./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c2c8100e1f648cee1922c84a2421989bafb670d4445ddc160c17e3cd878eaa49 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:40:03,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:40:03,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:40:03,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:40:03,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:40:03,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:40:03,796 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:40:03,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:40:03,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:40:03,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:40:03,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:40:03,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:40:03,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:40:03,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:40:03,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:40:03,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:40:03,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:40:03,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:40:03,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:40:03,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:40:03,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:40:03,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:40:03,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:40:03,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:40:03,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:40:03,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:40:03,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:40:03,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:40:03,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:40:03,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:40:03,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:40:03,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:40:03,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:40:03,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:40:03,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:40:03,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:40:03,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:40:03,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:40:03,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:40:03,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:40:03,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:40:03,883 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 01:40:03,935 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:40:03,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:40:03,938 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:40:03,938 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:40:03,939 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:40:03,939 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:40:03,939 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:40:03,940 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:40:03,940 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:40:03,940 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:40:03,941 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:40:03,942 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:40:03,942 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:40:03,942 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:40:03,943 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:40:03,943 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:40:03,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:40:03,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:40:03,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:40:03,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:40:03,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:40:03,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:40:03,946 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:40:03,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:40:03,946 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:40:03,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:40:03,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:40:03,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:40:03,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:40:03,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:40:03,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:40:03,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:40:03,950 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:40:03,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:40:03,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:40:03,951 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:40:03,951 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:40:03,952 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_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2c8100e1f648cee1922c84a2421989bafb670d4445ddc160c17e3cd878eaa49 [2021-11-13 01:40:04,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:40:04,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:40:04,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:40:04,272 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:40:04,273 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:40:04,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i [2021-11-13 01:40:04,363 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/data/2e22b02ab/55c5cd7ef9154a6e94fa1b9ff5d8bf3d/FLAG17c2d4f75 [2021-11-13 01:40:05,440 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:40:05,441 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i [2021-11-13 01:40:05,496 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/data/2e22b02ab/55c5cd7ef9154a6e94fa1b9ff5d8bf3d/FLAG17c2d4f75 [2021-11-13 01:40:05,816 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/data/2e22b02ab/55c5cd7ef9154a6e94fa1b9ff5d8bf3d [2021-11-13 01:40:05,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:40:05,822 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:40:05,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:40:05,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:40:05,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:40:05,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:40:05" (1/1) ... [2021-11-13 01:40:05,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59686ddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:05, skipping insertion in model container [2021-11-13 01:40:05,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:40:05" (1/1) ... [2021-11-13 01:40:05,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:40:06,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:40:06,434 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4495,4508] [2021-11-13 01:40:06,443 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4555,4568] [2021-11-13 01:40:06,472 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:40:06,479 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:40:07,548 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:07,549 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:07,550 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:07,551 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:07,552 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:07,570 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:07,571 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:07,573 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:07,574 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:08,123 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:40:08,127 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:40:08,130 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:40:08,132 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:40:08,139 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:40:08,141 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:40:08,143 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:40:08,145 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:40:08,147 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:40:08,149 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:40:08,418 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:40:08,567 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:08,568 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:08,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:40:08,738 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) [2021-11-13 01:40:08,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@719f046b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:08, skipping insertion in model container [2021-11-13 01:40:08,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:40:08,739 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:40:08,742 INFO L158 Benchmark]: Toolchain (without parser) took 2919.02ms. Allocated memory was 104.9MB in the beginning and 138.4MB in the end (delta: 33.6MB). Free memory was 63.9MB in the beginning and 92.5MB in the end (delta: -28.6MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. [2021-11-13 01:40:08,742 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 104.9MB. Free memory was 58.0MB in the beginning and 57.9MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:40:08,743 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2912.64ms. Allocated memory was 104.9MB in the beginning and 138.4MB in the end (delta: 33.6MB). Free memory was 63.9MB in the beginning and 92.5MB in the end (delta: -28.6MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. [2021-11-13 01:40:08,745 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 104.9MB. Free memory was 58.0MB in the beginning and 57.9MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2912.64ms. Allocated memory was 104.9MB in the beginning and 138.4MB in the end (delta: 33.6MB). Free memory was 63.9MB in the beginning and 92.5MB in the end (delta: -28.6MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6984]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c2c8100e1f648cee1922c84a2421989bafb670d4445ddc160c17e3cd878eaa49 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:40:11,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:40:11,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:40:11,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:40:11,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:40:11,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:40:11,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:40:11,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:40:11,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:40:11,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:40:11,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:40:11,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:40:11,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:40:11,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:40:11,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:40:11,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:40:11,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:40:11,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:40:11,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:40:11,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:40:11,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:40:11,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:40:11,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:40:11,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:40:11,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:40:11,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:40:11,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:40:11,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:40:11,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:40:11,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:40:11,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:40:11,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:40:11,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:40:11,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:40:11,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:40:11,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:40:11,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:40:11,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:40:11,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:40:11,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:40:11,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:40:11,449 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 01:40:11,492 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:40:11,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:40:11,496 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:40:11,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:40:11,497 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:40:11,497 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:40:11,497 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:40:11,498 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:40:11,498 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:40:11,498 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:40:11,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:40:11,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:40:11,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:40:11,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:40:11,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:40:11,502 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:40:11,503 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:40:11,503 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:40:11,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:40:11,503 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:40:11,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:40:11,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:40:11,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:40:11,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:40:11,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:40:11,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:40:11,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:40:11,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:40:11,506 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:40:11,506 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:40:11,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:40:11,506 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:40:11,507 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:40:11,507 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_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2c8100e1f648cee1922c84a2421989bafb670d4445ddc160c17e3cd878eaa49 [2021-11-13 01:40:11,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:40:11,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:40:11,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:40:11,958 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:40:11,959 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:40:11,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i [2021-11-13 01:40:12,039 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/data/8bad1fc0c/7b2d91052c5d44da8b59fe68acd5d37c/FLAG75c09f75b [2021-11-13 01:40:12,990 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:40:12,990 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i [2021-11-13 01:40:13,034 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/data/8bad1fc0c/7b2d91052c5d44da8b59fe68acd5d37c/FLAG75c09f75b [2021-11-13 01:40:13,365 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/data/8bad1fc0c/7b2d91052c5d44da8b59fe68acd5d37c [2021-11-13 01:40:13,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:40:13,373 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:40:13,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:40:13,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:40:13,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:40:13,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:40:13" (1/1) ... [2021-11-13 01:40:13,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@455da433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:13, skipping insertion in model container [2021-11-13 01:40:13,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:40:13" (1/1) ... [2021-11-13 01:40:13,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:40:13,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:40:13,897 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4495,4508] [2021-11-13 01:40:13,906 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4555,4568] [2021-11-13 01:40:13,940 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:40:13,949 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:40:15,178 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:15,179 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:15,179 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:15,180 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:15,182 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:15,201 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:15,202 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:15,205 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:15,206 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:15,676 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:40:15,678 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:40:15,679 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:40:15,681 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:40:15,683 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:40:15,684 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:40:15,685 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:40:15,687 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:40:15,688 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:40:15,689 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:40:15,932 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:40:16,042 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,042 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:40:16,225 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:40:16,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:40:16,301 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4495,4508] [2021-11-13 01:40:16,302 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4555,4568] [2021-11-13 01:40:16,305 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:40:16,308 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:40:16,372 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,373 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,376 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,377 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,378 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,387 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,388 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,390 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,390 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,471 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:40:16,472 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:40:16,474 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:40:16,475 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:40:16,478 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:40:16,478 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:40:16,479 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:40:16,480 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:40:16,480 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:40:16,481 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:40:16,516 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:40:16,616 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,616 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:40:16,709 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:40:16,738 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4495,4508] [2021-11-13 01:40:16,739 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4555,4568] [2021-11-13 01:40:16,741 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:40:16,747 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:40:16,795 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,796 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,796 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,797 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,797 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,804 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,804 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,805 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,806 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,871 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:40:16,872 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:40:16,873 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:40:16,874 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:40:16,875 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:40:16,876 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:40:16,877 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:40:16,877 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:40:16,878 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:40:16,879 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:40:16,906 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:40:16,971 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,972 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:17,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:40:17,346 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:40:17,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:17 WrapperNode [2021-11-13 01:40:17,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:40:17,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:40:17,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:40:17,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:40:17,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:17" (1/1) ... [2021-11-13 01:40:17,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:17" (1/1) ... [2021-11-13 01:40:17,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:40:17,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:40:17,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:40:17,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:40:17,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:17" (1/1) ... [2021-11-13 01:40:17,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:17" (1/1) ... [2021-11-13 01:40:17,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:17" (1/1) ... [2021-11-13 01:40:17,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:17" (1/1) ... [2021-11-13 01:40:17,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:17" (1/1) ... [2021-11-13 01:40:17,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:17" (1/1) ... [2021-11-13 01:40:17,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:17" (1/1) ... [2021-11-13 01:40:17,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:40:17,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:40:17,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:40:17,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:40:17,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:17" (1/1) ... [2021-11-13 01:40:17,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:40:17,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:40:17,752 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:40:17,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:40:17,803 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_clean_up [2021-11-13 01:40:17,804 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_clean_up [2021-11-13 01:40:17,804 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-13 01:40:17,804 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-13 01:40:17,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:40:17,805 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-13 01:40:17,805 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-13 01:40:17,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:40:17,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 01:40:17,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 01:40:17,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 01:40:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:40:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 01:40:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:40:17,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:40:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-13 01:40:17,807 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-13 01:40:17,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 01:40:17,807 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-13 01:40:17,807 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-13 01:40:17,807 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 01:40:17,807 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 01:40:17,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:40:17,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 01:40:17,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 01:40:17,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 01:40:17,808 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-13 01:40:17,809 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-13 01:40:32,620 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:40:32,621 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 01:40:32,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:40:32 BoogieIcfgContainer [2021-11-13 01:40:32,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:40:32,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:40:32,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:40:32,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:40:32,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:40:13" (1/3) ... [2021-11-13 01:40:32,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4832a129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:40:32, skipping insertion in model container [2021-11-13 01:40:32,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:17" (2/3) ... [2021-11-13 01:40:32,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4832a129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:40:32, skipping insertion in model container [2021-11-13 01:40:32,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:40:32" (3/3) ... [2021-11-13 01:40:32,645 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_harness.i [2021-11-13 01:40:32,652 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:40:32,652 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:40:32,724 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:40:32,731 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 [2021-11-13 01:40:32,731 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 01:40:32,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 59 states have internal predecessors, (72), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 01:40:32,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-13 01:40:32,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:40:32,776 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:40:32,777 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:40:32,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:40:32,783 INFO L85 PathProgramCache]: Analyzing trace with hash 877800461, now seen corresponding path program 1 times [2021-11-13 01:40:32,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:40:32,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687877298] [2021-11-13 01:40:32,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:40:32,810 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:40:32,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:40:32,814 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:40:32,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:40:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:40:37,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 01:40:37,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:40:37,327 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 01:40:37,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:40:37,543 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-13 01:40:37,543 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:40:37,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687877298] [2021-11-13 01:40:37,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687877298] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:40:37,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:40:37,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-13 01:40:37,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402469343] [2021-11-13 01:40:37,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:40:37,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 01:40:37,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:40:37,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 01:40:37,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:40:37,604 INFO L87 Difference]: Start difference. First operand has 84 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 59 states have internal predecessors, (72), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 01:40:37,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:40:37,658 INFO L93 Difference]: Finished difference Result 152 states and 201 transitions. [2021-11-13 01:40:37,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 01:40:37,660 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2021-11-13 01:40:37,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:40:37,674 INFO L225 Difference]: With dead ends: 152 [2021-11-13 01:40:37,674 INFO L226 Difference]: Without dead ends: 79 [2021-11-13 01:40:37,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:40:37,684 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.60ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 01:40:37,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 4.60ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 01:40:37,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-13 01:40:37,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-11-13 01:40:37,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 55 states have internal predecessors, (66), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-13 01:40:37,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2021-11-13 01:40:37,754 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 56 [2021-11-13 01:40:37,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:40:37,754 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2021-11-13 01:40:37,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 01:40:37,755 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2021-11-13 01:40:37,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-13 01:40:37,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:40:37,764 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:40:37,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:40:37,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:40:37,991 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:40:37,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:40:37,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1602789575, now seen corresponding path program 1 times [2021-11-13 01:40:38,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:40:38,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417964604] [2021-11-13 01:40:38,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:40:38,009 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:40:38,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:40:38,010 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:40:38,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:40:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:40:42,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:40:42,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:40:42,586 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 01:40:42,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:40:43,025 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-13 01:40:43,025 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:40:43,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417964604] [2021-11-13 01:40:43,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417964604] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:40:43,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:40:43,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-13 01:40:43,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778699020] [2021-11-13 01:40:43,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:40:43,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:40:43,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:40:43,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:40:43,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:40:43,029 INFO L87 Difference]: Start difference. First operand 79 states and 97 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-13 01:40:43,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:40:43,221 INFO L93 Difference]: Finished difference Result 139 states and 173 transitions. [2021-11-13 01:40:43,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:40:43,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 56 [2021-11-13 01:40:43,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:40:43,230 INFO L225 Difference]: With dead ends: 139 [2021-11-13 01:40:43,230 INFO L226 Difference]: Without dead ends: 82 [2021-11-13 01:40:43,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:40:43,236 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 28 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 129.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.28ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 156.21ms IncrementalHoareTripleChecker+Time [2021-11-13 01:40:43,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 318 Invalid, 28 Unknown, 0 Unchecked, 5.28ms Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 156.21ms Time] [2021-11-13 01:40:43,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-13 01:40:43,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-11-13 01:40:43,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 58 states have internal predecessors, (68), 16 states have call successors, (16), 8 states have call predecessors, (16), 9 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2021-11-13 01:40:43,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2021-11-13 01:40:43,261 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 56 [2021-11-13 01:40:43,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:40:43,262 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2021-11-13 01:40:43,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-13 01:40:43,262 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2021-11-13 01:40:43,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-13 01:40:43,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:40:43,271 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-13 01:40:43,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:40:43,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:40:43,473 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:40:43,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:40:43,473 INFO L85 PathProgramCache]: Analyzing trace with hash -737763694, now seen corresponding path program 1 times [2021-11-13 01:40:43,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:40:43,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563323494] [2021-11-13 01:40:43,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:40:43,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:40:43,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:40:43,480 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:40:43,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:40:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:40:47,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-13 01:40:47,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:40:48,131 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 [2021-11-13 01:40:49,470 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 01:40:49,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:40:50,620 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 [2021-11-13 01:40:51,039 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-13 01:40:51,040 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:40:51,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563323494] [2021-11-13 01:40:51,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563323494] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:40:51,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:40:51,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 18 [2021-11-13 01:40:51,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567028939] [2021-11-13 01:40:51,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:40:51,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 01:40:51,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:40:51,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 01:40:51,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-11-13 01:40:51,043 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 9 states have internal predecessors, (42), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-13 01:40:51,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:40:51,277 INFO L93 Difference]: Finished difference Result 162 states and 199 transitions. [2021-11-13 01:40:51,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 01:40:51,280 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 9 states have internal predecessors, (42), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 62 [2021-11-13 01:40:51,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:40:51,282 INFO L225 Difference]: With dead ends: 162 [2021-11-13 01:40:51,283 INFO L226 Difference]: Without dead ends: 95 [2021-11-13 01:40:51,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2021-11-13 01:40:51,285 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 31 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.95ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 119.60ms IncrementalHoareTripleChecker+Time [2021-11-13 01:40:51,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 455 Invalid, 62 Unknown, 0 Unchecked, 4.95ms Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 47 Unchecked, 119.60ms Time] [2021-11-13 01:40:51,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-13 01:40:51,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-11-13 01:40:51,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 70 states have internal predecessors, (83), 16 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2021-11-13 01:40:51,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 116 transitions. [2021-11-13 01:40:51,300 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 116 transitions. Word has length 62 [2021-11-13 01:40:51,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:40:51,301 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 116 transitions. [2021-11-13 01:40:51,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 9 states have internal predecessors, (42), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-13 01:40:51,301 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 116 transitions. [2021-11-13 01:40:51,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-13 01:40:51,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:40:51,303 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-13 01:40:51,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:40:51,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:40:51,504 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:40:51,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:40:51,504 INFO L85 PathProgramCache]: Analyzing trace with hash -78232172, now seen corresponding path program 1 times [2021-11-13 01:40:51,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:40:51,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688014679] [2021-11-13 01:40:51,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:40:51,508 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:40:51,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:40:51,510 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:40:51,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:40:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:40:55,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:40:55,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:40:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-13 01:40:55,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:40:56,113 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 01:40:56,114 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:40:56,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688014679] [2021-11-13 01:40:56,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688014679] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:40:56,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:40:56,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-13 01:40:56,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914131610] [2021-11-13 01:40:56,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:40:56,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:40:56,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:40:56,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:40:56,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:40:56,117 INFO L87 Difference]: Start difference. First operand 95 states and 116 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 01:40:56,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:40:56,224 INFO L93 Difference]: Finished difference Result 165 states and 207 transitions. [2021-11-13 01:40:56,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:40:56,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2021-11-13 01:40:56,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:40:56,229 INFO L225 Difference]: With dead ends: 165 [2021-11-13 01:40:56,232 INFO L226 Difference]: Without dead ends: 101 [2021-11-13 01:40:56,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:40:56,234 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 20 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.26ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.68ms IncrementalHoareTripleChecker+Time [2021-11-13 01:40:56,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 283 Invalid, 16 Unknown, 0 Unchecked, 3.26ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 71.68ms Time] [2021-11-13 01:40:56,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-13 01:40:56,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 89. [2021-11-13 01:40:56,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 64 states have internal predecessors, (77), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2021-11-13 01:40:56,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 109 transitions. [2021-11-13 01:40:56,262 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 109 transitions. Word has length 62 [2021-11-13 01:40:56,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:40:56,263 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 109 transitions. [2021-11-13 01:40:56,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 01:40:56,263 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 109 transitions. [2021-11-13 01:40:56,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 01:40:56,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:40:56,266 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-13 01:40:56,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:40:56,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:40:56,491 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:40:56,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:40:56,491 INFO L85 PathProgramCache]: Analyzing trace with hash -19727654, now seen corresponding path program 1 times [2021-11-13 01:40:56,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:40:56,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935497376] [2021-11-13 01:40:56,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:40:56,496 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:40:56,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:40:56,497 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:40:56,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:41:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:00,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:41:00,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:01,391 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-13 01:41:01,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:01,960 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 01:41:01,961 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:01,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935497376] [2021-11-13 01:41:01,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935497376] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:41:01,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:41:01,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-13 01:41:01,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887524961] [2021-11-13 01:41:01,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:01,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:41:01,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:41:01,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:41:01,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:41:01,963 INFO L87 Difference]: Start difference. First operand 89 states and 109 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 01:41:04,205 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:41:06,215 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:41:08,858 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:41:10,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:41:10,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:10,506 INFO L93 Difference]: Finished difference Result 171 states and 216 transitions. [2021-11-13 01:41:10,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:41:10,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2021-11-13 01:41:10,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:10,511 INFO L225 Difference]: With dead ends: 171 [2021-11-13 01:41:10,511 INFO L226 Difference]: Without dead ends: 109 [2021-11-13 01:41:10,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:41:10,513 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 42 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8202.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.18ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 8362.56ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:10,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 341 Invalid, 73 Unknown, 0 Unchecked, 3.18ms Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 3 Unknown, 23 Unchecked, 8362.56ms Time] [2021-11-13 01:41:10,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-13 01:41:10,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 98. [2021-11-13 01:41:10,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 72 states have (on average 1.2361111111111112) internal successors, (89), 73 states have internal predecessors, (89), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2021-11-13 01:41:10,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 121 transitions. [2021-11-13 01:41:10,527 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 121 transitions. Word has length 66 [2021-11-13 01:41:10,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:10,528 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 121 transitions. [2021-11-13 01:41:10,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 01:41:10,528 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 121 transitions. [2021-11-13 01:41:10,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 01:41:10,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:10,530 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-13 01:41:10,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:10,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:41:10,735 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:41:10,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:10,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1049086952, now seen corresponding path program 1 times [2021-11-13 01:41:10,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:10,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445194651] [2021-11-13 01:41:10,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:10,741 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:10,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:10,742 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:10,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 01:41:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:14,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 1789 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-13 01:41:14,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:17,121 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 01:41:17,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:19,770 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-13 01:41:19,770 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:19,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445194651] [2021-11-13 01:41:19,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445194651] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:41:19,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:41:19,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 19 [2021-11-13 01:41:19,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046840238] [2021-11-13 01:41:19,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:19,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:41:19,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:41:19,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:41:19,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-13 01:41:19,773 INFO L87 Difference]: Start difference. First operand 98 states and 121 transitions. Second operand has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-13 01:41:22,012 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:41:24,030 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:41:28,592 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:41:29,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:29,644 INFO L93 Difference]: Finished difference Result 179 states and 225 transitions. [2021-11-13 01:41:29,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 01:41:29,647 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 66 [2021-11-13 01:41:29,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:29,649 INFO L225 Difference]: With dead ends: 179 [2021-11-13 01:41:29,649 INFO L226 Difference]: Without dead ends: 107 [2021-11-13 01:41:29,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-13 01:41:29,651 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 38 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7752.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.88ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 7977.93ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:29,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 858 Invalid, 326 Unknown, 0 Unchecked, 8.88ms Time], IncrementalHoareTripleChecker [2 Valid, 148 Invalid, 2 Unknown, 174 Unchecked, 7977.93ms Time] [2021-11-13 01:41:29,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-13 01:41:29,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 100. [2021-11-13 01:41:29,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 74 states have (on average 1.2027027027027026) internal successors, (89), 75 states have internal predecessors, (89), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2021-11-13 01:41:29,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 121 transitions. [2021-11-13 01:41:29,665 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 121 transitions. Word has length 66 [2021-11-13 01:41:29,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:29,665 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 121 transitions. [2021-11-13 01:41:29,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-13 01:41:29,666 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 121 transitions. [2021-11-13 01:41:29,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 01:41:29,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:29,667 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-13 01:41:29,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:29,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:41:29,875 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:41:29,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:29,875 INFO L85 PathProgramCache]: Analyzing trace with hash -917120932, now seen corresponding path program 1 times [2021-11-13 01:41:29,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:29,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889441124] [2021-11-13 01:41:29,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:29,879 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:29,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:29,880 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:29,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 01:41:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:33,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 1790 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:41:33,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:34,157 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-13 01:41:34,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:34,354 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 01:41:34,354 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:34,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889441124] [2021-11-13 01:41:34,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889441124] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:41:34,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:41:34,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-13 01:41:34,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854144022] [2021-11-13 01:41:34,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:34,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:41:34,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:41:34,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:41:34,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:41:34,356 INFO L87 Difference]: Start difference. First operand 100 states and 121 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 01:41:34,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:34,439 INFO L93 Difference]: Finished difference Result 177 states and 217 transitions. [2021-11-13 01:41:34,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:41:34,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2021-11-13 01:41:34,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:34,444 INFO L225 Difference]: With dead ends: 177 [2021-11-13 01:41:34,444 INFO L226 Difference]: Without dead ends: 104 [2021-11-13 01:41:34,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:41:34,446 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 34 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.47ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.09ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:34,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 274 Invalid, 13 Unknown, 0 Unchecked, 1.47ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 56.09ms Time] [2021-11-13 01:41:34,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-11-13 01:41:34,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2021-11-13 01:41:34,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 71 states have internal predecessors, (82), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2021-11-13 01:41:34,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 114 transitions. [2021-11-13 01:41:34,457 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 114 transitions. Word has length 66 [2021-11-13 01:41:34,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:34,458 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 114 transitions. [2021-11-13 01:41:34,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 01:41:34,458 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 114 transitions. [2021-11-13 01:41:34,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 01:41:34,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:34,460 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-13 01:41:34,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:34,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:41:34,671 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:41:34,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:34,671 INFO L85 PathProgramCache]: Analyzing trace with hash -493474210, now seen corresponding path program 1 times [2021-11-13 01:41:34,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:34,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221094273] [2021-11-13 01:41:34,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:34,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:34,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:34,676 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:34,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 01:41:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:38,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 01:41:38,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 01:41:38,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-13 01:41:39,550 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:39,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221094273] [2021-11-13 01:41:39,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221094273] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:41:39,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:41:39,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-13 01:41:39,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526626960] [2021-11-13 01:41:39,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:39,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 01:41:39,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:41:39,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 01:41:39,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:41:39,553 INFO L87 Difference]: Start difference. First operand 96 states and 114 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-13 01:41:39,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:39,917 INFO L93 Difference]: Finished difference Result 177 states and 211 transitions. [2021-11-13 01:41:39,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 01:41:39,918 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 66 [2021-11-13 01:41:39,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:39,919 INFO L225 Difference]: With dead ends: 177 [2021-11-13 01:41:39,920 INFO L226 Difference]: Without dead ends: 106 [2021-11-13 01:41:39,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:41:39,921 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 12 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 222.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.64ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 256.88ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:39,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 671 Invalid, 92 Unknown, 0 Unchecked, 3.64ms Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 256.88ms Time] [2021-11-13 01:41:39,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-13 01:41:39,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 96. [2021-11-13 01:41:39,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 71 states have internal predecessors, (82), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2021-11-13 01:41:39,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 114 transitions. [2021-11-13 01:41:39,933 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 114 transitions. Word has length 66 [2021-11-13 01:41:39,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:39,934 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 114 transitions. [2021-11-13 01:41:39,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-13 01:41:39,934 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 114 transitions. [2021-11-13 01:41:39,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-13 01:41:39,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:39,936 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-13 01:41:39,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:40,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:41:40,147 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:41:40,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:40,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1295716771, now seen corresponding path program 1 times [2021-11-13 01:41:40,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:40,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024937012] [2021-11-13 01:41:40,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:40,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:40,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:40,152 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:40,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 01:41:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:44,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:41:44,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:44,529 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-13 01:41:44,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-13 01:41:45,318 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:45,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024937012] [2021-11-13 01:41:45,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024937012] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:45,318 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:45,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-11-13 01:41:45,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909760520] [2021-11-13 01:41:45,319 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:45,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:41:45,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:41:45,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:41:45,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:41:45,320 INFO L87 Difference]: Start difference. First operand 96 states and 114 transitions. Second operand has 8 states, 6 states have (on average 7.666666666666667) internal successors, (46), 8 states have internal predecessors, (46), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-13 01:41:46,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:41:47,962 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:41:49,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:49,072 INFO L93 Difference]: Finished difference Result 122 states and 146 transitions. [2021-11-13 01:41:49,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:41:49,075 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 7.666666666666667) internal successors, (46), 8 states have internal predecessors, (46), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 68 [2021-11-13 01:41:49,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:49,076 INFO L225 Difference]: With dead ends: 122 [2021-11-13 01:41:49,077 INFO L226 Difference]: Without dead ends: 96 [2021-11-13 01:41:49,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:41:49,078 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 45 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3606.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.71ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3713.36ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:49,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 488 Invalid, 70 Unknown, 0 Unchecked, 2.71ms Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 3713.36ms Time] [2021-11-13 01:41:49,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-13 01:41:49,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-11-13 01:41:49,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 70 states have (on average 1.1571428571428573) internal successors, (81), 71 states have internal predecessors, (81), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2021-11-13 01:41:49,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 113 transitions. [2021-11-13 01:41:49,089 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 113 transitions. Word has length 68 [2021-11-13 01:41:49,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:49,089 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 113 transitions. [2021-11-13 01:41:49,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 7.666666666666667) internal successors, (46), 8 states have internal predecessors, (46), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-13 01:41:49,090 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 113 transitions. [2021-11-13 01:41:49,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-13 01:41:49,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:49,092 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-13 01:41:49,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:49,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:41:49,315 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:41:49,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:49,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1525672722, now seen corresponding path program 1 times [2021-11-13 01:41:49,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:49,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911447804] [2021-11-13 01:41:49,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:49,319 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:49,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:49,320 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:49,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 01:41:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:53,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-13 01:41:53,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:55,752 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-13 01:41:55,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:12,953 WARN L227 SmtUtils]: Spent 11.85s on a formula simplification. DAG size of input: 526 DAG size of output: 272 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-13 01:42:12,960 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-13 01:42:12,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 132 treesize of output 771 [2021-11-13 01:51:29,442 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-13 01:51:29,443 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:51:29,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911447804] [2021-11-13 01:51:29,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911447804] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:51:29,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1306705338] [2021-11-13 01:51:29,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:51:29,444 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:51:29,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:51:29,456 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:51:29,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-13 01:51:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:51:34,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 01:51:34,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:51:34,836 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 [2021-11-13 01:51:38,090 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 01:51:38,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:51:39,682 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 [2021-11-13 01:51:40,453 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-13 01:51:40,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1306705338] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:51:40,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-13 01:51:40,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12, 12, 11] total 32 [2021-11-13 01:51:40,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409286752] [2021-11-13 01:51:40,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:51:40,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 01:51:40,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:51:40,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 01:51:40,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=899, Unknown=0, NotChecked=0, Total=992 [2021-11-13 01:51:40,456 INFO L87 Difference]: Start difference. First operand 96 states and 113 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 8 states have internal predecessors, (44), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-13 01:51:42,734 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:51:44,748 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:51:46,764 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:51:50,412 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:51:52,477 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:51:54,491 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:51:56,082 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:51:56,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:51:56,715 INFO L93 Difference]: Finished difference Result 114 states and 134 transitions. [2021-11-13 01:51:56,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 01:51:56,716 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 8 states have internal predecessors, (44), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 74 [2021-11-13 01:51:56,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:51:56,717 INFO L225 Difference]: With dead ends: 114 [2021-11-13 01:51:56,717 INFO L226 Difference]: Without dead ends: 97 [2021-11-13 01:51:56,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 258 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=114, Invalid=1146, Unknown=0, NotChecked=0, Total=1260 [2021-11-13 01:51:56,718 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 69 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 28 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14726.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.96ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15077.18ms IncrementalHoareTripleChecker+Time [2021-11-13 01:51:56,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 179 Invalid, 431 Unknown, 0 Unchecked, 6.96ms Time], IncrementalHoareTripleChecker [28 Valid, 398 Invalid, 5 Unknown, 0 Unchecked, 15077.18ms Time] [2021-11-13 01:51:56,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-13 01:51:56,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-11-13 01:51:56,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 72 states have internal predecessors, (82), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2021-11-13 01:51:56,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 114 transitions. [2021-11-13 01:51:56,729 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 114 transitions. Word has length 74 [2021-11-13 01:51:56,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:51:56,729 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 114 transitions. [2021-11-13 01:51:56,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 8 states have internal predecessors, (44), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-13 01:51:56,730 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 114 transitions. [2021-11-13 01:51:56,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-13 01:51:56,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:51:56,732 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-13 01:51:56,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-13 01:51:56,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 01:51:57,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:51:57,148 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:51:57,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:51:57,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1918699732, now seen corresponding path program 1 times [2021-11-13 01:51:57,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:51:57,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75511742] [2021-11-13 01:51:57,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:51:57,153 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:51:57,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:51:57,154 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:51:57,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0baf16-0317-460c-84cc-989ec921ab4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 01:52:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:52:01,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 1801 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-13 01:52:01,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:52:03,236 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-13 01:52:03,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:52:19,417 WARN L227 SmtUtils]: Spent 11.67s on a formula simplification. DAG size of input: 526 DAG size of output: 272 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-13 01:52:19,420 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-13 01:52:19,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 132 treesize of output 771