./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_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_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/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_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/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_0952ccda-14b4-4b9b-ba39-1da071a3adf5/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 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:30:37,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:30:37,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:30:37,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:30:37,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:30:37,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:30:37,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:30:37,153 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:30:37,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:30:37,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:30:37,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:30:37,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:30:37,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:30:37,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:30:37,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:30:37,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:30:37,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:30:37,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:30:37,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:30:37,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:30:37,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:30:37,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:30:37,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:30:37,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:30:37,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:30:37,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:30:37,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:30:37,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:30:37,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:30:37,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:30:37,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:30:37,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:30:37,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:30:37,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:30:37,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:30:37,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:30:37,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:30:37,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:30:37,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:30:37,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:30:37,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:30:37,200 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 01:30:37,228 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:30:37,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:30:37,230 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:30:37,230 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:30:37,231 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:30:37,231 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:30:37,232 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:30:37,232 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:30:37,233 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:30:37,233 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:30:37,234 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:30:37,234 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:30:37,235 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:30:37,235 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:30:37,236 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:30:37,236 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:30:37,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:30:37,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:30:37,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:30:37,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:30:37,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:30:37,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:30:37,240 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:30:37,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:30:37,240 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:30:37,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:30:37,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:30:37,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:30:37,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:30:37,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:30:37,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:30:37,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:30:37,243 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:30:37,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:30:37,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:30:37,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:30:37,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:30:37,244 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_0952ccda-14b4-4b9b-ba39-1da071a3adf5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd [2021-11-13 01:30:37,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:30:37,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:30:37,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:30:37,528 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:30:37,529 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:30:37,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-11-13 01:30:37,617 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/data/e44cb93d8/7d59d4368e7d441aabad4d94bac89430/FLAG12d6e3540 [2021-11-13 01:30:38,552 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:30:38,553 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-11-13 01:30:38,604 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/data/e44cb93d8/7d59d4368e7d441aabad4d94bac89430/FLAG12d6e3540 [2021-11-13 01:30:38,997 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/data/e44cb93d8/7d59d4368e7d441aabad4d94bac89430 [2021-11-13 01:30:38,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:30:39,001 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:30:39,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:30:39,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:30:39,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:30:39,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:38" (1/1) ... [2021-11-13 01:30:39,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bd5ab31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:39, skipping insertion in model container [2021-11-13 01:30:39,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:38" (1/1) ... [2021-11-13 01:30:39,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:30:39,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:30:39,532 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_0952ccda-14b4-4b9b-ba39-1da071a3adf5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4501,4514] [2021-11-13 01:30:39,543 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_0952ccda-14b4-4b9b-ba39-1da071a3adf5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4561,4574] [2021-11-13 01:30:39,577 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:30:39,586 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:30:40,726 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:40,727 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:40,727 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:40,728 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:40,730 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:40,762 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:40,767 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:40,774 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:40,775 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:41,274 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:30:41,276 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:30:41,278 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:30:41,280 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:30:41,282 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:30:41,283 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:30:41,284 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:30:41,285 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:30:41,286 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:30:41,287 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:30:41,501 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:30:41,653 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:41,666 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:41,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:30:41,859 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 01:30:41,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5c4fa505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:41, skipping insertion in model container [2021-11-13 01:30:41,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:30:41,861 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:30:41,863 INFO L158 Benchmark]: Toolchain (without parser) took 2860.77ms. Allocated memory was 111.1MB in the beginning and 148.9MB in the end (delta: 37.7MB). Free memory was 71.3MB in the beginning and 103.3MB in the end (delta: -32.0MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. [2021-11-13 01:30:41,863 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 111.1MB. Free memory is still 65.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:30:41,864 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2857.68ms. Allocated memory was 111.1MB in the beginning and 148.9MB in the end (delta: 37.7MB). Free memory was 71.3MB in the beginning and 103.3MB in the end (delta: -32.0MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. [2021-11-13 01:30:41,866 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 111.1MB. Free memory is still 65.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2857.68ms. Allocated memory was 111.1MB in the beginning and 148.9MB in the end (delta: 37.7MB). Free memory was 71.3MB in the beginning and 103.3MB in the end (delta: -32.0MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6990]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/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_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/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_0952ccda-14b4-4b9b-ba39-1da071a3adf5/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 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:30:44,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:30:44,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:30:44,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:30:44,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:30:44,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:30:44,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:30:44,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:30:44,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:30:44,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:30:44,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:30:44,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:30:44,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:30:44,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:30:44,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:30:44,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:30:44,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:30:44,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:30:44,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:30:44,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:30:44,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:30:44,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:30:44,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:30:44,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:30:44,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:30:44,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:30:44,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:30:44,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:30:44,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:30:44,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:30:44,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:30:44,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:30:44,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:30:44,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:30:44,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:30:44,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:30:44,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:30:44,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:30:44,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:30:44,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:30:44,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:30:44,474 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 01:30:44,526 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:30:44,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:30:44,527 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:30:44,527 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:30:44,527 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:30:44,528 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:30:44,528 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:30:44,528 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:30:44,528 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:30:44,528 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:30:44,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:30:44,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:30:44,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:30:44,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:30:44,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:30:44,533 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:30:44,533 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:30:44,533 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:30:44,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:30:44,534 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:30:44,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:30:44,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:30:44,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:30:44,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:30:44,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:30:44,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:30:44,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:30:44,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:30:44,537 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:30:44,537 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:30:44,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:30:44,537 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:30:44,537 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:30:44,538 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_0952ccda-14b4-4b9b-ba39-1da071a3adf5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd [2021-11-13 01:30:44,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:30:44,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:30:45,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:30:45,003 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:30:45,004 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:30:45,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-11-13 01:30:45,092 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/data/3d7cbfee6/c27e88be1cee41b5a26da9c2f5d09659/FLAG201e9c4c9 [2021-11-13 01:30:46,199 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:30:46,200 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-11-13 01:30:46,259 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/data/3d7cbfee6/c27e88be1cee41b5a26da9c2f5d09659/FLAG201e9c4c9 [2021-11-13 01:30:46,591 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/data/3d7cbfee6/c27e88be1cee41b5a26da9c2f5d09659 [2021-11-13 01:30:46,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:30:46,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:30:46,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:30:46,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:30:46,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:30:46,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:46" (1/1) ... [2021-11-13 01:30:46,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b21bc3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:46, skipping insertion in model container [2021-11-13 01:30:46,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:46" (1/1) ... [2021-11-13 01:30:46,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:30:46,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:30:47,120 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_0952ccda-14b4-4b9b-ba39-1da071a3adf5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4501,4514] [2021-11-13 01:30:47,129 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_0952ccda-14b4-4b9b-ba39-1da071a3adf5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4561,4574] [2021-11-13 01:30:47,164 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:30:47,173 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:30:48,648 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:48,649 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:48,649 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:48,651 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:48,652 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:48,669 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:48,670 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:48,672 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:48,673 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:49,206 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:30:49,208 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:30:49,209 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:30:49,211 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:30:49,213 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:30:49,214 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:30:49,215 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:30:49,217 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:30:49,218 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:30:49,219 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:30:49,446 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:30:49,584 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:49,585 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:49,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:30:49,841 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:30:49,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:30:49,954 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_0952ccda-14b4-4b9b-ba39-1da071a3adf5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4501,4514] [2021-11-13 01:30:49,955 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_0952ccda-14b4-4b9b-ba39-1da071a3adf5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4561,4574] [2021-11-13 01:30:49,957 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:30:49,960 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:30:50,037 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:50,039 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:50,039 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:50,040 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:50,041 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:50,058 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:50,064 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:50,065 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:50,067 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:50,132 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:30:50,133 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:30:50,134 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:30:50,135 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:30:50,136 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:30:50,140 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:30:50,140 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:30:50,141 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:30:50,141 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:30:50,141 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:30:50,187 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:30:50,286 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:50,292 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:50,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:30:50,390 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:30:50,419 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_0952ccda-14b4-4b9b-ba39-1da071a3adf5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4501,4514] [2021-11-13 01:30:50,420 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_0952ccda-14b4-4b9b-ba39-1da071a3adf5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4561,4574] [2021-11-13 01:30:50,421 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:30:50,422 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:30:50,474 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:50,475 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:50,475 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:50,476 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:50,501 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:50,509 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:50,509 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:50,510 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:50,511 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:50,549 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:30:50,550 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:30:50,551 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:30:50,551 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:30:50,553 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:30:50,554 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:30:50,555 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:30:50,556 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:30:50,557 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:30:50,557 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:30:50,586 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:30:50,671 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:50,672 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:50,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:30:51,115 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:30:51,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:51 WrapperNode [2021-11-13 01:30:51,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:30:51,118 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:30:51,118 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:30:51,119 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:30:51,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:51" (1/1) ... [2021-11-13 01:30:51,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:51" (1/1) ... [2021-11-13 01:30:51,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:30:51,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:30:51,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:30:51,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:30:51,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:51" (1/1) ... [2021-11-13 01:30:51,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:51" (1/1) ... [2021-11-13 01:30:51,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:51" (1/1) ... [2021-11-13 01:30:51,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:51" (1/1) ... [2021-11-13 01:30:51,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:51" (1/1) ... [2021-11-13 01:30:51,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:51" (1/1) ... [2021-11-13 01:30:51,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:51" (1/1) ... [2021-11-13 01:30:51,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:30:51,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:30:51,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:30:51,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:30:51,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:51" (1/1) ... [2021-11-13 01:30:51,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:30:51,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:30:51,721 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:30:51,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:30:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-13 01:30:51,779 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-13 01:30:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-13 01:30:51,779 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-13 01:30:51,780 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 01:30:51,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:30:51,780 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-13 01:30:51,780 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-13 01:30:51,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:30:51,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 01:30:51,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 01:30:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 01:30:51,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 01:30:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:30:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-13 01:30:51,782 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-13 01:30:51,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 01:30:51,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:30:51,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:30:51,783 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-13 01:30:51,783 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-13 01:30:51,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 01:30:51,784 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-13 01:30:51,784 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-13 01:30:51,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 01:30:51,785 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 01:30:51,785 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 01:30:51,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:30:51,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 01:30:51,785 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2021-11-13 01:30:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2021-11-13 01:30:51,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 01:30:51,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 01:30:51,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 01:30:51,787 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-13 01:30:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-13 01:30:51,787 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-13 01:30:51,788 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-13 01:31:06,747 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:31:06,747 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 01:31:06,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:31:06 BoogieIcfgContainer [2021-11-13 01:31:06,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:31:06,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:31:06,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:31:06,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:31:06,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:30:46" (1/3) ... [2021-11-13 01:31:06,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b9205d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:31:06, skipping insertion in model container [2021-11-13 01:31:06,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:51" (2/3) ... [2021-11-13 01:31:06,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b9205d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:31:06, skipping insertion in model container [2021-11-13 01:31:06,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:31:06" (3/3) ... [2021-11-13 01:31:06,759 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_byte_buf_harness.i [2021-11-13 01:31:06,765 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:31:06,765 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:31:06,815 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:31:06,822 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 01:31:06,823 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 01:31:06,845 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 107 states have internal predecessors, (133), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-11-13 01:31:06,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-13 01:31:06,859 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:06,861 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:06,861 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:06,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:06,867 INFO L85 PathProgramCache]: Analyzing trace with hash 60600436, now seen corresponding path program 1 times [2021-11-13 01:31:06,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:06,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042455442] [2021-11-13 01:31:06,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:06,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:06,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:06,910 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:06,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:31:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:11,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 1967 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 01:31:11,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:11,991 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-13 01:31:11,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:12,407 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-13 01:31:12,408 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:12,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042455442] [2021-11-13 01:31:12,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042455442] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:31:12,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:31:12,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-13 01:31:12,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641851878] [2021-11-13 01:31:12,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:12,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 01:31:12,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:12,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 01:31:12,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:31:12,452 INFO L87 Difference]: Start difference. First operand has 161 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 107 states have internal predecessors, (133), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 01:31:12,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:12,502 INFO L93 Difference]: Finished difference Result 318 states and 459 transitions. [2021-11-13 01:31:12,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 01:31:12,504 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 127 [2021-11-13 01:31:12,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:12,516 INFO L225 Difference]: With dead ends: 318 [2021-11-13 01:31:12,516 INFO L226 Difference]: Without dead ends: 155 [2021-11-13 01:31:12,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 252 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 01:31:12,526 INFO L933 BasicCegarLoop]: 215 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, 215 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.78ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:12,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 2.78ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 01:31:12,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-13 01:31:12,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-11-13 01:31:12,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 101 states have (on average 1.2277227722772277) internal successors, (124), 102 states have internal predecessors, (124), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-11-13 01:31:12,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 207 transitions. [2021-11-13 01:31:12,588 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 207 transitions. Word has length 127 [2021-11-13 01:31:12,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:12,589 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 207 transitions. [2021-11-13 01:31:12,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 01:31:12,589 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 207 transitions. [2021-11-13 01:31:12,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-13 01:31:12,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:12,594 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:12,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-13 01:31:12,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:12,795 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:12,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:12,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1048890326, now seen corresponding path program 1 times [2021-11-13 01:31:12,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:12,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217973260] [2021-11-13 01:31:12,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:12,802 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:12,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:12,803 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:12,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:31:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:17,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 1967 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:31:17,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:18,077 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-11-13 01:31:18,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-11-13 01:31:18,785 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:18,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217973260] [2021-11-13 01:31:18,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217973260] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:31:18,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:31:18,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-13 01:31:18,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493847969] [2021-11-13 01:31:18,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:18,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:31:18,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:18,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:31:18,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:31:18,789 INFO L87 Difference]: Start difference. First operand 155 states and 207 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 01:31:19,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:19,052 INFO L93 Difference]: Finished difference Result 301 states and 403 transitions. [2021-11-13 01:31:19,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:31:19,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 127 [2021-11-13 01:31:19,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:19,064 INFO L225 Difference]: With dead ends: 301 [2021-11-13 01:31:19,065 INFO L226 Difference]: Without dead ends: 158 [2021-11-13 01:31:19,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 249 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 01:31:19,069 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 58 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 193.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.12ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 220.12ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:19,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 503 Invalid, 33 Unknown, 0 Unchecked, 7.12ms Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 220.12ms Time] [2021-11-13 01:31:19,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-13 01:31:19,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-11-13 01:31:19,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 103 states have (on average 1.2233009708737863) internal successors, (126), 105 states have internal predecessors, (126), 42 states have call successors, (42), 11 states have call predecessors, (42), 12 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2021-11-13 01:31:19,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 211 transitions. [2021-11-13 01:31:19,121 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 211 transitions. Word has length 127 [2021-11-13 01:31:19,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:19,121 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 211 transitions. [2021-11-13 01:31:19,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 01:31:19,122 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 211 transitions. [2021-11-13 01:31:19,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-13 01:31:19,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:19,131 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:19,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:19,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:19,332 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:19,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:19,333 INFO L85 PathProgramCache]: Analyzing trace with hash -681088923, now seen corresponding path program 1 times [2021-11-13 01:31:19,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:19,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27935683] [2021-11-13 01:31:19,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:19,339 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:19,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:19,340 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:19,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:31:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:23,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 1971 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:31:23,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:24,571 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-13 01:31:24,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:25,226 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-13 01:31:25,226 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:25,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27935683] [2021-11-13 01:31:25,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27935683] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:31:25,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:31:25,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-13 01:31:25,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738979396] [2021-11-13 01:31:25,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:25,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:31:25,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:25,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:31:25,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:31:25,229 INFO L87 Difference]: Start difference. First operand 158 states and 211 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-13 01:31:25,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:25,437 INFO L93 Difference]: Finished difference Result 282 states and 381 transitions. [2021-11-13 01:31:25,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:31:25,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 129 [2021-11-13 01:31:25,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:25,441 INFO L225 Difference]: With dead ends: 282 [2021-11-13 01:31:25,442 INFO L226 Difference]: Without dead ends: 161 [2021-11-13 01:31:25,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:31:25,444 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 57 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 142.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.71ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 183.39ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:25,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 505 Invalid, 31 Unknown, 0 Unchecked, 4.71ms Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 183.39ms Time] [2021-11-13 01:31:25,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-11-13 01:31:25,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2021-11-13 01:31:25,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 108 states have internal predecessors, (128), 42 states have call successors, (42), 11 states have call predecessors, (42), 13 states have return successors, (45), 41 states have call predecessors, (45), 41 states have call successors, (45) [2021-11-13 01:31:25,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 215 transitions. [2021-11-13 01:31:25,465 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 215 transitions. Word has length 129 [2021-11-13 01:31:25,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:25,465 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 215 transitions. [2021-11-13 01:31:25,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-13 01:31:25,466 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 215 transitions. [2021-11-13 01:31:25,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-13 01:31:25,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:25,469 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:25,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:25,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:25,695 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:25,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:25,695 INFO L85 PathProgramCache]: Analyzing trace with hash 595972048, now seen corresponding path program 1 times [2021-11-13 01:31:25,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:25,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279279148] [2021-11-13 01:31:25,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:25,699 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:25,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:25,700 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:25,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:31:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:29,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 1984 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-13 01:31:29,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:30,371 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 01:31:31,462 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-13 01:31:31,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:32,514 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 01:31:32,900 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-13 01:31:32,900 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:32,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279279148] [2021-11-13 01:31:32,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279279148] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:31:32,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:31:32,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 19 [2021-11-13 01:31:32,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068472221] [2021-11-13 01:31:32,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:32,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:31:32,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:32,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:31:32,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-13 01:31:32,902 INFO L87 Difference]: Start difference. First operand 161 states and 215 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 10 states have internal predecessors, (64), 5 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2021-11-13 01:31:33,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:33,257 INFO L93 Difference]: Finished difference Result 305 states and 407 transitions. [2021-11-13 01:31:33,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 01:31:33,258 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 10 states have internal predecessors, (64), 5 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 135 [2021-11-13 01:31:33,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:33,260 INFO L225 Difference]: With dead ends: 305 [2021-11-13 01:31:33,260 INFO L226 Difference]: Without dead ends: 174 [2021-11-13 01:31:33,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:31:33,262 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 23 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 207.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.45ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 232.62ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:33,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 1468 Invalid, 124 Unknown, 0 Unchecked, 9.45ms Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 91 Unchecked, 232.62ms Time] [2021-11-13 01:31:33,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-11-13 01:31:33,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2021-11-13 01:31:33,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 117 states have (on average 1.2222222222222223) internal successors, (143), 120 states have internal predecessors, (143), 42 states have call successors, (42), 12 states have call predecessors, (42), 14 states have return successors, (46), 41 states have call predecessors, (46), 41 states have call successors, (46) [2021-11-13 01:31:33,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 231 transitions. [2021-11-13 01:31:33,281 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 231 transitions. Word has length 135 [2021-11-13 01:31:33,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:33,282 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 231 transitions. [2021-11-13 01:31:33,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 10 states have internal predecessors, (64), 5 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2021-11-13 01:31:33,282 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 231 transitions. [2021-11-13 01:31:33,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-13 01:31:33,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:33,285 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:33,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:33,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:33,499 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:33,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:33,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1964890798, now seen corresponding path program 1 times [2021-11-13 01:31:33,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:33,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997628564] [2021-11-13 01:31:33,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:33,503 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:33,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:33,504 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:33,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:31:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:37,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 1981 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:31:37,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:38,041 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-13 01:31:38,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:38,347 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-13 01:31:38,347 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:38,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997628564] [2021-11-13 01:31:38,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997628564] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:31:38,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:31:38,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-13 01:31:38,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926202279] [2021-11-13 01:31:38,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:38,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:31:38,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:38,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:31:38,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:31:38,350 INFO L87 Difference]: Start difference. First operand 174 states and 231 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 01:31:38,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:38,431 INFO L93 Difference]: Finished difference Result 308 states and 416 transitions. [2021-11-13 01:31:38,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:31:38,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 135 [2021-11-13 01:31:38,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:38,434 INFO L225 Difference]: With dead ends: 308 [2021-11-13 01:31:38,435 INFO L226 Difference]: Without dead ends: 180 [2021-11-13 01:31:38,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 266 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 01:31:38,436 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 20 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.81ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.22ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:38,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 613 Invalid, 16 Unknown, 0 Unchecked, 2.81ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 52.22ms Time] [2021-11-13 01:31:38,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-13 01:31:38,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 168. [2021-11-13 01:31:38,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 112 states have (on average 1.2232142857142858) internal successors, (137), 114 states have internal predecessors, (137), 42 states have call successors, (42), 12 states have call predecessors, (42), 13 states have return successors, (45), 41 states have call predecessors, (45), 41 states have call successors, (45) [2021-11-13 01:31:38,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 224 transitions. [2021-11-13 01:31:38,453 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 224 transitions. Word has length 135 [2021-11-13 01:31:38,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:38,454 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 224 transitions. [2021-11-13 01:31:38,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 01:31:38,454 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 224 transitions. [2021-11-13 01:31:38,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-13 01:31:38,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:38,456 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:38,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:38,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:38,679 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:38,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:38,679 INFO L85 PathProgramCache]: Analyzing trace with hash -166953128, now seen corresponding path program 1 times [2021-11-13 01:31:38,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:38,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003108306] [2021-11-13 01:31:38,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:38,683 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:38,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:38,684 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:38,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 01:31:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:42,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 1993 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:31:42,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-13 01:31:43,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:44,369 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-13 01:31:44,369 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:44,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003108306] [2021-11-13 01:31:44,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003108306] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:31:44,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:31:44,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-13 01:31:44,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479264012] [2021-11-13 01:31:44,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:44,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:31:44,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:44,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:31:44,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:31:44,371 INFO L87 Difference]: Start difference. First operand 168 states and 224 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 01:31:46,576 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:31:48,595 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:31:50,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:50,084 INFO L93 Difference]: Finished difference Result 314 states and 427 transitions. [2021-11-13 01:31:50,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:31:50,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 139 [2021-11-13 01:31:50,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:50,089 INFO L225 Difference]: With dead ends: 314 [2021-11-13 01:31:50,089 INFO L226 Difference]: Without dead ends: 188 [2021-11-13 01:31:50,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:31:50,092 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 42 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5319.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.73ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 5526.24ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:50,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 724 Invalid, 132 Unknown, 0 Unchecked, 3.73ms Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 2 Unknown, 42 Unchecked, 5526.24ms Time] [2021-11-13 01:31:50,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-13 01:31:50,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 177. [2021-11-13 01:31:50,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 121 states have (on average 1.2314049586776858) internal successors, (149), 123 states have internal predecessors, (149), 42 states have call successors, (42), 12 states have call predecessors, (42), 13 states have return successors, (45), 41 states have call predecessors, (45), 41 states have call successors, (45) [2021-11-13 01:31:50,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 236 transitions. [2021-11-13 01:31:50,107 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 236 transitions. Word has length 139 [2021-11-13 01:31:50,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:50,108 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 236 transitions. [2021-11-13 01:31:50,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 01:31:50,108 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 236 transitions. [2021-11-13 01:31:50,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-13 01:31:50,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:50,111 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:50,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:50,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:50,319 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:50,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:50,319 INFO L85 PathProgramCache]: Analyzing trace with hash 2050677270, now seen corresponding path program 1 times [2021-11-13 01:31:50,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:50,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183469414] [2021-11-13 01:31:50,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:50,322 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:50,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:50,323 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:50,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 01:31:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:54,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 1990 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-13 01:31:54,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-13 01:31:56,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:58,782 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-11-13 01:31:58,782 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:58,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183469414] [2021-11-13 01:31:58,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183469414] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:31:58,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:31:58,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 19 [2021-11-13 01:31:58,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426597058] [2021-11-13 01:31:58,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:58,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:31:58,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:58,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:31:58,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-13 01:31:58,784 INFO L87 Difference]: Start difference. First operand 177 states and 236 transitions. Second operand has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-13 01:32:00,995 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:32:03,011 WARN L515 Checker$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 01:32:06,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:06,712 INFO L93 Difference]: Finished difference Result 322 states and 438 transitions. [2021-11-13 01:32:06,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 01:32:06,715 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 139 [2021-11-13 01:32:06,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:06,718 INFO L225 Difference]: With dead ends: 322 [2021-11-13 01:32:06,718 INFO L226 Difference]: Without dead ends: 186 [2021-11-13 01:32:06,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 258 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-13 01:32:06,720 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 38 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5936.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.31ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 309 IncrementalHoareTripleChecker+Unchecked, 6236.80ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:06,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 1869 Invalid, 553 Unknown, 0 Unchecked, 8.31ms Time], IncrementalHoareTripleChecker [2 Valid, 240 Invalid, 2 Unknown, 309 Unchecked, 6236.80ms Time] [2021-11-13 01:32:06,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-13 01:32:06,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 182. [2021-11-13 01:32:06,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 125 states have (on average 1.208) internal successors, (151), 128 states have internal predecessors, (151), 42 states have call successors, (42), 12 states have call predecessors, (42), 14 states have return successors, (48), 41 states have call predecessors, (48), 41 states have call successors, (48) [2021-11-13 01:32:06,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 241 transitions. [2021-11-13 01:32:06,735 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 241 transitions. Word has length 139 [2021-11-13 01:32:06,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:06,736 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 241 transitions. [2021-11-13 01:32:06,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-13 01:32:06,737 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 241 transitions. [2021-11-13 01:32:06,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-13 01:32:06,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:06,739 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:32:06,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:06,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:06,955 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:06,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:06,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1224791206, now seen corresponding path program 1 times [2021-11-13 01:32:06,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:06,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622181438] [2021-11-13 01:32:06,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:06,959 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:06,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:06,959 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:06,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 01:32:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:11,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 1991 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:32:11,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-13 01:32:11,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:11,762 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-13 01:32:11,762 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:11,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622181438] [2021-11-13 01:32:11,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622181438] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:32:11,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:32:11,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-13 01:32:11,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432424754] [2021-11-13 01:32:11,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:11,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:32:11,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:11,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:32:11,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:32:11,764 INFO L87 Difference]: Start difference. First operand 182 states and 241 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 01:32:11,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:11,869 INFO L93 Difference]: Finished difference Result 326 states and 436 transitions. [2021-11-13 01:32:11,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:32:11,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 139 [2021-11-13 01:32:11,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:11,872 INFO L225 Difference]: With dead ends: 326 [2021-11-13 01:32:11,873 INFO L226 Difference]: Without dead ends: 186 [2021-11-13 01:32:11,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 274 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 01:32:11,874 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 34 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.76ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.51ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:11,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 604 Invalid, 13 Unknown, 0 Unchecked, 1.76ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 72.51ms Time] [2021-11-13 01:32:11,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-13 01:32:11,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 178. [2021-11-13 01:32:11,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 121 states have (on average 1.1900826446280992) internal successors, (144), 124 states have internal predecessors, (144), 42 states have call successors, (42), 12 states have call predecessors, (42), 14 states have return successors, (48), 41 states have call predecessors, (48), 41 states have call successors, (48) [2021-11-13 01:32:11,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 234 transitions. [2021-11-13 01:32:11,888 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 234 transitions. Word has length 139 [2021-11-13 01:32:11,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:11,889 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 234 transitions. [2021-11-13 01:32:11,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 01:32:11,889 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 234 transitions. [2021-11-13 01:32:11,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-13 01:32:11,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:11,892 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:32:11,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:12,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:12,107 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:12,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:12,107 INFO L85 PathProgramCache]: Analyzing trace with hash -984551460, now seen corresponding path program 1 times [2021-11-13 01:32:12,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:12,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129438394] [2021-11-13 01:32:12,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:12,111 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:12,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:12,112 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:12,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 01:32:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:16,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 1988 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 01:32:16,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:16,727 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-13 01:32:16,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:17,254 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-11-13 01:32:17,254 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:17,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129438394] [2021-11-13 01:32:17,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129438394] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:32:17,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:32:17,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-13 01:32:17,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198293365] [2021-11-13 01:32:17,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:17,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 01:32:17,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:17,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 01:32:17,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:32:17,256 INFO L87 Difference]: Start difference. First operand 178 states and 234 transitions. Second operand has 9 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-13 01:32:17,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:17,783 INFO L93 Difference]: Finished difference Result 325 states and 432 transitions. [2021-11-13 01:32:17,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 01:32:17,785 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 139 [2021-11-13 01:32:17,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:17,787 INFO L225 Difference]: With dead ends: 325 [2021-11-13 01:32:17,787 INFO L226 Difference]: Without dead ends: 187 [2021-11-13 01:32:17,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 268 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 01:32:17,789 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 12 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 365.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.60ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 416.32ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:17,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1499 Invalid, 152 Unknown, 0 Unchecked, 4.60ms Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 416.32ms Time] [2021-11-13 01:32:17,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-13 01:32:17,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 178. [2021-11-13 01:32:17,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 121 states have (on average 1.1900826446280992) internal successors, (144), 124 states have internal predecessors, (144), 42 states have call successors, (42), 12 states have call predecessors, (42), 14 states have return successors, (48), 41 states have call predecessors, (48), 41 states have call successors, (48) [2021-11-13 01:32:17,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 234 transitions. [2021-11-13 01:32:17,804 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 234 transitions. Word has length 139 [2021-11-13 01:32:17,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:17,805 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 234 transitions. [2021-11-13 01:32:17,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-13 01:32:17,805 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 234 transitions. [2021-11-13 01:32:17,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-13 01:32:17,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:17,808 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:32:17,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:18,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:18,022 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:18,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:18,022 INFO L85 PathProgramCache]: Analyzing trace with hash -287596543, now seen corresponding path program 1 times [2021-11-13 01:32:18,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:18,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079999844] [2021-11-13 01:32:18,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:18,027 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:18,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:18,029 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:18,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 01:32:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:22,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 1992 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:32:22,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:23,448 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-13 01:32:23,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:24,117 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-11-13 01:32:24,117 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:24,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079999844] [2021-11-13 01:32:24,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079999844] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:32:24,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:32:24,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2021-11-13 01:32:24,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365922956] [2021-11-13 01:32:24,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:24,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:32:24,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:24,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:32:24,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:32:24,119 INFO L87 Difference]: Start difference. First operand 178 states and 234 transitions. Second operand has 6 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-13 01:32:24,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:24,548 INFO L93 Difference]: Finished difference Result 302 states and 398 transitions. [2021-11-13 01:32:24,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:32:24,549 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 141 [2021-11-13 01:32:24,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:24,551 INFO L225 Difference]: With dead ends: 302 [2021-11-13 01:32:24,551 INFO L226 Difference]: Without dead ends: 175 [2021-11-13 01:32:24,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:32:24,553 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 78 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 313.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.38ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 381.51ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:24,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 835 Invalid, 94 Unknown, 0 Unchecked, 3.38ms Time], IncrementalHoareTripleChecker [47 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 381.51ms Time] [2021-11-13 01:32:24,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-13 01:32:24,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2021-11-13 01:32:24,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 119 states have (on average 1.184873949579832) internal successors, (141), 121 states have internal predecessors, (141), 42 states have call successors, (42), 12 states have call predecessors, (42), 13 states have return successors, (46), 41 states have call predecessors, (46), 41 states have call successors, (46) [2021-11-13 01:32:24,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 229 transitions. [2021-11-13 01:32:24,568 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 229 transitions. Word has length 141 [2021-11-13 01:32:24,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:24,569 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 229 transitions. [2021-11-13 01:32:24,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-13 01:32:24,570 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 229 transitions. [2021-11-13 01:32:24,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-13 01:32:24,572 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:24,573 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:32:24,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:24,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:24,774 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:24,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:24,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1441313717, now seen corresponding path program 1 times [2021-11-13 01:32:24,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:24,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825080572] [2021-11-13 01:32:24,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:24,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:24,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:24,780 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:24,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 01:32:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:29,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 2000 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:32:29,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:30,104 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-13 01:32:30,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:30,894 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-11-13 01:32:30,894 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:30,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825080572] [2021-11-13 01:32:30,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825080572] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:30,894 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:32:30,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-13 01:32:30,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724993107] [2021-11-13 01:32:30,895 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:30,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:32:30,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:30,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:32:30,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:32:30,897 INFO L87 Difference]: Start difference. First operand 175 states and 229 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-13 01:32:31,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:31,319 INFO L93 Difference]: Finished difference Result 293 states and 382 transitions. [2021-11-13 01:32:31,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:32:31,320 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 145 [2021-11-13 01:32:31,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:31,322 INFO L225 Difference]: With dead ends: 293 [2021-11-13 01:32:31,323 INFO L226 Difference]: Without dead ends: 172 [2021-11-13 01:32:31,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:32:31,325 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 83 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 328.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.17ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 376.49ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:31,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 832 Invalid, 90 Unknown, 0 Unchecked, 3.17ms Time], IncrementalHoareTripleChecker [45 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 376.49ms Time] [2021-11-13 01:32:31,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-13 01:32:31,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-11-13 01:32:31,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 117 states have (on average 1.1794871794871795) internal successors, (138), 118 states have internal predecessors, (138), 42 states have call successors, (42), 12 states have call predecessors, (42), 12 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2021-11-13 01:32:31,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 224 transitions. [2021-11-13 01:32:31,339 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 224 transitions. Word has length 145 [2021-11-13 01:32:31,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:31,340 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 224 transitions. [2021-11-13 01:32:31,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-13 01:32:31,340 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 224 transitions. [2021-11-13 01:32:31,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-13 01:32:31,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:31,343 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:32:31,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-13 01:32:31,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:31,567 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:31,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:31,567 INFO L85 PathProgramCache]: Analyzing trace with hash 217050614, now seen corresponding path program 1 times [2021-11-13 01:32:31,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:31,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081084953] [2021-11-13 01:32:31,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:31,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:31,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:31,572 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:31,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 01:32:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:36,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 2013 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-13 01:32:36,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:40,566 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 128 proven. 8 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-13 01:32:40,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:57,544 WARN L227 SmtUtils]: Spent 12.10s 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 01:32:57,548 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-13 01:32:57,549 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 01:41:29,909 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-11-13 01:41:29,910 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:29,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081084953] [2021-11-13 01:41:29,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081084953] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:41:29,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1612083144] [2021-11-13 01:41:29,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:29,911 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:41:29,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:41:29,922 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:41:29,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-13 01:41:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:34,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 2013 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-13 01:41:34,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:35,194 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 01:41:41,099 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-13 01:41:41,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:44,563 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 01:41:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-11-13 01:41:45,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1612083144] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:45,377 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:41:45,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 12] imperfect sequences [13, 11] total 41 [2021-11-13 01:41:45,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450749688] [2021-11-13 01:41:45,378 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:45,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-13 01:41:45,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:41:45,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-13 01:41:45,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1501, Unknown=0, NotChecked=0, Total=1640 [2021-11-13 01:41:45,380 INFO L87 Difference]: Start difference. First operand 172 states and 224 transitions. Second operand has 24 states, 23 states have (on average 5.913043478260869) internal successors, (136), 22 states have internal predecessors, (136), 10 states have call successors, (40), 5 states have call predecessors, (40), 8 states have return successors, (39), 11 states have call predecessors, (39), 10 states have call successors, (39) [2021-11-13 01:41:47,600 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:41:49,615 WARN L515 Checker$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 01:41:51,628 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 01:41:58,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:58,144 INFO L93 Difference]: Finished difference Result 459 states and 635 transitions. [2021-11-13 01:41:58,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-13 01:41:58,147 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.913043478260869) internal successors, (136), 22 states have internal predecessors, (136), 10 states have call successors, (40), 5 states have call predecessors, (40), 8 states have return successors, (39), 11 states have call predecessors, (39), 10 states have call successors, (39) Word has length 151 [2021-11-13 01:41:58,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:58,151 INFO L225 Difference]: With dead ends: 459 [2021-11-13 01:41:58,151 INFO L226 Difference]: Without dead ends: 340 [2021-11-13 01:41:58,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 546 SyntacticMatches, 16 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=166, Invalid=1814, Unknown=0, NotChecked=0, Total=1980 [2021-11-13 01:41:58,154 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 145 mSDsluCounter, 3565 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 64 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11023.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 3887 SdHoareTripleChecker+Invalid, 1483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.30ms SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 507 IncrementalHoareTripleChecker+Unchecked, 11672.69ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:58,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 3887 Invalid, 1483 Unknown, 0 Unchecked, 21.30ms Time], IncrementalHoareTripleChecker [64 Valid, 909 Invalid, 3 Unknown, 507 Unchecked, 11672.69ms Time] [2021-11-13 01:41:58,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-13 01:41:58,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 269. [2021-11-13 01:41:58,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 184 states have (on average 1.1793478260869565) internal successors, (217), 188 states have internal predecessors, (217), 66 states have call successors, (66), 15 states have call predecessors, (66), 18 states have return successors, (82), 65 states have call predecessors, (82), 65 states have call successors, (82) [2021-11-13 01:41:58,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 365 transitions. [2021-11-13 01:41:58,185 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 365 transitions. Word has length 151 [2021-11-13 01:41:58,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:58,185 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 365 transitions. [2021-11-13 01:41:58,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.913043478260869) internal successors, (136), 22 states have internal predecessors, (136), 10 states have call successors, (40), 5 states have call predecessors, (40), 8 states have return successors, (39), 11 states have call predecessors, (39), 10 states have call successors, (39) [2021-11-13 01:41:58,186 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 365 transitions. [2021-11-13 01:41:58,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-13 01:41:58,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:58,189 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:41:58,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:58,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:58,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:41:58,603 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:41:58,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:58,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1942244417, now seen corresponding path program 1 times [2021-11-13 01:41:58,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:58,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270833266] [2021-11-13 01:41:58,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:58,607 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:58,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:58,609 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:58,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0952ccda-14b4-4b9b-ba39-1da071a3adf5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 01:42:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:03,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 2029 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 01:42:03,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:04,601 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:42:04,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 99 treesize of output 35 [2021-11-13 01:42:05,155 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 137 proven. 8 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-13 01:42:05,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:06,817 INFO L354 Elim1Store]: treesize reduction 322, result has 0.3 percent of original size [2021-11-13 01:42:06,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 129 treesize of output 1 [2021-11-13 01:42:17,691 WARN L227 SmtUtils]: Spent 10.39s on a formula simplification. DAG size of input: 523 DAG size of output: 269 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-13 01:42:17,694 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-13 01:42:17,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 128 treesize of output 771