./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8 --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 cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:26:37,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:26:37,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:26:37,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:26:37,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:26:37,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:26:37,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:26:37,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:26:37,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:26:37,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:26:37,677 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:26:37,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:26:37,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:26:37,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:26:37,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:26:37,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:26:37,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:26:37,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:26:37,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:26:37,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:26:37,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:26:37,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:26:37,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:26:37,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:26:37,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:26:37,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:26:37,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:26:37,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:26:37,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:26:37,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:26:37,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:26:37,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:26:37,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:26:37,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:26:37,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:26:37,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:26:37,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:26:37,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:26:37,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:26:37,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:26:37,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:26:37,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:26:37,781 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:26:37,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:26:37,786 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:26:37,787 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:26:37,787 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:26:37,787 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:26:37,788 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:26:37,788 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:26:37,788 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:26:37,788 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:26:37,790 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:26:37,790 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:26:37,791 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:26:37,791 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:26:37,791 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:26:37,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:26:37,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:26:37,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:26:37,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:26:37,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:26:37,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:26:37,794 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:26:37,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:26:37,795 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:26:37,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:26:37,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:26:37,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:26:37,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:26:37,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:26:37,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:26:37,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:26:37,800 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:26:37,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:26:37,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:26:37,801 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:26:37,802 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:26:37,802 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_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb [2021-11-07 01:26:38,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:26:38,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:26:38,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:26:38,203 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:26:38,204 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:26:38,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-07 01:26:38,278 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/data/258d40e54/432fb45ea1b449dfa15865c2232083af/FLAG7b2964693 [2021-11-07 01:26:39,309 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:26:39,311 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-07 01:26:39,376 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/data/258d40e54/432fb45ea1b449dfa15865c2232083af/FLAG7b2964693 [2021-11-07 01:26:39,651 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/data/258d40e54/432fb45ea1b449dfa15865c2232083af [2021-11-07 01:26:39,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:26:39,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:26:39,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:26:39,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:26:39,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:26:39,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:26:39" (1/1) ... [2021-11-07 01:26:39,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@484adae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:39, skipping insertion in model container [2021-11-07 01:26:39,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:26:39" (1/1) ... [2021-11-07 01:26:39,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:26:39,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:26:40,301 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_7855f682-3879-4a9d-b5a0-e58517939a32/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4510,4523] [2021-11-07 01:26:40,318 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_7855f682-3879-4a9d-b5a0-e58517939a32/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4570,4583] [2021-11-07 01:26:40,354 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:26:40,361 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:26:41,705 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:41,706 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:41,707 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:41,708 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:41,710 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:41,726 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:41,727 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:41,730 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:41,731 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:42,314 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:26:42,316 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:26:42,317 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:26:42,319 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:26:42,321 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:26:42,321 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:26:42,322 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:26:42,323 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:26:42,324 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:26:42,325 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:26:42,631 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:26:42,843 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:42,844 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:42,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:26:42,979 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) [2021-11-07 01:26:42,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7399d859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:42, skipping insertion in model container [2021-11-07 01:26:42,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:26:42,981 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:26:42,984 INFO L168 Benchmark]: Toolchain (without parser) took 3324.93 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 37.5 MB in the beginning and 49.8 MB in the end (delta: -12.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. [2021-11-07 01:26:42,985 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 83.9 MB. Free memory was 62.8 MB in the beginning and 62.7 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:26:42,986 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3300.84 ms. Allocated memory is still 100.7 MB. Free memory was 78.3 MB in the beginning and 49.8 MB in the end (delta: 28.5 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:26:42,988 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 83.9 MB. Free memory was 62.8 MB in the beginning and 62.7 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 3300.84 ms. Allocated memory is still 100.7 MB. Free memory was 78.3 MB in the beginning and 49.8 MB in the end (delta: 28.5 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. * 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_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8 --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 cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:26:45,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:26:45,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:26:45,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:26:45,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:26:45,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:26:45,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:26:45,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:26:45,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:26:45,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:26:45,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:26:45,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:26:45,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:26:45,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:26:45,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:26:45,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:26:45,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:26:45,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:26:45,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:26:45,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:26:45,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:26:45,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:26:45,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:26:45,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:26:45,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:26:45,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:26:45,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:26:45,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:26:45,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:26:45,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:26:45,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:26:45,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:26:45,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:26:45,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:26:45,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:26:45,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:26:45,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:26:45,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:26:45,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:26:45,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:26:45,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:26:45,925 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:26:45,960 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:26:45,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:26:45,961 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:26:45,961 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:26:45,961 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:26:45,962 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:26:45,962 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:26:45,962 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:26:45,962 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:26:45,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:26:45,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:26:45,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:26:45,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:26:45,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:26:45,965 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:26:45,965 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:26:45,965 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:26:45,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:26:45,966 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:26:45,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:26:45,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:26:45,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:26:45,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:26:45,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:26:45,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:26:45,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:26:45,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:26:45,968 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:26:45,968 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:26:45,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:26:45,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:26:45,969 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:26:45,969 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_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb [2021-11-07 01:26:46,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:26:46,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:26:46,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:26:46,387 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:26:46,388 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:26:46,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-07 01:26:46,463 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/data/855bb9cc9/c9f56fcb6c7e4155a0c0d003855b53d1/FLAGa07d0bf31 [2021-11-07 01:26:47,608 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:26:47,609 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-07 01:26:47,668 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/data/855bb9cc9/c9f56fcb6c7e4155a0c0d003855b53d1/FLAGa07d0bf31 [2021-11-07 01:26:47,952 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/data/855bb9cc9/c9f56fcb6c7e4155a0c0d003855b53d1 [2021-11-07 01:26:47,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:26:47,956 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:26:47,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:26:47,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:26:47,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:26:47,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:26:47" (1/1) ... [2021-11-07 01:26:47,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46ace2f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:47, skipping insertion in model container [2021-11-07 01:26:47,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:26:47" (1/1) ... [2021-11-07 01:26:47,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:26:48,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:26:48,414 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_7855f682-3879-4a9d-b5a0-e58517939a32/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4510,4523] [2021-11-07 01:26:48,421 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_7855f682-3879-4a9d-b5a0-e58517939a32/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4570,4583] [2021-11-07 01:26:48,449 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:26:48,455 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:26:49,599 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:49,600 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:49,600 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:49,623 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:49,625 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:49,644 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:49,645 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:49,648 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:49,649 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:50,321 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:26:50,324 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:26:50,326 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:26:50,329 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:26:50,336 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:26:50,337 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:26:50,338 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:26:50,340 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:26:50,340 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:26:50,342 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:26:50,657 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:26:50,831 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:50,832 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:50,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:26:51,040 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:26:51,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:26:51,145 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_7855f682-3879-4a9d-b5a0-e58517939a32/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4510,4523] [2021-11-07 01:26:51,145 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_7855f682-3879-4a9d-b5a0-e58517939a32/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4570,4583] [2021-11-07 01:26:51,148 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:26:51,148 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:26:51,195 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:51,196 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:51,196 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:51,197 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:51,197 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:51,208 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:51,209 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:51,210 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:51,211 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:51,274 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:26:51,275 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:26:51,276 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:26:51,277 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:26:51,285 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:26:51,286 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:26:51,287 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:26:51,287 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:26:51,288 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:26:51,294 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:26:51,339 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:26:51,436 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:51,436 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:51,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:26:51,636 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:26:51,684 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_7855f682-3879-4a9d-b5a0-e58517939a32/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4510,4523] [2021-11-07 01:26:51,685 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_7855f682-3879-4a9d-b5a0-e58517939a32/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4570,4583] [2021-11-07 01:26:51,687 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:26:51,688 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:26:51,739 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:51,739 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:51,740 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:51,740 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:51,741 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:51,747 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:51,748 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:51,749 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:51,750 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:51,793 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:26:51,794 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:26:51,795 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:26:51,796 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:26:51,797 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:26:51,798 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:26:51,799 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:26:51,800 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:26:51,801 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:26:51,801 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:26:51,880 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:26:51,936 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:51,937 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:26:51,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:26:52,413 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:26:52,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:52 WrapperNode [2021-11-07 01:26:52,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:26:52,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:26:52,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:26:52,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:26:52,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:52" (1/1) ... [2021-11-07 01:26:52,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:52" (1/1) ... [2021-11-07 01:26:52,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:26:52,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:26:52,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:26:52,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:26:52,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:52" (1/1) ... [2021-11-07 01:26:52,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:52" (1/1) ... [2021-11-07 01:26:52,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:52" (1/1) ... [2021-11-07 01:26:52,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:52" (1/1) ... [2021-11-07 01:26:52,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:52" (1/1) ... [2021-11-07 01:26:52,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:52" (1/1) ... [2021-11-07 01:26:52,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:52" (1/1) ... [2021-11-07 01:26:52,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:26:52,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:26:52,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:26:52,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:26:52,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:52" (1/1) ... [2021-11-07 01:26:53,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:26:53,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:26:53,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:26:53,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:26:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:26:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:26:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:26:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:26:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:26:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:26:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:26:53,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:26:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:26:53,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:26:53,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:26:53,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:26:53,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:26:53,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:26:53,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:27:12,915 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:27:12,915 INFO L299 CfgBuilder]: Removed 151 assume(true) statements. [2021-11-07 01:27:12,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:27:12 BoogieIcfgContainer [2021-11-07 01:27:12,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:27:12,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:27:12,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:27:12,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:27:12,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:26:47" (1/3) ... [2021-11-07 01:27:12,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57cd9564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:27:12, skipping insertion in model container [2021-11-07 01:27:12,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:52" (2/3) ... [2021-11-07 01:27:12,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57cd9564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:27:12, skipping insertion in model container [2021-11-07 01:27:12,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:27:12" (3/3) ... [2021-11-07 01:27:12,935 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-07 01:27:12,943 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:27:12,943 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-07 01:27:13,024 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:27:13,039 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 [2021-11-07 01:27:13,040 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-07 01:27:13,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 297 states, 277 states have (on average 1.4873646209386282) internal successors, (412), 296 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:13,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 01:27:13,088 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:13,089 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:13,090 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 01:27:13,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:13,110 INFO L85 PathProgramCache]: Analyzing trace with hash 28296255, now seen corresponding path program 1 times [2021-11-07 01:27:13,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:13,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596694680] [2021-11-07 01:27:13,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:13,147 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:13,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:13,153 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:13,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:27:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:18,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 1980 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:27:18,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:18,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:18,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:18,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:18,794 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:18,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596694680] [2021-11-07 01:27:18,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596694680] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:18,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:18,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:27:18,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806548390] [2021-11-07 01:27:18,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:27:18,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:18,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:27:18,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:27:18,844 INFO L87 Difference]: Start difference. First operand has 297 states, 277 states have (on average 1.4873646209386282) internal successors, (412), 296 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:18,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:18,933 INFO L93 Difference]: Finished difference Result 586 states and 815 transitions. [2021-11-07 01:27:18,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:27:18,935 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 01:27:18,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:18,966 INFO L225 Difference]: With dead ends: 586 [2021-11-07 01:27:18,966 INFO L226 Difference]: Without dead ends: 290 [2021-11-07 01:27:18,980 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:27:19,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-07 01:27:19,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-11-07 01:27:19,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 271 states have (on average 1.3505535055350553) internal successors, (366), 289 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:19,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 366 transitions. [2021-11-07 01:27:19,090 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 366 transitions. Word has length 64 [2021-11-07 01:27:19,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:19,092 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 366 transitions. [2021-11-07 01:27:19,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:19,093 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 366 transitions. [2021-11-07 01:27:19,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 01:27:19,100 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:19,100 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:19,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:19,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:19,314 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 01:27:19,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:19,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1015264321, now seen corresponding path program 1 times [2021-11-07 01:27:19,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:19,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199956941] [2021-11-07 01:27:19,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:19,324 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:19,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:19,326 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:19,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:27:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:24,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 1980 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:27:24,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:24,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:24,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:25,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:25,256 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:25,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199956941] [2021-11-07 01:27:25,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199956941] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:25,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:25,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:27:25,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396248354] [2021-11-07 01:27:25,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:27:25,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:25,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:27:25,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:27:25,261 INFO L87 Difference]: Start difference. First operand 290 states and 366 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:27,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:27,925 INFO L93 Difference]: Finished difference Result 550 states and 694 transitions. [2021-11-07 01:27:27,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:27:27,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 01:27:27,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:27,929 INFO L225 Difference]: With dead ends: 550 [2021-11-07 01:27:27,929 INFO L226 Difference]: Without dead ends: 290 [2021-11-07 01:27:27,931 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:27:27,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-07 01:27:27,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-11-07 01:27:27,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 271 states have (on average 1.3468634686346863) internal successors, (365), 289 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:27,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 365 transitions. [2021-11-07 01:27:27,950 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 365 transitions. Word has length 64 [2021-11-07 01:27:27,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:27,951 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 365 transitions. [2021-11-07 01:27:27,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:27,952 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 365 transitions. [2021-11-07 01:27:27,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 01:27:27,955 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:27,955 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:28,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:28,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:28,182 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 01:27:28,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:28,182 INFO L85 PathProgramCache]: Analyzing trace with hash -378357780, now seen corresponding path program 1 times [2021-11-07 01:27:28,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:28,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868741460] [2021-11-07 01:27:28,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:28,187 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:28,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:28,188 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:28,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:27:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:33,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 1991 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:27:33,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:33,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:33,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:34,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:34,060 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:34,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868741460] [2021-11-07 01:27:34,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868741460] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:34,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:34,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:27:34,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184005968] [2021-11-07 01:27:34,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:27:34,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:34,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:27:34,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:27:34,063 INFO L87 Difference]: Start difference. First operand 290 states and 365 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:38,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:38,977 INFO L93 Difference]: Finished difference Result 757 states and 985 transitions. [2021-11-07 01:27:38,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:27:38,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 01:27:38,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:38,982 INFO L225 Difference]: With dead ends: 757 [2021-11-07 01:27:38,982 INFO L226 Difference]: Without dead ends: 488 [2021-11-07 01:27:38,983 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:27:38,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-07 01:27:39,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 308. [2021-11-07 01:27:39,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 289 states have (on average 1.3252595155709344) internal successors, (383), 307 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:39,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 383 transitions. [2021-11-07 01:27:39,003 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 383 transitions. Word has length 70 [2021-11-07 01:27:39,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:39,004 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 383 transitions. [2021-11-07 01:27:39,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:39,005 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 383 transitions. [2021-11-07 01:27:39,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 01:27:39,008 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:39,008 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:39,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:39,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:39,230 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 01:27:39,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:39,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1888023406, now seen corresponding path program 1 times [2021-11-07 01:27:39,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:39,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [487958497] [2021-11-07 01:27:39,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:39,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:39,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:39,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:39,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:27:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:44,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 1988 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:27:44,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:44,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:44,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:44,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:44,977 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:44,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [487958497] [2021-11-07 01:27:44,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [487958497] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:44,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:44,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:27:44,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256731765] [2021-11-07 01:27:44,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:27:44,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:44,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:27:44,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:27:44,981 INFO L87 Difference]: Start difference. First operand 308 states and 383 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:52,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:52,291 INFO L93 Difference]: Finished difference Result 765 states and 980 transitions. [2021-11-07 01:27:52,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:27:52,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 01:27:52,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:52,296 INFO L225 Difference]: With dead ends: 765 [2021-11-07 01:27:52,296 INFO L226 Difference]: Without dead ends: 488 [2021-11-07 01:27:52,297 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:27:52,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-07 01:27:52,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 326. [2021-11-07 01:27:52,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 307 states have (on average 1.3061889250814331) internal successors, (401), 325 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:52,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 401 transitions. [2021-11-07 01:27:52,313 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 401 transitions. Word has length 70 [2021-11-07 01:27:52,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:52,314 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 401 transitions. [2021-11-07 01:27:52,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:52,315 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 401 transitions. [2021-11-07 01:27:52,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 01:27:52,322 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:52,322 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:52,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:52,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:52,546 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 01:27:52,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:52,547 INFO L85 PathProgramCache]: Analyzing trace with hash -822258454, now seen corresponding path program 1 times [2021-11-07 01:27:52,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:52,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175132235] [2021-11-07 01:27:52,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:52,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:52,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:52,552 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:52,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:27:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:57,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 1993 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 01:27:57,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:57,678 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 [2021-11-07 01:27:58,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:58,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:58,519 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 [2021-11-07 01:27:58,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:58,844 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:58,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175132235] [2021-11-07 01:27:58,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175132235] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:58,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:58,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 13 [2021-11-07 01:27:58,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882439453] [2021-11-07 01:27:58,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:27:58,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:58,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:27:58,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:27:58,847 INFO L87 Difference]: Start difference. First operand 326 states and 401 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:08,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:08,624 INFO L93 Difference]: Finished difference Result 683 states and 850 transitions. [2021-11-07 01:28:08,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 01:28:08,626 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 01:28:08,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:08,629 INFO L225 Difference]: With dead ends: 683 [2021-11-07 01:28:08,629 INFO L226 Difference]: Without dead ends: 390 [2021-11-07 01:28:08,630 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:28:08,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-11-07 01:28:08,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 324. [2021-11-07 01:28:08,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 305 states have (on average 1.3049180327868852) internal successors, (398), 323 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:08,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 398 transitions. [2021-11-07 01:28:08,644 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 398 transitions. Word has length 70 [2021-11-07 01:28:08,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:08,644 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 398 transitions. [2021-11-07 01:28:08,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:08,645 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 398 transitions. [2021-11-07 01:28:08,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 01:28:08,647 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:08,648 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:08,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:08,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:08,874 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 01:28:08,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:08,874 INFO L85 PathProgramCache]: Analyzing trace with hash -669816458, now seen corresponding path program 1 times [2021-11-07 01:28:08,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:08,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848291445] [2021-11-07 01:28:08,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:08,878 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:08,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:08,879 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:08,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:28:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:13,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:28:13,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:14,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:14,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:14,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:14,451 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:14,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848291445] [2021-11-07 01:28:14,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848291445] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:14,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:14,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-07 01:28:14,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356799961] [2021-11-07 01:28:14,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:28:14,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:14,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:28:14,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:28:14,455 INFO L87 Difference]: Start difference. First operand 324 states and 398 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:23,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:23,945 INFO L93 Difference]: Finished difference Result 754 states and 902 transitions. [2021-11-07 01:28:23,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:28:23,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-07 01:28:23,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:23,950 INFO L225 Difference]: With dead ends: 754 [2021-11-07 01:28:23,950 INFO L226 Difference]: Without dead ends: 436 [2021-11-07 01:28:23,951 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:28:23,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-11-07 01:28:23,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 324. [2021-11-07 01:28:23,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 305 states have (on average 1.2754098360655737) internal successors, (389), 323 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:23,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 389 transitions. [2021-11-07 01:28:23,965 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 389 transitions. Word has length 74 [2021-11-07 01:28:23,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:23,966 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 389 transitions. [2021-11-07 01:28:23,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:23,967 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 389 transitions. [2021-11-07 01:28:23,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-07 01:28:23,968 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:23,968 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:24,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:24,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:24,182 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 01:28:24,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:24,182 INFO L85 PathProgramCache]: Analyzing trace with hash 861015707, now seen corresponding path program 1 times [2021-11-07 01:28:24,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:24,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116634876] [2021-11-07 01:28:24,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:24,186 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:24,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:24,187 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:24,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:28:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:29,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 2053 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 01:28:29,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:29,637 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 [2021-11-07 01:28:30,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:30,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:30,501 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 [2021-11-07 01:28:30,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:30,863 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:30,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116634876] [2021-11-07 01:28:30,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116634876] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:30,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:30,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 13 [2021-11-07 01:28:30,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698277810] [2021-11-07 01:28:30,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:28:30,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:30,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:28:30,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:28:30,866 INFO L87 Difference]: Start difference. First operand 324 states and 389 transitions. Second operand has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 13 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:44,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:44,896 INFO L93 Difference]: Finished difference Result 655 states and 795 transitions. [2021-11-07 01:28:44,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:28:44,897 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 13 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-07 01:28:44,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:44,901 INFO L225 Difference]: With dead ends: 655 [2021-11-07 01:28:44,901 INFO L226 Difference]: Without dead ends: 394 [2021-11-07 01:28:44,902 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:28:44,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-11-07 01:28:44,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 322. [2021-11-07 01:28:44,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 303 states have (on average 1.273927392739274) internal successors, (386), 321 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:44,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 386 transitions. [2021-11-07 01:28:44,917 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 386 transitions. Word has length 100 [2021-11-07 01:28:44,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:44,918 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 386 transitions. [2021-11-07 01:28:44,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 13 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:44,919 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 386 transitions. [2021-11-07 01:28:44,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 01:28:44,920 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:44,921 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:44,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:45,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:45,138 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 01:28:45,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:45,138 INFO L85 PathProgramCache]: Analyzing trace with hash -687621844, now seen corresponding path program 1 times [2021-11-07 01:28:45,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:45,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840014889] [2021-11-07 01:28:45,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:45,143 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:45,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:45,143 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:45,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:28:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:50,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 2063 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:28:50,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:51,195 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 01:28:51,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 203 treesize of output 59 [2021-11-07 01:28:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:51,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:52,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:52,262 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:52,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840014889] [2021-11-07 01:28:52,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840014889] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:52,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:52,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-07 01:28:52,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719927394] [2021-11-07 01:28:52,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:28:52,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:52,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:28:52,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:28:52,264 INFO L87 Difference]: Start difference. First operand 322 states and 386 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:07,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:07,941 INFO L93 Difference]: Finished difference Result 927 states and 1098 transitions. [2021-11-07 01:29:07,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:29:07,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-07 01:29:07,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:07,948 INFO L225 Difference]: With dead ends: 927 [2021-11-07 01:29:07,948 INFO L226 Difference]: Without dead ends: 631 [2021-11-07 01:29:07,949 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:29:07,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2021-11-07 01:29:07,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 349. [2021-11-07 01:29:07,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 330 states have (on average 1.2515151515151515) internal successors, (413), 348 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:07,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 413 transitions. [2021-11-07 01:29:07,966 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 413 transitions. Word has length 106 [2021-11-07 01:29:07,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:07,966 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 413 transitions. [2021-11-07 01:29:07,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:07,967 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 413 transitions. [2021-11-07 01:29:07,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 01:29:07,968 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:07,969 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:08,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:08,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:29:08,189 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 01:29:08,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:08,189 INFO L85 PathProgramCache]: Analyzing trace with hash 573295406, now seen corresponding path program 1 times [2021-11-07 01:29:08,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:08,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460894250] [2021-11-07 01:29:08,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:08,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:08,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:08,195 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:08,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:29:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:13,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 2060 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:29:13,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:13,878 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 01:29:13,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 203 treesize of output 59 [2021-11-07 01:29:14,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:14,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:14,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:14,783 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:14,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460894250] [2021-11-07 01:29:14,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460894250] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:14,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:14,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-07 01:29:14,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268803138] [2021-11-07 01:29:14,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:29:14,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:14,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:29:14,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:29:14,785 INFO L87 Difference]: Start difference. First operand 349 states and 413 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:39,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:39,990 INFO L93 Difference]: Finished difference Result 876 states and 1017 transitions. [2021-11-07 01:29:39,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:29:39,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-07 01:29:39,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:39,997 INFO L225 Difference]: With dead ends: 876 [2021-11-07 01:29:39,997 INFO L226 Difference]: Without dead ends: 519 [2021-11-07 01:29:39,998 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:29:39,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-11-07 01:29:40,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 338. [2021-11-07 01:29:40,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 319 states have (on average 1.213166144200627) internal successors, (387), 337 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:40,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 387 transitions. [2021-11-07 01:29:40,010 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 387 transitions. Word has length 106 [2021-11-07 01:29:40,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:40,011 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 387 transitions. [2021-11-07 01:29:40,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:40,011 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 387 transitions. [2021-11-07 01:29:40,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 01:29:40,012 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:40,013 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:40,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:40,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:29:40,225 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 01:29:40,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:40,226 INFO L85 PathProgramCache]: Analyzing trace with hash -8349590, now seen corresponding path program 1 times [2021-11-07 01:29:40,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:40,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548192612] [2021-11-07 01:29:40,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:40,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:40,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:40,233 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:40,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7855f682-3879-4a9d-b5a0-e58517939a32/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:29:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:45,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 2061 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-07 01:29:45,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:49,090 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-11-07 01:29:49,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 28 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 304 treesize of output 112 [2021-11-07 01:29:49,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:49,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:23,070 WARN L207 SmtUtils]: Spent 30.20 s on a formula simplification. DAG size of input: 1166 DAG size of output: 314 [2021-11-07 01:30:23,075 INFO L354 Elim1Store]: treesize reduction 2882, result has 23.2 percent of original size [2021-11-07 01:30:23,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 24 select indices, 24 select index equivalence classes, 0 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 276 case distinctions, treesize of input 193 treesize of output 923