:33:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:33:42,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 1918 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:33:42,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:33:42,772 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-12 22:33:42,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:33:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-12 22:33:43,214 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:33:43,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773424925] [2021-11-12 22:33:43,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773424925] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:33:43,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:33:43,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2021-11-12 22:33:43,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606908108] [2021-11-12 22:33:43,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:33:43,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:33:43,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:33:43,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:33:43,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:33:43,217 INFO L87 Difference]: Start difference. First operand 156 states and 203 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-12 22:33:43,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:33:43,541 INFO L93 Difference]: Finished difference Result 276 states and 360 transitions. [2021-11-12 22:33:43,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:33:43,542 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 107 [2021-11-12 22:33:43,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:33:43,544 INFO L225 Difference]: With dead ends: 276 [2021-11-12 22:33:43,544 INFO L226 Difference]: Without dead ends: 156 [2021-11-12 22:33:43,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:33:43,545 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 65 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 233.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.14ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 290.41ms IncrementalHoareTripleChecker+Time [2021-11-12 22:33:43,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 578 Invalid, 70 Unknown, 0 Unchecked, 2.14ms Time], IncrementalHoareTripleChecker [26 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 290.41ms Time] [2021-11-12 22:33:43,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-12 22:33:43,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-11-12 22:33:43,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 105 states have (on average 1.1714285714285715) internal successors, (123), 107 states have internal predecessors, (123), 36 states have call successors, (36), 13 states have call predecessors, (36), 14 states have return successors, (43), 35 states have call predecessors, (43), 35 states have call successors, (43) [2021-11-12 22:33:43,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 202 transitions. [2021-11-12 22:33:43,557 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 202 transitions. Word has length 107 [2021-11-12 22:33:43,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:33:43,557 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 202 transitions. [2021-11-12 22:33:43,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-12 22:33:43,558 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 202 transitions. [2021-11-12 22:33:43,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-12 22:33:43,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:33:43,560 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:33:43,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-12 22:33:43,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:33:43,775 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:33:43,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:33:43,775 INFO L85 PathProgramCache]: Analyzing trace with hash 299668714, now seen corresponding path program 1 times [2021-11-12 22:33:43,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:33:43,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900034176] [2021-11-12 22:33:43,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:33:43,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:33:43,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:33:43,779 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:33:43,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:33:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:33:47,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 1931 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:33:47,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:33:48,213 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-12 22:33:48,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:33:48,636 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-12 22:33:48,636 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:33:48,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900034176] [2021-11-12 22:33:48,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900034176] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:33:48,637 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:33:48,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 22:33:48,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455739406] [2021-11-12 22:33:48,637 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:33:48,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:33:48,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:33:48,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:33:48,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:33:48,639 INFO L87 Difference]: Start difference. First operand 156 states and 202 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-12 22:33:48,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:33:48,649 INFO L93 Difference]: Finished difference Result 267 states and 348 transitions. [2021-11-12 22:33:48,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:33:48,649 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) Word has length 113 [2021-11-12 22:33:48,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:33:48,651 INFO L225 Difference]: With dead ends: 267 [2021-11-12 22:33:48,652 INFO L226 Difference]: Without dead ends: 156 [2021-11-12 22:33:48,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:33:48,653 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 0 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.76ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.07ms IncrementalHoareTripleChecker+Time [2021-11-12 22:33:48,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 756 Invalid, 55 Unknown, 0 Unchecked, 1.76ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 55 Unchecked, 0.07ms Time] [2021-11-12 22:33:48,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-12 22:33:48,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-11-12 22:33:48,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 105 states have (on average 1.161904761904762) internal successors, (122), 107 states have internal predecessors, (122), 36 states have call successors, (36), 13 states have call predecessors, (36), 14 states have return successors, (43), 35 states have call predecessors, (43), 35 states have call successors, (43) [2021-11-12 22:33:48,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 201 transitions. [2021-11-12 22:33:48,672 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 201 transitions. Word has length 113 [2021-11-12 22:33:48,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:33:48,673 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 201 transitions. [2021-11-12 22:33:48,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-12 22:33:48,674 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 201 transitions. [2021-11-12 22:33:48,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-12 22:33:48,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:33:48,676 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:33:48,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:33:48,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:33:48,893 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:33:48,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:33:48,894 INFO L85 PathProgramCache]: Analyzing trace with hash -2044998327, now seen corresponding path program 1 times [2021-11-12 22:33:48,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:33:48,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405330079] [2021-11-12 22:33:48,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:33:48,897 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:33:48,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:33:48,898 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:33:48,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 22:33:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:33:53,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 1933 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 22:33:53,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:33:53,478 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-12 22:33:53,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:33:53,968 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-12 22:33:53,969 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:33:53,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405330079] [2021-11-12 22:33:53,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405330079] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:33:53,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:33:53,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 8 [2021-11-12 22:33:53,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643813770] [2021-11-12 22:33:53,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:33:53,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:33:53,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:33:53,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:33:53,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:33:53,971 INFO L87 Difference]: Start difference. First operand 156 states and 201 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-12 22:33:54,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:33:54,682 INFO L93 Difference]: Finished difference Result 261 states and 338 transitions. [2021-11-12 22:33:54,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 22:33:54,682 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 113 [2021-11-12 22:33:54,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:33:54,684 INFO L225 Difference]: With dead ends: 261 [2021-11-12 22:33:54,684 INFO L226 Difference]: Without dead ends: 153 [2021-11-12 22:33:54,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:33:54,685 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 84 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 549.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.33ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 647.51ms IncrementalHoareTripleChecker+Time [2021-11-12 22:33:54,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 995 Invalid, 134 Unknown, 0 Unchecked, 3.33ms Time], IncrementalHoareTripleChecker [41 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 647.51ms Time] [2021-11-12 22:33:54,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-12 22:33:54,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-11-12 22:33:54,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 103 states have (on average 1.1553398058252426) internal successors, (119), 104 states have internal predecessors, (119), 36 states have call successors, (36), 13 states have call predecessors, (36), 13 states have return successors, (40), 35 states have call predecessors, (40), 35 states have call successors, (40) [2021-11-12 22:33:54,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 195 transitions. [2021-11-12 22:33:54,695 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 195 transitions. Word has length 113 [2021-11-12 22:33:54,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:33:54,696 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 195 transitions. [2021-11-12 22:33:54,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-12 22:33:54,696 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 195 transitions. [2021-11-12 22:33:54,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-12 22:33:54,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:33:54,698 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:33:54,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:33:54,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:33:54,912 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:33:54,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:33:54,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1948801185, now seen corresponding path program 1 times [2021-11-12 22:33:54,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:33:54,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626474081] [2021-11-12 22:33:54,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:33:54,917 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:33:54,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:33:54,924 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:33:54,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 22:33:58,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:33:59,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 1959 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-12 22:33:59,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:34:01,220 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:34:01,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 155 treesize of output 59 [2021-11-12 22:34:01,424 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-12 22:34:01,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:34:02,203 INFO L354 Elim1Store]: treesize reduction 322, result has 0.3 percent of original size [2021-11-12 22:34:02,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 134 treesize of output 42 [2021-11-12 22:34:11,012 WARN L227 SmtUtils]: Spent 8.23s on a formula simplification. DAG size of input: 523 DAG size of output: 169 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 22:34:11,015 INFO L354 Elim1Store]: treesize reduction 1138, result has 27.7 percent of original size [2021-11-12 22:34:11,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 129 treesize of output 471 [2021-11-12 22:38:03,862 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-12 22:38:03,862 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:38:03,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [626474081] [2021-11-12 22:38:03,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [626474081] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:38:03,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:38:03,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10] total 20 [2021-11-12 22:38:03,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144886888] [2021-11-12 22:38:03,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:03,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 22:38:03,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:38:03,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 22:38:03,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-11-12 22:38:03,865 INFO L87 Difference]: Start difference. First operand 153 states and 195 transitions. Second operand has 13 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2021-11-12 22:38:06,079 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:38:08,097 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:38:10,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:38:16,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:16,559 INFO L93 Difference]: Finished difference Result 313 states and 405 transitions. [2021-11-12 22:38:16,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-12 22:38:16,560 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) Word has length 125 [2021-11-12 22:38:16,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:16,562 INFO L225 Difference]: With dead ends: 313 [2021-11-12 22:38:16,562 INFO L226 Difference]: Without dead ends: 216 [2021-11-12 22:38:16,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 231 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2021-11-12 22:38:16,564 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 154 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 72 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10265.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.99ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 10818.14ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:16,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 1723 Invalid, 643 Unknown, 0 Unchecked, 8.99ms Time], IncrementalHoareTripleChecker [72 Valid, 498 Invalid, 3 Unknown, 70 Unchecked, 10818.14ms Time] [2021-11-12 22:38:16,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-12 22:38:16,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 191. [2021-11-12 22:38:16,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 135 states have (on average 1.1555555555555554) internal successors, (156), 137 states have internal predecessors, (156), 39 states have call successors, (39), 15 states have call predecessors, (39), 16 states have return successors, (49), 38 states have call predecessors, (49), 38 states have call successors, (49) [2021-11-12 22:38:16,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 244 transitions. [2021-11-12 22:38:16,582 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 244 transitions. Word has length 125 [2021-11-12 22:38:16,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:16,582 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 244 transitions. [2021-11-12 22:38:16,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2021-11-12 22:38:16,583 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 244 transitions. [2021-11-12 22:38:16,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-12 22:38:16,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:16,585 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:16,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:16,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:38:16,802 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:16,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:16,803 INFO L85 PathProgramCache]: Analyzing trace with hash 352021405, now seen corresponding path program 1 times [2021-11-12 22:38:16,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:38:16,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3615107] [2021-11-12 22:38:16,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:16,806 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:38:16,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:38:16,807 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:38:16,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 22:38:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:21,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 1962 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-12 22:38:21,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:25,142 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 81 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-12 22:38:25,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:30,948 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:30,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-12 22:38:30,992 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-12 22:38:30,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-12 22:38:31,184 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 40 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-12 22:38:31,184 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:38:31,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3615107] [2021-11-12 22:38:31,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3615107] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:31,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1554780702] [2021-11-12 22:38:31,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:31,185 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:38:31,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:38:31,186 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:38:31,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-12 22:38:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:40,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 1962 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 22:38:40,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:41,351 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-12 22:38:41,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:42,110 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-12 22:38:42,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1554780702] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:38:42,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:38:42,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [20, 15, 10] total 37 [2021-11-12 22:38:42,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526758404] [2021-11-12 22:38:42,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:42,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:38:42,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:38:42,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:38:42,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1228, Unknown=0, NotChecked=0, Total=1332 [2021-11-12 22:38:42,113 INFO L87 Difference]: Start difference. First operand 191 states and 244 transitions. Second operand has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-12 22:38:42,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:42,494 INFO L93 Difference]: Finished difference Result 203 states and 261 transitions. [2021-11-12 22:38:42,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 22:38:42,495 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 125 [2021-11-12 22:38:42,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:42,497 INFO L225 Difference]: With dead ends: 203 [2021-11-12 22:38:42,497 INFO L226 Difference]: Without dead ends: 201 [2021-11-12 22:38:42,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 457 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=114, Invalid=1368, Unknown=0, NotChecked=0, Total=1482 [2021-11-12 22:38:42,499 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 21 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 133.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.78ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 163.10ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:42,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 1202 Invalid, 55 Unknown, 0 Unchecked, 2.78ms Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 163.10ms Time] [2021-11-12 22:38:42,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-12 22:38:42,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2021-11-12 22:38:42,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 141 states have (on average 1.148936170212766) internal successors, (162), 144 states have internal predecessors, (162), 40 states have call successors, (40), 16 states have call predecessors, (40), 18 states have return successors, (56), 39 states have call predecessors, (56), 39 states have call successors, (56) [2021-11-12 22:38:42,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 258 transitions. [2021-11-12 22:38:42,515 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 258 transitions. Word has length 125 [2021-11-12 22:38:42,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:42,516 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 258 transitions. [2021-11-12 22:38:42,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-12 22:38:42,517 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 258 transitions. [2021-11-12 22:38:42,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-12 22:38:42,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:42,520 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:42,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:42,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:42,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:38:42,924 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:42,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:42,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1961448611, now seen corresponding path program 1 times [2021-11-12 22:38:42,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:38:42,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319203523] [2021-11-12 22:38:42,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:42,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:38:42,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:38:42,929 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:38:42,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 22:38:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:47,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 1968 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 22:38:47,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:50,715 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 85 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-12 22:38:50,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:55,164 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:55,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-12 22:38:55,206 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-12 22:38:55,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-12 22:38:55,405 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-12 22:38:55,405 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:38:55,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319203523] [2021-11-12 22:38:55,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319203523] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:55,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2055036107] [2021-11-12 22:38:55,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:55,406 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:38:55,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:38:55,407 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:38:55,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-12 22:39:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:04,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 1968 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-12 22:39:04,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:06,747 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 85 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-12 22:39:06,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:10,226 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:10,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-12 22:39:10,267 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-12 22:39:10,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-12 22:39:10,504 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-12 22:39:10,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2055036107] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:39:10,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156829797] [2021-11-12 22:39:10,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:10,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:39:10,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:39:10,507 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:39:10,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-12 22:39:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:12,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 1968 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 22:39:12,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:14,463 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 85 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-12 22:39:14,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:17,948 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:17,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-12 22:39:17,990 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-12 22:39:17,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-12 22:39:18,183 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-12 22:39:18,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156829797] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:39:18,184 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:39:18,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 16, 11, 16, 11] total 23 [2021-11-12 22:39:18,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035940036] [2021-11-12 22:39:18,185 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:39:18,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-12 22:39:18,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:18,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-12 22:39:18,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:39:18,187 INFO L87 Difference]: Start difference. First operand 200 states and 258 transitions. Second operand has 23 states, 22 states have (on average 5.181818181818182) internal successors, (114), 22 states have internal predecessors, (114), 7 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2021-11-12 22:39:20,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:39:22,420 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:39:24,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:39:26,449 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:39:31,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:31,436 INFO L93 Difference]: Finished difference Result 346 states and 441 transitions. [2021-11-12 22:39:31,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-12 22:39:31,437 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.181818181818182) internal successors, (114), 22 states have internal predecessors, (114), 7 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) Word has length 129 [2021-11-12 22:39:31,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:31,439 INFO L225 Difference]: With dead ends: 346 [2021-11-12 22:39:31,440 INFO L226 Difference]: Without dead ends: 263 [2021-11-12 22:39:31,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 741 SyntacticMatches, 15 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=171, Invalid=1019, Unknown=0, NotChecked=0, Total=1190 [2021-11-12 22:39:31,442 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 180 mSDsluCounter, 2385 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 65 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11192.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 2580 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.29ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 214 IncrementalHoareTripleChecker+Unchecked, 11604.39ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:31,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 2580 Invalid, 846 Unknown, 0 Unchecked, 10.29ms Time], IncrementalHoareTripleChecker [65 Valid, 563 Invalid, 4 Unknown, 214 Unchecked, 11604.39ms Time] [2021-11-12 22:39:31,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-11-12 22:39:31,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 232. [2021-11-12 22:39:31,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 168 states have (on average 1.1547619047619047) internal successors, (194), 171 states have internal predecessors, (194), 43 states have call successors, (43), 18 states have call predecessors, (43), 20 states have return successors, (60), 42 states have call predecessors, (60), 42 states have call successors, (60) [2021-11-12 22:39:31,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 297 transitions. [2021-11-12 22:39:31,462 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 297 transitions. Word has length 129 [2021-11-12 22:39:31,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:31,463 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 297 transitions. [2021-11-12 22:39:31,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.181818181818182) internal successors, (114), 22 states have internal predecessors, (114), 7 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2021-11-12 22:39:31,463 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 297 transitions. [2021-11-12 22:39:31,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-12 22:39:31,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:31,466 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:31,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:31,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2021-11-12 22:39:31,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:32,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:39:32,080 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:39:32,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:32,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1164928407, now seen corresponding path program 1 times [2021-11-12 22:39:32,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:32,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802914226] [2021-11-12 22:39:32,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:32,084 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:32,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:32,085 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:32,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a07d0cd-187a-4280-832e-f4b39c3515be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-12 22:39:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:36,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 1966 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-12 22:39:36,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:40,187 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 81 proven. 8 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-12 22:39:40,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:54,702 WARN L227 SmtUtils]: Spent 11.35s on a formula simplification. DAG size of input: 526 DAG size of output: 272 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 22:39:54,703 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-12 22:39:54,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 132 treesize of output 771