./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:28:22,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:28:22,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:28:22,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:28:22,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:28:22,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:28:22,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:28:22,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:28:22,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:28:22,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:28:22,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:28:22,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:28:22,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:28:22,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:28:22,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:28:22,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:28:22,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:28:22,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:28:22,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:28:22,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:28:22,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:28:22,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:28:22,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:28:22,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:28:22,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:28:22,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:28:22,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:28:22,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:28:22,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:28:22,722 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:28:22,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:28:22,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:28:22,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:28:22,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:28:22,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:28:22,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:28:22,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:28:22,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:28:22,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:28:22,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:28:22,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:28:22,733 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:28:22,782 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:28:22,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:28:22,784 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:28:22,784 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:28:22,784 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:28:22,785 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:28:22,785 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:28:22,785 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:28:22,792 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:28:22,793 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:28:22,794 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:28:22,794 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:28:22,795 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:28:22,795 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:28:22,795 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:28:22,795 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:28:22,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:28:22,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:28:22,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:28:22,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:28:22,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:28:22,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:28:22,798 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:28:22,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:28:22,798 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:28:22,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:28:22,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:28:22,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:28:22,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:28:22,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:28:22,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:28:22,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:28:22,803 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:28:22,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:28:22,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:28:22,803 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:28:22,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:28:22,804 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_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 [2021-11-19 14:28:23,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:28:23,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:28:23,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:28:23,197 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:28:23,198 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:28:23,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2021-11-19 14:28:23,315 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/data/d5d0692b1/d6c69e1b7af740beac700c13d8bac682/FLAGdb6a54c31 [2021-11-19 14:28:24,357 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:28:24,358 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2021-11-19 14:28:24,407 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/data/d5d0692b1/d6c69e1b7af740beac700c13d8bac682/FLAGdb6a54c31 [2021-11-19 14:28:24,771 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/data/d5d0692b1/d6c69e1b7af740beac700c13d8bac682 [2021-11-19 14:28:24,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:28:24,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:28:24,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:28:24,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:28:24,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:28:24,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:28:24" (1/1) ... [2021-11-19 14:28:24,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e875ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:24, skipping insertion in model container [2021-11-19 14:28:24,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:28:24" (1/1) ... [2021-11-19 14:28:24,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:28:24,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:28:25,362 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2021-11-19 14:28:25,371 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2021-11-19 14:28:25,395 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:28:25,401 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:28:26,580 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:26,581 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:26,581 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:26,583 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:26,584 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:26,600 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:26,601 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:26,604 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:26,605 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:27,059 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:28:27,061 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:28:27,064 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:28:27,066 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:28:27,076 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:28:27,081 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:28:27,082 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:28:27,083 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:28:27,084 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:28:27,085 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:28:27,331 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:28:27,361 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:27,364 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:27,598 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:27,600 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:27,688 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:28:27,766 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:28:27,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6f2e9ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:27, skipping insertion in model container [2021-11-19 14:28:27,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:28:27,768 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:28:27,770 INFO L158 Benchmark]: Toolchain (without parser) took 2983.52ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 60.2MB in the beginning and 76.1MB in the end (delta: -15.9MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. [2021-11-19 14:28:27,771 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 102.8MB. Free memory was 55.7MB in the beginning and 55.6MB in the end (delta: 49.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:28:27,773 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2977.66ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 60.0MB in the beginning and 76.1MB in the end (delta: -16.1MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2021-11-19 14:28:27,775 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 102.8MB. Free memory was 55.7MB in the beginning and 55.6MB in the end (delta: 49.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2977.66ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 60.0MB in the beginning and 76.1MB in the end (delta: -16.1MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6990]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:28:30,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:28:30,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:28:30,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:28:30,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:28:30,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:28:30,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:28:30,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:28:30,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:28:30,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:28:30,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:28:30,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:28:30,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:28:30,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:28:30,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:28:30,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:28:30,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:28:30,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:28:30,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:28:30,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:28:30,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:28:30,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:28:30,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:28:30,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:28:30,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:28:30,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:28:30,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:28:30,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:28:30,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:28:30,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:28:30,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:28:30,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:28:30,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:28:30,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:28:30,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:28:30,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:28:30,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:28:30,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:28:30,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:28:30,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:28:30,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:28:30,534 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:28:30,582 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:28:30,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:28:30,584 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:28:30,584 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:28:30,585 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:28:30,585 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:28:30,585 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:28:30,585 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:28:30,586 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:28:30,586 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:28:30,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:28:30,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:28:30,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:28:30,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:28:30,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:28:30,590 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:28:30,590 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:28:30,590 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:28:30,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:28:30,591 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:28:30,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:28:30,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:28:30,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:28:30,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:28:30,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:28:30,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:28:30,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:28:30,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:28:30,593 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:28:30,593 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:28:30,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:28:30,593 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:28:30,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:28:30,594 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_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 [2021-11-19 14:28:31,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:28:31,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:28:31,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:28:31,106 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:28:31,107 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:28:31,108 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2021-11-19 14:28:31,199 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/data/e3edd1ff9/58f28ec78dba49709319034abc26d4a8/FLAG0195aeec4 [2021-11-19 14:28:32,158 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:28:32,158 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2021-11-19 14:28:32,210 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/data/e3edd1ff9/58f28ec78dba49709319034abc26d4a8/FLAG0195aeec4 [2021-11-19 14:28:32,678 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/data/e3edd1ff9/58f28ec78dba49709319034abc26d4a8 [2021-11-19 14:28:32,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:28:32,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:28:32,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:28:32,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:28:32,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:28:32,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:28:32" (1/1) ... [2021-11-19 14:28:32,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cecd0b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:32, skipping insertion in model container [2021-11-19 14:28:32,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:28:32" (1/1) ... [2021-11-19 14:28:32,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:28:32,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:28:33,270 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2021-11-19 14:28:33,280 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2021-11-19 14:28:33,319 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:28:33,328 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:28:34,936 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:34,937 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:34,939 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:34,941 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:34,942 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:34,973 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:34,975 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:34,978 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:34,979 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:35,518 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:28:35,519 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:28:35,521 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:28:35,522 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:28:35,523 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:28:35,524 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:28:35,525 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:28:35,526 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:28:35,526 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:28:35,527 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:28:35,721 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:28:35,749 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:35,749 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:35,904 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:35,916 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:35,999 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:28:36,061 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:28:36,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:28:36,133 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2021-11-19 14:28:36,134 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2021-11-19 14:28:36,135 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:28:36,136 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:28:36,167 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,168 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,169 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,169 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,184 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,191 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,191 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,192 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,193 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,239 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:28:36,240 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:28:36,244 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:28:36,245 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:28:36,246 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:28:36,247 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:28:36,247 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:28:36,248 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:28:36,248 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:28:36,248 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:28:36,275 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:28:36,290 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,291 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,383 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,384 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,429 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:28:36,492 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:28:36,521 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2021-11-19 14:28:36,522 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2021-11-19 14:28:36,523 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:28:36,525 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:28:36,637 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,638 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,638 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,639 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,640 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,647 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,660 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,661 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,662 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,747 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:28:36,747 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:28:36,748 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:28:36,749 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:28:36,750 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:28:36,750 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:28:36,751 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:28:36,751 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:28:36,752 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:28:36,752 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:28:36,798 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:28:36,819 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,820 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,928 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,929 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:28:36,953 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:28:37,234 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:28:37,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:37 WrapperNode [2021-11-19 14:28:37,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:28:37,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:28:37,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:28:37,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:28:37,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:37" (1/1) ... [2021-11-19 14:28:37,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:37" (1/1) ... [2021-11-19 14:28:37,566 INFO L137 Inliner]: procedures = 713, calls = 2639, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 1057 [2021-11-19 14:28:37,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:28:37,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:28:37,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:28:37,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:28:37,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:37" (1/1) ... [2021-11-19 14:28:37,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:37" (1/1) ... [2021-11-19 14:28:37,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:37" (1/1) ... [2021-11-19 14:28:37,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:37" (1/1) ... [2021-11-19 14:28:37,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:37" (1/1) ... [2021-11-19 14:28:37,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:37" (1/1) ... [2021-11-19 14:28:37,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:37" (1/1) ... [2021-11-19 14:28:37,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:28:37,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:28:37,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:28:37,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:28:37,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:37" (1/1) ... [2021-11-19 14:28:37,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:28:37,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:28:37,743 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:28:37,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:28:37,798 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-19 14:28:37,798 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-19 14:28:37,799 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-19 14:28:37,799 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-19 14:28:37,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:28:37,800 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 14:28:37,800 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 14:28:37,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:28:37,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:28:37,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:28:37,801 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-19 14:28:37,801 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-19 14:28:37,801 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-19 14:28:37,801 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-19 14:28:37,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:28:37,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:28:37,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:28:37,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:28:37,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:28:37,802 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-19 14:28:37,802 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-19 14:28:37,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:28:37,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:28:37,803 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 14:28:37,803 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 14:28:37,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:28:37,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:28:37,804 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-19 14:28:37,804 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-19 14:28:37,804 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-19 14:28:37,805 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-19 14:28:37,806 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-19 14:28:37,809 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:28:37,809 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:28:37,809 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-19 14:28:37,810 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-19 14:28:37,810 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-11-19 14:28:37,811 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-11-19 14:28:37,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:28:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-19 14:28:37,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-19 14:28:37,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:28:37,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:28:37,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:28:37,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:28:37,819 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 14:28:37,820 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 14:28:37,820 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-19 14:28:37,820 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-19 14:28:37,820 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2021-11-19 14:28:37,820 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2021-11-19 14:28:37,820 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 14:28:37,821 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 14:28:38,221 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:28:38,224 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:28:43,559 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:28:43,579 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:28:43,579 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 14:28:43,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:28:43 BoogieIcfgContainer [2021-11-19 14:28:43,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:28:43,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:28:43,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:28:43,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:28:43,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:28:32" (1/3) ... [2021-11-19 14:28:43,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71beca25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:28:43, skipping insertion in model container [2021-11-19 14:28:43,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:37" (2/3) ... [2021-11-19 14:28:43,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71beca25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:28:43, skipping insertion in model container [2021-11-19 14:28:43,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:28:43" (3/3) ... [2021-11-19 14:28:43,596 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_dynamic_harness.i [2021-11-19 14:28:43,602 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:28:43,603 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:28:43,690 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:28:43,697 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:28:43,698 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:28:43,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 247 states, 155 states have (on average 1.238709677419355) internal successors, (192), 156 states have internal predecessors, (192), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-11-19 14:28:43,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-19 14:28:43,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:28:43,762 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:28:43,763 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:28:43,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:28:43,770 INFO L85 PathProgramCache]: Analyzing trace with hash 840131050, now seen corresponding path program 1 times [2021-11-19 14:28:43,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:28:43,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568317881] [2021-11-19 14:28:43,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:28:43,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:28:43,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:28:43,799 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:28:43,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:28:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:28:44,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 1469 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:28:44,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:28:45,172 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-19 14:28:45,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:28:45,385 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-19 14:28:45,386 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:28:45,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568317881] [2021-11-19 14:28:45,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568317881] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:28:45,388 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:28:45,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:28:45,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744609155] [2021-11-19 14:28:45,394 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:28:45,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:28:45,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:28:45,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:28:45,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:28:45,449 INFO L87 Difference]: Start difference. First operand has 247 states, 155 states have (on average 1.238709677419355) internal successors, (192), 156 states have internal predecessors, (192), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-19 14:28:45,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:28:45,560 INFO L93 Difference]: Finished difference Result 486 states and 705 transitions. [2021-11-19 14:28:45,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:28:45,562 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 83 [2021-11-19 14:28:45,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:28:45,586 INFO L225 Difference]: With dead ends: 486 [2021-11-19 14:28:45,586 INFO L226 Difference]: Without dead ends: 242 [2021-11-19 14:28:45,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:28:45,605 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:28:45,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:28:45,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-19 14:28:45,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-11-19 14:28:45,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 151 states have (on average 1.218543046357616) internal successors, (184), 152 states have internal predecessors, (184), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2021-11-19 14:28:45,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 327 transitions. [2021-11-19 14:28:45,717 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 327 transitions. Word has length 83 [2021-11-19 14:28:45,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:28:45,719 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 327 transitions. [2021-11-19 14:28:45,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-19 14:28:45,719 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 327 transitions. [2021-11-19 14:28:45,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-19 14:28:45,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:28:45,732 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:28:45,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:28:45,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:28:45,945 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:28:45,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:28:45,946 INFO L85 PathProgramCache]: Analyzing trace with hash 449423122, now seen corresponding path program 1 times [2021-11-19 14:28:45,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:28:45,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186159747] [2021-11-19 14:28:45,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:28:45,950 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:28:45,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:28:45,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:28:45,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:28:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:28:46,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:28:46,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:28:47,394 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-19 14:28:47,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:28:47,801 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-19 14:28:47,801 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:28:47,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186159747] [2021-11-19 14:28:47,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186159747] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:28:47,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:28:47,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 14:28:47,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935098937] [2021-11-19 14:28:47,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:28:47,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:28:47,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:28:47,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:28:47,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:28:47,806 INFO L87 Difference]: Start difference. First operand 242 states and 327 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-19 14:28:48,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:28:48,176 INFO L93 Difference]: Finished difference Result 476 states and 647 transitions. [2021-11-19 14:28:48,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:28:48,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 85 [2021-11-19 14:28:48,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:28:48,189 INFO L225 Difference]: With dead ends: 476 [2021-11-19 14:28:48,189 INFO L226 Difference]: Without dead ends: 245 [2021-11-19 14:28:48,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:28:48,192 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 91 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:28:48,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 1108 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:28:48,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-11-19 14:28:48,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2021-11-19 14:28:48,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 153 states have (on average 1.2156862745098038) internal successors, (186), 155 states have internal predecessors, (186), 72 states have call successors, (72), 18 states have call predecessors, (72), 19 states have return successors, (76), 71 states have call predecessors, (76), 71 states have call successors, (76) [2021-11-19 14:28:48,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 334 transitions. [2021-11-19 14:28:48,226 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 334 transitions. Word has length 85 [2021-11-19 14:28:48,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:28:48,227 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 334 transitions. [2021-11-19 14:28:48,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-19 14:28:48,228 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 334 transitions. [2021-11-19 14:28:48,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-19 14:28:48,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:28:48,231 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:28:48,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:28:48,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:28:48,457 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:28:48,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:28:48,458 INFO L85 PathProgramCache]: Analyzing trace with hash 939277799, now seen corresponding path program 1 times [2021-11-19 14:28:48,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:28:48,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [427538790] [2021-11-19 14:28:48,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:28:48,462 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:28:48,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:28:48,463 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:28:48,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:28:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:28:49,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 1485 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:28:49,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:28:49,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-19 14:28:50,920 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-19 14:28:50,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:28:51,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-19 14:28:52,232 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-19 14:28:52,232 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:28:52,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [427538790] [2021-11-19 14:28:52,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [427538790] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:28:52,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:28:52,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 18 [2021-11-19 14:28:52,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67588724] [2021-11-19 14:28:52,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:28:52,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:28:52,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:28:52,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:28:52,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-11-19 14:28:52,236 INFO L87 Difference]: Start difference. First operand 245 states and 334 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 9 states have internal predecessors, (53), 4 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-19 14:28:54,401 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:28:55,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:28:55,150 INFO L93 Difference]: Finished difference Result 499 states and 676 transitions. [2021-11-19 14:28:55,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:28:55,154 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 9 states have internal predecessors, (53), 4 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 91 [2021-11-19 14:28:55,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:28:55,157 INFO L225 Difference]: With dead ends: 499 [2021-11-19 14:28:55,158 INFO L226 Difference]: Without dead ends: 258 [2021-11-19 14:28:55,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:28:55,161 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 20 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:28:55,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 2395 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 1 Unknown, 158 Unchecked, 2.8s Time] [2021-11-19 14:28:55,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-11-19 14:28:55,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2021-11-19 14:28:55,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 165 states have (on average 1.2181818181818183) internal successors, (201), 167 states have internal predecessors, (201), 72 states have call successors, (72), 19 states have call predecessors, (72), 20 states have return successors, (77), 71 states have call predecessors, (77), 71 states have call successors, (77) [2021-11-19 14:28:55,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 350 transitions. [2021-11-19 14:28:55,194 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 350 transitions. Word has length 91 [2021-11-19 14:28:55,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:28:55,195 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 350 transitions. [2021-11-19 14:28:55,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 9 states have internal predecessors, (53), 4 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-19 14:28:55,196 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 350 transitions. [2021-11-19 14:28:55,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-19 14:28:55,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:28:55,201 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:28:55,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:28:55,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:28:55,421 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:28:55,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:28:55,422 INFO L85 PathProgramCache]: Analyzing trace with hash 207310373, now seen corresponding path program 1 times [2021-11-19 14:28:55,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:28:55,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374663846] [2021-11-19 14:28:55,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:28:55,426 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:28:55,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:28:55,428 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:28:55,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:28:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:28:56,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 1482 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:28:56,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:28:56,705 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-19 14:28:56,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:28:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-19 14:28:56,989 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:28:56,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374663846] [2021-11-19 14:28:56,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374663846] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:28:56,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:28:56,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-19 14:28:56,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670577312] [2021-11-19 14:28:56,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:28:56,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:28:56,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:28:56,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:28:56,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:28:56,992 INFO L87 Difference]: Start difference. First operand 258 states and 350 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 14:28:57,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:28:57,061 INFO L93 Difference]: Finished difference Result 502 states and 688 transitions. [2021-11-19 14:28:57,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:28:57,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 91 [2021-11-19 14:28:57,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:28:57,065 INFO L225 Difference]: With dead ends: 502 [2021-11-19 14:28:57,066 INFO L226 Difference]: Without dead ends: 264 [2021-11-19 14:28:57,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:28:57,069 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 20 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:28:57,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 973 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:28:57,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-11-19 14:28:57,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 252. [2021-11-19 14:28:57,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 160 states have (on average 1.21875) internal successors, (195), 161 states have internal predecessors, (195), 72 states have call successors, (72), 19 states have call predecessors, (72), 19 states have return successors, (76), 71 states have call predecessors, (76), 71 states have call successors, (76) [2021-11-19 14:28:57,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 343 transitions. [2021-11-19 14:28:57,098 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 343 transitions. Word has length 91 [2021-11-19 14:28:57,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:28:57,099 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 343 transitions. [2021-11-19 14:28:57,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 14:28:57,100 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 343 transitions. [2021-11-19 14:28:57,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:28:57,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:28:57,102 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:28:57,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:28:57,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:28:57,317 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:28:57,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:28:57,318 INFO L85 PathProgramCache]: Analyzing trace with hash 707673887, now seen corresponding path program 1 times [2021-11-19 14:28:57,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:28:57,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648250136] [2021-11-19 14:28:57,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:28:57,322 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:28:57,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:28:57,323 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:28:57,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:28:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:28:58,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:28:58,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:28:59,226 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-19 14:28:59,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:28:59,903 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-19 14:28:59,904 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:28:59,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648250136] [2021-11-19 14:28:59,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648250136] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:28:59,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:28:59,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-19 14:28:59,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533826253] [2021-11-19 14:28:59,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:28:59,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:28:59,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:28:59,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:28:59,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:28:59,907 INFO L87 Difference]: Start difference. First operand 252 states and 343 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 14:29:02,047 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:29:04,057 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:29:07,033 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:29:09,039 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:29:10,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:29:10,130 INFO L93 Difference]: Finished difference Result 508 states and 702 transitions. [2021-11-19 14:29:10,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:29:10,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 95 [2021-11-19 14:29:10,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:29:10,137 INFO L225 Difference]: With dead ends: 508 [2021-11-19 14:29:10,137 INFO L226 Difference]: Without dead ends: 272 [2021-11-19 14:29:10,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:29:10,140 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 42 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:29:10,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 1183 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 4 Unknown, 53 Unchecked, 10.0s Time] [2021-11-19 14:29:10,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-19 14:29:10,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 261. [2021-11-19 14:29:10,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 169 states have (on average 1.2248520710059172) internal successors, (207), 170 states have internal predecessors, (207), 72 states have call successors, (72), 19 states have call predecessors, (72), 19 states have return successors, (76), 71 states have call predecessors, (76), 71 states have call successors, (76) [2021-11-19 14:29:10,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 355 transitions. [2021-11-19 14:29:10,167 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 355 transitions. Word has length 95 [2021-11-19 14:29:10,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:29:10,167 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 355 transitions. [2021-11-19 14:29:10,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 14:29:10,168 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 355 transitions. [2021-11-19 14:29:10,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:29:10,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:10,170 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:29:10,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:29:10,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:29:10,385 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:29:10,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:10,386 INFO L85 PathProgramCache]: Analyzing trace with hash -508479839, now seen corresponding path program 1 times [2021-11-19 14:29:10,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:10,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121725884] [2021-11-19 14:29:10,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:10,389 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:10,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:10,390 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:10,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:29:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:11,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 14:29:11,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:29:14,054 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-19 14:29:14,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:29:16,315 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-19 14:29:16,315 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:29:16,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121725884] [2021-11-19 14:29:16,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121725884] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:29:16,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:29:16,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 19 [2021-11-19 14:29:16,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702266173] [2021-11-19 14:29:16,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:29:16,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:29:16,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:29:16,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:29:16,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:29:16,319 INFO L87 Difference]: Start difference. First operand 261 states and 355 transitions. Second operand has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-19 14:29:18,482 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:29:20,490 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:29:25,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:29:25,300 INFO L93 Difference]: Finished difference Result 516 states and 716 transitions. [2021-11-19 14:29:25,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:29:25,304 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 95 [2021-11-19 14:29:25,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:29:25,307 INFO L225 Difference]: With dead ends: 516 [2021-11-19 14:29:25,308 INFO L226 Difference]: Without dead ends: 270 [2021-11-19 14:29:25,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-19 14:29:25,311 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 38 mSDsluCounter, 2809 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3128 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 398 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:29:25,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 3128 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 292 Invalid, 2 Unknown, 398 Unchecked, 7.1s Time] [2021-11-19 14:29:25,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-19 14:29:25,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 266. [2021-11-19 14:29:25,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 173 states have (on average 1.2080924855491328) internal successors, (209), 175 states have internal predecessors, (209), 72 states have call successors, (72), 19 states have call predecessors, (72), 20 states have return successors, (82), 71 states have call predecessors, (82), 71 states have call successors, (82) [2021-11-19 14:29:25,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 363 transitions. [2021-11-19 14:29:25,338 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 363 transitions. Word has length 95 [2021-11-19 14:29:25,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:29:25,339 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 363 transitions. [2021-11-19 14:29:25,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-19 14:29:25,340 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 363 transitions. [2021-11-19 14:29:25,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:29:25,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:25,342 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:29:25,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:29:25,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:29:25,545 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:29:25,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:25,546 INFO L85 PathProgramCache]: Analyzing trace with hash 784574685, now seen corresponding path program 1 times [2021-11-19 14:29:25,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:25,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835317248] [2021-11-19 14:29:25,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:25,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:25,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:25,549 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:25,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:29:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:26,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:29:26,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:29:26,922 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-19 14:29:26,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:29:27,207 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-19 14:29:27,207 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:29:27,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835317248] [2021-11-19 14:29:27,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835317248] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:29:27,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:29:27,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-19 14:29:27,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293988600] [2021-11-19 14:29:27,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:29:27,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:29:27,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:29:27,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:29:27,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:29:27,210 INFO L87 Difference]: Start difference. First operand 266 states and 363 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 14:29:27,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:29:27,293 INFO L93 Difference]: Finished difference Result 520 states and 714 transitions. [2021-11-19 14:29:27,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:29:27,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 95 [2021-11-19 14:29:27,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:29:27,298 INFO L225 Difference]: With dead ends: 520 [2021-11-19 14:29:27,298 INFO L226 Difference]: Without dead ends: 270 [2021-11-19 14:29:27,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:29:27,301 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 34 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:29:27,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 964 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:29:27,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-19 14:29:27,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 262. [2021-11-19 14:29:27,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 169 states have (on average 1.1952662721893492) internal successors, (202), 171 states have internal predecessors, (202), 72 states have call successors, (72), 19 states have call predecessors, (72), 20 states have return successors, (82), 71 states have call predecessors, (82), 71 states have call successors, (82) [2021-11-19 14:29:27,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 356 transitions. [2021-11-19 14:29:27,327 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 356 transitions. Word has length 95 [2021-11-19 14:29:27,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:29:27,328 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 356 transitions. [2021-11-19 14:29:27,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 14:29:27,328 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 356 transitions. [2021-11-19 14:29:27,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:29:27,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:27,330 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:29:27,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:29:27,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:29:27,552 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:29:27,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:27,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1601934821, now seen corresponding path program 1 times [2021-11-19 14:29:27,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:27,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16381203] [2021-11-19 14:29:27,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:27,555 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:27,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:27,556 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:27,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:29:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:28,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 1489 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:29:28,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:29:28,888 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-19 14:29:28,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:29:29,306 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-19 14:29:29,306 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:29:29,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16381203] [2021-11-19 14:29:29,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16381203] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:29:29,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:29:29,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-19 14:29:29,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844645159] [2021-11-19 14:29:29,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:29:29,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:29:29,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:29:29,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:29:29,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:29:29,309 INFO L87 Difference]: Start difference. First operand 262 states and 356 transitions. Second operand has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-19 14:29:29,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:29:29,915 INFO L93 Difference]: Finished difference Result 519 states and 713 transitions. [2021-11-19 14:29:29,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:29:29,916 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 95 [2021-11-19 14:29:29,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:29:29,922 INFO L225 Difference]: With dead ends: 519 [2021-11-19 14:29:29,922 INFO L226 Difference]: Without dead ends: 271 [2021-11-19 14:29:29,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:29:29,925 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 12 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2429 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:29:29,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 2429 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:29:29,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-11-19 14:29:29,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 262. [2021-11-19 14:29:29,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 169 states have (on average 1.1952662721893492) internal successors, (202), 171 states have internal predecessors, (202), 72 states have call successors, (72), 19 states have call predecessors, (72), 20 states have return successors, (82), 71 states have call predecessors, (82), 71 states have call successors, (82) [2021-11-19 14:29:29,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 356 transitions. [2021-11-19 14:29:29,966 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 356 transitions. Word has length 95 [2021-11-19 14:29:29,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:29:29,969 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 356 transitions. [2021-11-19 14:29:29,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-19 14:29:29,970 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 356 transitions. [2021-11-19 14:29:29,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-19 14:29:29,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:29,972 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:29:30,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-19 14:29:30,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:29:30,189 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:29:30,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:30,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1257631092, now seen corresponding path program 1 times [2021-11-19 14:29:30,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:30,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946682131] [2021-11-19 14:29:30,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:30,192 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:30,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:30,193 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:30,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:29:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:31,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:29:31,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:29:31,743 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 14:29:31,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:29:32,197 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-19 14:29:32,197 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:29:32,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946682131] [2021-11-19 14:29:32,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946682131] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:29:32,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:29:32,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 14:29:32,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144055377] [2021-11-19 14:29:32,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:29:32,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:29:32,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:29:32,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:29:32,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:29:32,201 INFO L87 Difference]: Start difference. First operand 262 states and 356 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-19 14:29:32,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:29:32,541 INFO L93 Difference]: Finished difference Result 504 states and 688 transitions. [2021-11-19 14:29:32,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:29:32,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 97 [2021-11-19 14:29:32,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:29:32,545 INFO L225 Difference]: With dead ends: 504 [2021-11-19 14:29:32,545 INFO L226 Difference]: Without dead ends: 265 [2021-11-19 14:29:32,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:29:32,548 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 79 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:29:32,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 1131 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:29:32,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-19 14:29:32,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2021-11-19 14:29:32,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 171 states have (on average 1.1929824561403508) internal successors, (204), 174 states have internal predecessors, (204), 72 states have call successors, (72), 19 states have call predecessors, (72), 21 states have return successors, (87), 71 states have call predecessors, (87), 71 states have call successors, (87) [2021-11-19 14:29:32,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 363 transitions. [2021-11-19 14:29:32,578 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 363 transitions. Word has length 97 [2021-11-19 14:29:32,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:29:32,579 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 363 transitions. [2021-11-19 14:29:32,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-19 14:29:32,579 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 363 transitions. [2021-11-19 14:29:32,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-19 14:29:32,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:32,581 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:29:32,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:29:32,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:29:32,797 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:29:32,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:32,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1437086073, now seen corresponding path program 1 times [2021-11-19 14:29:32,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:32,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862588559] [2021-11-19 14:29:32,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:32,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:32,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:32,803 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:32,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:29:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:34,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:29:34,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:29:34,559 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-19 14:29:34,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:29:34,949 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-19 14:29:34,949 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:29:34,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862588559] [2021-11-19 14:29:34,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862588559] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:29:34,950 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:29:34,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-19 14:29:34,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142498913] [2021-11-19 14:29:34,950 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:29:34,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:29:34,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:29:34,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:29:34,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:29:34,952 INFO L87 Difference]: Start difference. First operand 265 states and 363 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-19 14:29:35,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:29:35,970 INFO L93 Difference]: Finished difference Result 504 states and 686 transitions. [2021-11-19 14:29:35,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:29:35,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 99 [2021-11-19 14:29:35,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:29:35,974 INFO L225 Difference]: With dead ends: 504 [2021-11-19 14:29:35,974 INFO L226 Difference]: Without dead ends: 262 [2021-11-19 14:29:35,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:29:35,977 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 148 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:29:35,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 1309 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:29:35,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-19 14:29:35,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2021-11-19 14:29:35,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 169 states have (on average 1.1893491124260356) internal successors, (201), 171 states have internal predecessors, (201), 72 states have call successors, (72), 19 states have call predecessors, (72), 20 states have return successors, (82), 71 states have call predecessors, (82), 71 states have call successors, (82) [2021-11-19 14:29:35,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 355 transitions. [2021-11-19 14:29:35,999 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 355 transitions. Word has length 99 [2021-11-19 14:29:35,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:29:35,999 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 355 transitions. [2021-11-19 14:29:36,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-19 14:29:36,000 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 355 transitions. [2021-11-19 14:29:36,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-19 14:29:36,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:36,002 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:29:36,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:29:36,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:29:36,217 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:29:36,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:36,218 INFO L85 PathProgramCache]: Analyzing trace with hash 852094212, now seen corresponding path program 1 times [2021-11-19 14:29:36,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:36,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [816496955] [2021-11-19 14:29:36,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:36,222 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:36,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:36,223 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:36,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:29:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:37,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:29:37,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:29:38,031 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-19 14:29:38,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:29:38,441 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:29:38,441 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:29:38,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [816496955] [2021-11-19 14:29:38,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [816496955] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:29:38,442 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:29:38,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-19 14:29:38,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055776906] [2021-11-19 14:29:38,442 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:29:38,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:29:38,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:29:38,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:29:38,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:29:38,444 INFO L87 Difference]: Start difference. First operand 262 states and 355 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 14:29:39,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:29:39,159 INFO L93 Difference]: Finished difference Result 495 states and 665 transitions. [2021-11-19 14:29:39,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:29:39,160 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 105 [2021-11-19 14:29:39,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:29:39,163 INFO L225 Difference]: With dead ends: 495 [2021-11-19 14:29:39,163 INFO L226 Difference]: Without dead ends: 259 [2021-11-19 14:29:39,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:29:39,166 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 139 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:29:39,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 1340 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:29:39,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-19 14:29:39,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2021-11-19 14:29:39,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 167 states have (on average 1.18562874251497) internal successors, (198), 168 states have internal predecessors, (198), 72 states have call successors, (72), 19 states have call predecessors, (72), 19 states have return successors, (77), 71 states have call predecessors, (77), 71 states have call successors, (77) [2021-11-19 14:29:39,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 347 transitions. [2021-11-19 14:29:39,188 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 347 transitions. Word has length 105 [2021-11-19 14:29:39,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:29:39,189 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 347 transitions. [2021-11-19 14:29:39,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 14:29:39,190 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 347 transitions. [2021-11-19 14:29:39,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-19 14:29:39,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:39,192 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:29:39,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:29:39,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:29:39,412 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:29:39,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:39,413 INFO L85 PathProgramCache]: Analyzing trace with hash 93753673, now seen corresponding path program 1 times [2021-11-19 14:29:39,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:39,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187878955] [2021-11-19 14:29:39,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:39,415 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:39,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:39,416 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:39,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba8c60-d6ee-475c-a4d1-f959d8b234bd/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:29:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:40,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:29:40,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:29:42,954 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:29:42,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 99 treesize of output 35 [2021-11-19 14:29:43,126 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 14:29:43,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:29:44,359 INFO L354 Elim1Store]: treesize reduction 322, result has 0.3 percent of original size [2021-11-19 14:29:44,360 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 129 treesize of output 1 [2021-11-19 14:29:54,365 WARN L227 SmtUtils]: Spent 9.55s on a formula simplification. DAG size of input: 523 DAG size of output: 269 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 14:29:54,370 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-19 14:29:54,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 128 treesize of output 771