./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2d2088ac57520281350e2a5a3a1c8295b6f3f6b1edc40c64fce86e2816b5a5aa --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:49:36,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:49:36,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:49:36,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:49:36,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:49:36,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:49:36,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:49:36,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:49:36,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:49:36,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:49:36,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:49:36,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:49:36,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:49:36,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:49:36,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:49:36,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:49:36,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:49:36,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:49:36,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:49:36,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:49:36,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:49:36,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:49:36,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:49:36,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:49:36,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:49:36,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:49:36,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:49:36,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:49:36,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:49:36,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:49:36,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:49:36,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:49:36,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:49:36,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:49:36,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:49:36,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:49:36,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:49:36,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:49:36,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:49:36,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:49:36,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:49:36,278 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:49:36,340 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:49:36,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:49:36,341 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:49:36,341 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:49:36,342 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:49:36,342 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:49:36,342 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:49:36,342 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:49:36,342 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:49:36,342 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:49:36,343 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:49:36,343 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:49:36,343 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:49:36,343 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:49:36,343 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:49:36,344 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:49:36,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:49:36,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:49:36,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:49:36,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:49:36,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:49:36,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:49:36,346 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:49:36,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:49:36,346 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:49:36,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:49:36,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:49:36,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:49:36,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:49:36,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:49:36,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:49:36,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:49:36,348 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:49:36,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:49:36,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:49:36,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:49:36,348 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:49:36,348 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_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d2088ac57520281350e2a5a3a1c8295b6f3f6b1edc40c64fce86e2816b5a5aa [2021-11-19 14:49:36,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:49:36,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:49:36,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:49:36,725 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:49:36,726 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:49:36,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i [2021-11-19 14:49:36,792 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/data/d058792f2/54816194f4664947852c401bbf1541d2/FLAGedaef92f6 [2021-11-19 14:49:37,743 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:49:37,745 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i [2021-11-19 14:49:37,798 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/data/d058792f2/54816194f4664947852c401bbf1541d2/FLAGedaef92f6 [2021-11-19 14:49:38,186 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/data/d058792f2/54816194f4664947852c401bbf1541d2 [2021-11-19 14:49:38,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:49:38,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:49:38,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:49:38,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:49:38,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:49:38,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:49:38" (1/1) ... [2021-11-19 14:49:38,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25026411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:38, skipping insertion in model container [2021-11-19 14:49:38,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:49:38" (1/1) ... [2021-11-19 14:49:38,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:49:38,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:49:38,614 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4497,4510] [2021-11-19 14:49:38,621 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4557,4570] [2021-11-19 14:49:38,649 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:49:38,655 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:49:39,680 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:39,681 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:39,682 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:39,683 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:39,684 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:39,703 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:39,704 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:39,707 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:39,708 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:40,235 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:49:40,237 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:49:40,238 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:49:40,240 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:49:40,242 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:49:40,243 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:49:40,244 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:49:40,245 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:49:40,246 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:49:40,247 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:49:40,499 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:49:40,633 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:40,633 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:40,712 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:49:40,798 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:49:40,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5c602ed4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:40, skipping insertion in model container [2021-11-19 14:49:40,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:49:40,801 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:49:40,804 INFO L158 Benchmark]: Toolchain (without parser) took 2611.81ms. Allocated memory was 88.1MB in the beginning and 113.2MB in the end (delta: 25.2MB). Free memory was 57.4MB in the beginning and 60.1MB in the end (delta: -2.7MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. [2021-11-19 14:49:40,805 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 88.1MB. Free memory is still 64.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:49:40,806 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2609.29ms. Allocated memory was 88.1MB in the beginning and 113.2MB in the end (delta: 25.2MB). Free memory was 57.2MB in the beginning and 60.1MB in the end (delta: -2.9MB). Peak memory consumption was 33.8MB. Max. memory is 16.1GB. [2021-11-19 14:49:40,808 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 88.1MB. Free memory is still 64.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2609.29ms. Allocated memory was 88.1MB in the beginning and 113.2MB in the end (delta: 25.2MB). Free memory was 57.2MB in the beginning and 60.1MB in the end (delta: -2.9MB). Peak memory consumption was 33.8MB. 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_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2d2088ac57520281350e2a5a3a1c8295b6f3f6b1edc40c64fce86e2816b5a5aa --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:49:43,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:49:43,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:49:43,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:49:43,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:49:43,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:49:43,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:49:43,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:49:43,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:49:43,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:49:43,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:49:43,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:49:43,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:49:43,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:49:43,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:49:43,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:49:43,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:49:43,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:49:43,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:49:43,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:49:43,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:49:43,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:49:43,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:49:43,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:49:43,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:49:43,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:49:43,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:49:43,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:49:43,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:49:43,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:49:43,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:49:43,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:49:43,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:49:43,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:49:43,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:49:43,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:49:43,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:49:43,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:49:43,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:49:43,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:49:43,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:49:43,120 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:49:43,145 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:49:43,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:49:43,146 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:49:43,146 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:49:43,147 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:49:43,147 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:49:43,147 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:49:43,147 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:49:43,148 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:49:43,148 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:49:43,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:49:43,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:49:43,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:49:43,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:49:43,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:49:43,150 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:49:43,150 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:49:43,150 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:49:43,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:49:43,151 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:49:43,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:49:43,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:49:43,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:49:43,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:49:43,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:49:43,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:49:43,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:49:43,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:49:43,153 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:49:43,153 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:49:43,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:49:43,153 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:49:43,154 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:49:43,154 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_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d2088ac57520281350e2a5a3a1c8295b6f3f6b1edc40c64fce86e2816b5a5aa [2021-11-19 14:49:43,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:49:43,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:49:43,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:49:43,579 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:49:43,582 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:49:43,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i [2021-11-19 14:49:43,664 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/data/b78a1717c/0b53b8737e2b427498d5bd445085360e/FLAGd2fc4c230 [2021-11-19 14:49:44,706 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:49:44,707 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i [2021-11-19 14:49:44,749 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/data/b78a1717c/0b53b8737e2b427498d5bd445085360e/FLAGd2fc4c230 [2021-11-19 14:49:45,146 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/data/b78a1717c/0b53b8737e2b427498d5bd445085360e [2021-11-19 14:49:45,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:49:45,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:49:45,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:49:45,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:49:45,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:49:45,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:49:45" (1/1) ... [2021-11-19 14:49:45,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27573307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:45, skipping insertion in model container [2021-11-19 14:49:45,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:49:45" (1/1) ... [2021-11-19 14:49:45,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:49:45,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:49:45,610 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4497,4510] [2021-11-19 14:49:45,617 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4557,4570] [2021-11-19 14:49:45,643 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:49:45,654 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:49:46,586 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:46,587 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:46,588 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:46,589 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:46,590 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:46,609 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:46,610 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:46,612 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:46,613 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:47,105 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:49:47,106 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:49:47,108 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:49:47,112 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:49:47,114 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:49:47,115 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:49:47,116 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:49:47,117 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:49:47,117 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:49:47,118 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:49:47,348 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:49:47,455 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:47,456 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:47,568 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:49:47,653 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:49:47,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:49:47,726 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4497,4510] [2021-11-19 14:49:47,727 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4557,4570] [2021-11-19 14:49:47,729 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:49:47,732 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:49:47,785 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:47,786 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:47,786 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:47,787 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:47,787 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:47,811 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:47,815 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:47,816 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:47,817 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:47,881 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:49:47,882 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:49:47,883 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:49:47,884 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:49:47,888 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:49:47,889 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:49:47,893 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:49:47,894 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:49:47,894 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:49:47,895 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:49:47,940 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:49:48,030 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:48,030 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:48,074 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:49:48,155 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:49:48,181 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4497,4510] [2021-11-19 14:49:48,181 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4557,4570] [2021-11-19 14:49:48,183 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:49:48,184 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:49:48,233 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:48,234 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:48,234 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:48,235 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:48,236 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:48,242 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:48,243 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:48,244 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:48,245 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:48,282 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:49:48,283 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:49:48,284 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:49:48,285 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:49:48,286 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:49:48,287 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:49:48,288 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:49:48,288 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:49:48,289 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:49:48,290 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:49:48,346 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:49:48,418 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:48,419 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:49:48,456 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:49:48,864 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:49:48,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:48 WrapperNode [2021-11-19 14:49:48,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:49:48,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:49:48,867 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:49:48,867 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:49:48,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:48" (1/1) ... [2021-11-19 14:49:49,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:48" (1/1) ... [2021-11-19 14:49:49,152 INFO L137 Inliner]: procedures = 713, calls = 2621, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 858 [2021-11-19 14:49:49,153 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:49:49,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:49:49,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:49:49,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:49:49,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:48" (1/1) ... [2021-11-19 14:49:49,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:48" (1/1) ... [2021-11-19 14:49:49,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:48" (1/1) ... [2021-11-19 14:49:49,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:48" (1/1) ... [2021-11-19 14:49:49,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:48" (1/1) ... [2021-11-19 14:49:49,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:48" (1/1) ... [2021-11-19 14:49:49,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:48" (1/1) ... [2021-11-19 14:49:49,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:49:49,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:49:49,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:49:49,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:49:49,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:48" (1/1) ... [2021-11-19 14:49:49,322 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:49:49,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:49:49,351 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:49:49,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:49:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2021-11-19 14:49:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-19 14:49:49,410 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-19 14:49:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hton32 [2021-11-19 14:49:49,410 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hton32 [2021-11-19 14:49:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:49:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 14:49:49,412 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 14:49:49,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:49:49,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:49:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:49:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:49:49,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:49:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:49:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:49:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:49:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-19 14:49:49,414 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-19 14:49:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:49:49,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:49:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 14:49:49,414 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 14:49:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:49:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-19 14:49:49,415 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-19 14:49:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:49:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:49:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:49:49,415 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:49:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-19 14:49:49,416 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-19 14:49:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:49:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:49:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2021-11-19 14:49:49,417 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2021-11-19 14:49:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:49:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:49:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:49:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:49:49,422 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 14:49:49,422 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 14:49:49,776 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:49:49,781 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:49:54,034 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:49:54,042 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:49:54,042 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 14:49:54,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:49:54 BoogieIcfgContainer [2021-11-19 14:49:54,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:49:54,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:49:54,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:49:54,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:49:54,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:49:45" (1/3) ... [2021-11-19 14:49:54,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7120c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:49:54, skipping insertion in model container [2021-11-19 14:49:54,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:48" (2/3) ... [2021-11-19 14:49:54,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7120c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:49:54, skipping insertion in model container [2021-11-19 14:49:54,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:49:54" (3/3) ... [2021-11-19 14:49:54,053 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be32_harness.i [2021-11-19 14:49:54,058 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:49:54,058 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:49:54,107 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:49:54,113 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:49:54,114 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:49:54,133 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 89 states have internal predecessors, (108), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-19 14:49:54,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-19 14:49:54,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:49:54,145 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:49:54,146 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:49:54,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:49:54,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2088523989, now seen corresponding path program 1 times [2021-11-19 14:49:54,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:49:54,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232380062] [2021-11-19 14:49:54,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:49:54,171 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:49:54,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:49:54,174 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:49:54,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:49:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:49:55,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:49:55,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:49:55,483 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-19 14:49:55,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:49:55,751 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-19 14:49:55,752 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:49:55,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232380062] [2021-11-19 14:49:55,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232380062] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:49:55,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:49:55,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-19 14:49:55,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536617142] [2021-11-19 14:49:55,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:49:55,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:49:55,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:49:55,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:49:55,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:49:55,815 INFO L87 Difference]: Start difference. First operand has 136 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 89 states have internal predecessors, (108), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 14:49:55,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:49:55,859 INFO L93 Difference]: Finished difference Result 268 states and 377 transitions. [2021-11-19 14:49:55,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:49:55,861 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 90 [2021-11-19 14:49:55,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:49:55,873 INFO L225 Difference]: With dead ends: 268 [2021-11-19 14:49:55,873 INFO L226 Difference]: Without dead ends: 131 [2021-11-19 14:49:55,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:49:55,883 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:49:55,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:49:55,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-19 14:49:55,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-11-19 14:49:55,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 84 states have (on average 1.2023809523809523) internal successors, (101), 85 states have internal predecessors, (101), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-19 14:49:55,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 170 transitions. [2021-11-19 14:49:55,945 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 170 transitions. Word has length 90 [2021-11-19 14:49:55,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:49:55,945 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 170 transitions. [2021-11-19 14:49:55,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 14:49:55,946 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 170 transitions. [2021-11-19 14:49:55,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-19 14:49:55,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:49:55,952 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:49:55,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 14:49:56,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:49:56,166 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:49:56,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:49:56,167 INFO L85 PathProgramCache]: Analyzing trace with hash -171173329, now seen corresponding path program 1 times [2021-11-19 14:49:56,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:49:56,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461863770] [2021-11-19 14:49:56,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:49:56,172 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:49:56,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:49:56,173 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:49:56,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:49:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:49:57,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:49:57,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:49:57,493 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-19 14:49:57,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:49:57,874 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-19 14:49:57,874 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:49:57,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461863770] [2021-11-19 14:49:57,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461863770] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:49:57,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:49:57,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 14:49:57,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605926266] [2021-11-19 14:49:57,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:49:57,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:49:57,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:49:57,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:49:57,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:49:57,878 INFO L87 Difference]: Start difference. First operand 131 states and 170 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 14:49:58,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:49:58,190 INFO L93 Difference]: Finished difference Result 240 states and 319 transitions. [2021-11-19 14:49:58,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:49:58,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 90 [2021-11-19 14:49:58,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:49:58,196 INFO L225 Difference]: With dead ends: 240 [2021-11-19 14:49:58,197 INFO L226 Difference]: Without dead ends: 134 [2021-11-19 14:49:58,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:49:58,199 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 48 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:49:58,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 549 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:49:58,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-19 14:49:58,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-11-19 14:49:58,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 86 states have (on average 1.197674418604651) internal successors, (103), 88 states have internal predecessors, (103), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (38), 34 states have call predecessors, (38), 34 states have call successors, (38) [2021-11-19 14:49:58,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 176 transitions. [2021-11-19 14:49:58,220 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 176 transitions. Word has length 90 [2021-11-19 14:49:58,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:49:58,220 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 176 transitions. [2021-11-19 14:49:58,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 14:49:58,221 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 176 transitions. [2021-11-19 14:49:58,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 14:49:58,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:49:58,224 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:49:58,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:49:58,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:49:58,446 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:49:58,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:49:58,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1214142116, now seen corresponding path program 1 times [2021-11-19 14:49:58,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:49:58,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [487359180] [2021-11-19 14:49:58,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:49:58,451 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:49:58,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:49:58,452 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:49:58,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:49:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:49:59,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:49:59,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:49:59,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-19 14:50:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-19 14:50:00,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:50:01,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-19 14:50:01,954 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-19 14:50:01,954 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:50:01,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [487359180] [2021-11-19 14:50:01,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [487359180] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:50:01,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:50:01,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 19 [2021-11-19 14:50:01,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348092471] [2021-11-19 14:50:01,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:01,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:50:01,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:50:01,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:50:01,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:50:01,957 INFO L87 Difference]: Start difference. First operand 134 states and 176 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 10 states have internal predecessors, (48), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-19 14:50:02,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:02,263 INFO L93 Difference]: Finished difference Result 263 states and 347 transitions. [2021-11-19 14:50:02,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:50:02,264 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 10 states have internal predecessors, (48), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 96 [2021-11-19 14:50:02,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:02,267 INFO L225 Difference]: With dead ends: 263 [2021-11-19 14:50:02,267 INFO L226 Difference]: Without dead ends: 147 [2021-11-19 14:50:02,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:50:02,270 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 37 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:02,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 654 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 35 Unchecked, 0.2s Time] [2021-11-19 14:50:02,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-19 14:50:02,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-11-19 14:50:02,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 98 states have (on average 1.2040816326530612) internal successors, (118), 100 states have internal predecessors, (118), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (39), 34 states have call predecessors, (39), 34 states have call successors, (39) [2021-11-19 14:50:02,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 192 transitions. [2021-11-19 14:50:02,299 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 192 transitions. Word has length 96 [2021-11-19 14:50:02,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:02,300 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 192 transitions. [2021-11-19 14:50:02,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 10 states have internal predecessors, (48), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-19 14:50:02,301 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 192 transitions. [2021-11-19 14:50:02,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 14:50:02,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:02,315 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:50:02,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:50:02,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:50:02,516 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:50:02,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:02,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1159749218, now seen corresponding path program 1 times [2021-11-19 14:50:02,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:50:02,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310149780] [2021-11-19 14:50:02,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:02,518 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:50:02,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:50:02,524 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:50:02,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:50:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:03,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:50:03,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:50:03,792 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-19 14:50:03,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:50:04,042 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-19 14:50:04,042 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:50:04,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310149780] [2021-11-19 14:50:04,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310149780] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:50:04,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:50:04,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-19 14:50:04,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971326112] [2021-11-19 14:50:04,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:04,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:50:04,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:50:04,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:50:04,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:50:04,045 INFO L87 Difference]: Start difference. First operand 147 states and 192 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 14:50:04,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:04,109 INFO L93 Difference]: Finished difference Result 266 states and 359 transitions. [2021-11-19 14:50:04,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:50:04,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 96 [2021-11-19 14:50:04,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:04,116 INFO L225 Difference]: With dead ends: 266 [2021-11-19 14:50:04,116 INFO L226 Difference]: Without dead ends: 153 [2021-11-19 14:50:04,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:50:04,121 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 20 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:04,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 502 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:50:04,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-19 14:50:04,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 141. [2021-11-19 14:50:04,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 93 states have (on average 1.2043010752688172) internal successors, (112), 94 states have internal predecessors, (112), 35 states have call successors, (35), 12 states have call predecessors, (35), 12 states have return successors, (38), 34 states have call predecessors, (38), 34 states have call successors, (38) [2021-11-19 14:50:04,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 185 transitions. [2021-11-19 14:50:04,156 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 185 transitions. Word has length 96 [2021-11-19 14:50:04,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:04,157 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 185 transitions. [2021-11-19 14:50:04,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 14:50:04,157 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 185 transitions. [2021-11-19 14:50:04,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-19 14:50:04,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:04,161 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:50:04,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:50:04,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:50:04,378 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:50:04,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:04,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1516857828, now seen corresponding path program 1 times [2021-11-19 14:50:04,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:50:04,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770422693] [2021-11-19 14:50:04,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:04,381 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:50:04,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:50:04,383 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:50:04,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:50:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:05,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:50:05,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:50:06,275 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-19 14:50:06,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:50:06,852 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-19 14:50:06,853 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:50:06,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770422693] [2021-11-19 14:50:06,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770422693] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:50:06,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:50:06,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-19 14:50:06,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174530258] [2021-11-19 14:50:06,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:06,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:50:06,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:50:06,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:50:06,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:50:06,856 INFO L87 Difference]: Start difference. First operand 141 states and 185 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 14:50:08,987 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:50:10,996 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:50:12,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:12,356 INFO L93 Difference]: Finished difference Result 272 states and 372 transitions. [2021-11-19 14:50:12,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:50:12,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 100 [2021-11-19 14:50:12,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:12,363 INFO L225 Difference]: With dead ends: 272 [2021-11-19 14:50:12,363 INFO L226 Difference]: Without dead ends: 161 [2021-11-19 14:50:12,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:50:12,365 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 42 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:12,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 587 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 2 Unknown, 43 Unchecked, 5.3s Time] [2021-11-19 14:50:12,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-11-19 14:50:12,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 150. [2021-11-19 14:50:12,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 102 states have (on average 1.2156862745098038) internal successors, (124), 103 states have internal predecessors, (124), 35 states have call successors, (35), 12 states have call predecessors, (35), 12 states have return successors, (38), 34 states have call predecessors, (38), 34 states have call successors, (38) [2021-11-19 14:50:12,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 197 transitions. [2021-11-19 14:50:12,383 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 197 transitions. Word has length 100 [2021-11-19 14:50:12,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:12,384 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 197 transitions. [2021-11-19 14:50:12,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 14:50:12,385 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 197 transitions. [2021-11-19 14:50:12,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-19 14:50:12,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:12,387 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:50:12,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:50:12,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:50:12,599 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:50:12,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:12,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1091929630, now seen corresponding path program 1 times [2021-11-19 14:50:12,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:50:12,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546025992] [2021-11-19 14:50:12,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:12,601 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:50:12,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:50:12,602 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:50:12,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:50:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:13,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 14:50:13,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:50:15,440 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-19 14:50:15,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:50:17,553 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-19 14:50:17,553 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:50:17,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546025992] [2021-11-19 14:50:17,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546025992] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:50:17,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:50:17,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 19 [2021-11-19 14:50:17,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618776444] [2021-11-19 14:50:17,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:17,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:50:17,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:50:17,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:50:17,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:50:17,556 INFO L87 Difference]: Start difference. First operand 150 states and 197 transitions. Second operand has 12 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 14:50:19,657 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:50:21,668 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:50:25,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:25,123 INFO L93 Difference]: Finished difference Result 280 states and 385 transitions. [2021-11-19 14:50:25,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:50:25,127 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 100 [2021-11-19 14:50:25,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:25,129 INFO L225 Difference]: With dead ends: 280 [2021-11-19 14:50:25,129 INFO L226 Difference]: Without dead ends: 159 [2021-11-19 14:50:25,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-19 14:50:25,131 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 38 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 313 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:25,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 1517 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 234 Invalid, 2 Unknown, 313 Unchecked, 6.0s Time] [2021-11-19 14:50:25,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-19 14:50:25,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2021-11-19 14:50:25,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 106 states have (on average 1.1886792452830188) internal successors, (126), 108 states have internal predecessors, (126), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (43), 34 states have call predecessors, (43), 34 states have call successors, (43) [2021-11-19 14:50:25,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 204 transitions. [2021-11-19 14:50:25,147 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 204 transitions. Word has length 100 [2021-11-19 14:50:25,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:25,148 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 204 transitions. [2021-11-19 14:50:25,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 14:50:25,149 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 204 transitions. [2021-11-19 14:50:25,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-19 14:50:25,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:25,151 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:50:25,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:50:25,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:50:25,366 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:50:25,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:25,367 INFO L85 PathProgramCache]: Analyzing trace with hash 391599962, now seen corresponding path program 1 times [2021-11-19 14:50:25,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:50:25,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483102900] [2021-11-19 14:50:25,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:25,368 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:50:25,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:50:25,369 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:50:25,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:50:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:26,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:50:26,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:50:26,676 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-19 14:50:26,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:50:26,924 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-19 14:50:26,924 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:50:26,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483102900] [2021-11-19 14:50:26,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483102900] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:50:26,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:50:26,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-19 14:50:26,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117068017] [2021-11-19 14:50:26,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:26,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:50:26,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:50:26,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:50:26,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:50:26,926 INFO L87 Difference]: Start difference. First operand 155 states and 204 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 14:50:26,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:26,987 INFO L93 Difference]: Finished difference Result 284 states and 383 transitions. [2021-11-19 14:50:26,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:50:26,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 100 [2021-11-19 14:50:26,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:26,992 INFO L225 Difference]: With dead ends: 284 [2021-11-19 14:50:26,993 INFO L226 Difference]: Without dead ends: 159 [2021-11-19 14:50:26,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:50:26,998 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 34 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:27,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 493 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:50:27,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-19 14:50:27,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 151. [2021-11-19 14:50:27,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 104 states have internal predecessors, (119), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (43), 34 states have call predecessors, (43), 34 states have call successors, (43) [2021-11-19 14:50:27,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 197 transitions. [2021-11-19 14:50:27,023 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 197 transitions. Word has length 100 [2021-11-19 14:50:27,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:27,023 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 197 transitions. [2021-11-19 14:50:27,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 14:50:27,024 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 197 transitions. [2021-11-19 14:50:27,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-19 14:50:27,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:27,026 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:50:27,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:50:27,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:50:27,241 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:50:27,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:27,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1345540120, now seen corresponding path program 1 times [2021-11-19 14:50:27,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:50:27,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606617206] [2021-11-19 14:50:27,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:27,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:50:27,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:50:27,244 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:50:27,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:50:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:28,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:50:28,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:50:28,471 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-19 14:50:28,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:50:28,859 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-19 14:50:28,860 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:50:28,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606617206] [2021-11-19 14:50:28,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1606617206] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:50:28,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:50:28,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-19 14:50:28,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603294219] [2021-11-19 14:50:28,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:28,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:50:28,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:50:28,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:50:28,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:50:28,861 INFO L87 Difference]: Start difference. First operand 151 states and 197 transitions. Second operand has 9 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 14:50:29,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:29,253 INFO L93 Difference]: Finished difference Result 283 states and 380 transitions. [2021-11-19 14:50:29,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:50:29,254 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 100 [2021-11-19 14:50:29,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:29,256 INFO L225 Difference]: With dead ends: 283 [2021-11-19 14:50:29,256 INFO L226 Difference]: Without dead ends: 160 [2021-11-19 14:50:29,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:50:29,258 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 12 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:29,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1213 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:50:29,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-19 14:50:29,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 151. [2021-11-19 14:50:29,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 104 states have internal predecessors, (119), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (43), 34 states have call predecessors, (43), 34 states have call successors, (43) [2021-11-19 14:50:29,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 197 transitions. [2021-11-19 14:50:29,271 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 197 transitions. Word has length 100 [2021-11-19 14:50:29,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:29,272 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 197 transitions. [2021-11-19 14:50:29,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 14:50:29,272 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 197 transitions. [2021-11-19 14:50:29,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-19 14:50:29,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:29,274 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:50:29,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:50:29,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:50:29,490 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:50:29,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:29,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1495029229, now seen corresponding path program 1 times [2021-11-19 14:50:29,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:50:29,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377991248] [2021-11-19 14:50:29,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:29,492 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:50:29,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:50:29,493 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:50:29,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:50:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:30,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 1515 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:50:30,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:50:30,734 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-19 14:50:30,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:50:31,075 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-19 14:50:31,075 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:50:31,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377991248] [2021-11-19 14:50:31,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377991248] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:50:31,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:50:31,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2021-11-19 14:50:31,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816418152] [2021-11-19 14:50:31,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:31,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:50:31,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:50:31,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:50:31,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:50:31,077 INFO L87 Difference]: Start difference. First operand 151 states and 197 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 14:50:31,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:31,351 INFO L93 Difference]: Finished difference Result 266 states and 348 transitions. [2021-11-19 14:50:31,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:50:31,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 102 [2021-11-19 14:50:31,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:31,354 INFO L225 Difference]: With dead ends: 266 [2021-11-19 14:50:31,354 INFO L226 Difference]: Without dead ends: 151 [2021-11-19 14:50:31,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:50:31,356 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 65 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:31,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 554 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:50:31,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-19 14:50:31,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2021-11-19 14:50:31,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 104 states have internal predecessors, (119), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (42), 34 states have call predecessors, (42), 34 states have call successors, (42) [2021-11-19 14:50:31,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 196 transitions. [2021-11-19 14:50:31,375 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 196 transitions. Word has length 102 [2021-11-19 14:50:31,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:31,376 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 196 transitions. [2021-11-19 14:50:31,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 14:50:31,376 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 196 transitions. [2021-11-19 14:50:31,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-19 14:50:31,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:31,381 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:50:31,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:50:31,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:50:31,594 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:50:31,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:31,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1804103816, now seen corresponding path program 1 times [2021-11-19 14:50:31,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:50:31,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351013894] [2021-11-19 14:50:31,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:31,598 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:50:31,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:50:31,599 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:50:31,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:50:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:32,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 1528 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:50:32,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:50:33,057 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-19 14:50:33,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:50:33,452 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 14:50:33,453 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:50:33,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351013894] [2021-11-19 14:50:33,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351013894] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:50:33,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:50:33,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 8 [2021-11-19 14:50:33,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256844547] [2021-11-19 14:50:33,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:33,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:50:33,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:50:33,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:50:33,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:50:33,455 INFO L87 Difference]: Start difference. First operand 151 states and 196 transitions. Second operand has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-19 14:50:34,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:34,108 INFO L93 Difference]: Finished difference Result 256 states and 333 transitions. [2021-11-19 14:50:34,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:50:34,109 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) Word has length 108 [2021-11-19 14:50:34,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:34,111 INFO L225 Difference]: With dead ends: 256 [2021-11-19 14:50:34,111 INFO L226 Difference]: Without dead ends: 148 [2021-11-19 14:50:34,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:50:34,113 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 84 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:34,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 960 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:50:34,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-19 14:50:34,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-11-19 14:50:34,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 100 states have (on average 1.16) internal successors, (116), 101 states have internal predecessors, (116), 35 states have call successors, (35), 12 states have call predecessors, (35), 12 states have return successors, (39), 34 states have call predecessors, (39), 34 states have call successors, (39) [2021-11-19 14:50:34,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 190 transitions. [2021-11-19 14:50:34,125 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 190 transitions. Word has length 108 [2021-11-19 14:50:34,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:34,125 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 190 transitions. [2021-11-19 14:50:34,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-19 14:50:34,126 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 190 transitions. [2021-11-19 14:50:34,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-19 14:50:34,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:34,128 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:50:34,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:50:34,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:50:34,342 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:50:34,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:34,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1669007394, now seen corresponding path program 1 times [2021-11-19 14:50:34,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:50:34,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966049900] [2021-11-19 14:50:34,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:34,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:50:34,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:50:34,345 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:50:34,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:50:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:35,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 1554 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-19 14:50:35,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:50:38,779 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 81 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-19 14:50:38,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:50:43,453 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:50:43,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-19 14:50:43,482 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-19 14:50:43,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-19 14:50:43,671 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 40 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-19 14:50:43,671 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:50:43,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966049900] [2021-11-19 14:50:43,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966049900] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:50:43,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1603733728] [2021-11-19 14:50:43,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:43,673 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:50:43,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:50:43,676 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:50:43,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-19 14:50:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:50,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 1554 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:50:50,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:50:50,748 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-19 14:50:50,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:50:51,124 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 14:50:51,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1603733728] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:50:51,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:50:51,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [20, 15, 10] total 37 [2021-11-19 14:50:51,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166553778] [2021-11-19 14:50:51,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:51,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:50:51,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:50:51,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:50:51,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1228, Unknown=0, NotChecked=0, Total=1332 [2021-11-19 14:50:51,128 INFO L87 Difference]: Start difference. First operand 148 states and 190 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-19 14:50:51,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:51,344 INFO L93 Difference]: Finished difference Result 160 states and 206 transitions. [2021-11-19 14:50:51,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:50:51,345 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 120 [2021-11-19 14:50:51,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:51,347 INFO L225 Difference]: With dead ends: 160 [2021-11-19 14:50:51,347 INFO L226 Difference]: Without dead ends: 158 [2021-11-19 14:50:51,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 437 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=114, Invalid=1368, Unknown=0, NotChecked=0, Total=1482 [2021-11-19 14:50:51,349 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 23 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:51,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 1134 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:50:51,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-19 14:50:51,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2021-11-19 14:50:51,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 106 states have (on average 1.150943396226415) internal successors, (122), 108 states have internal predecessors, (122), 36 states have call successors, (36), 13 states have call predecessors, (36), 14 states have return successors, (45), 35 states have call predecessors, (45), 35 states have call successors, (45) [2021-11-19 14:50:51,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 203 transitions. [2021-11-19 14:50:51,361 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 203 transitions. Word has length 120 [2021-11-19 14:50:51,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:51,361 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 203 transitions. [2021-11-19 14:50:51,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-19 14:50:51,362 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 203 transitions. [2021-11-19 14:50:51,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-19 14:50:51,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:51,364 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:50:51,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-19 14:50:51,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-19 14:50:51,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:50:51,778 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:50:51,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:51,778 INFO L85 PathProgramCache]: Analyzing trace with hash 638389796, now seen corresponding path program 1 times [2021-11-19 14:50:51,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:50:51,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321752618] [2021-11-19 14:50:51,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:51,780 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:50:51,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:50:51,781 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:50:51,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:50:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:52,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 1560 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 14:50:52,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:50:55,418 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 85 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-19 14:50:55,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:50:59,157 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:50:59,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-19 14:50:59,190 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-19 14:50:59,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-19 14:50:59,355 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-19 14:50:59,355 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:50:59,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321752618] [2021-11-19 14:50:59,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321752618] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:50:59,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1092639664] [2021-11-19 14:50:59,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:59,356 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:50:59,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:50:59,361 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:50:59,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-19 14:51:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:05,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 1560 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-19 14:51:05,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:07,049 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 85 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-19 14:51:07,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:09,874 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-19 14:51:09,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 35 [2021-11-19 14:51:09,882 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-11-19 14:51:09,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-11-19 14:51:10,046 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-19 14:51:10,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1092639664] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:51:10,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58531791] [2021-11-19 14:51:10,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:10,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:51:10,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:51:10,047 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:51:10,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-19 14:51:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:11,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 1560 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 14:51:11,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:12,776 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 85 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-19 14:51:12,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:15,736 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:51:15,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-19 14:51:15,758 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-19 14:51:15,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-19 14:51:15,921 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-19 14:51:15,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58531791] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:51:15,921 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:51:15,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 16, 11, 16, 11] total 23 [2021-11-19 14:51:15,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707145048] [2021-11-19 14:51:15,922 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:51:15,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-19 14:51:15,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:15,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-19 14:51:15,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:51:15,925 INFO L87 Difference]: Start difference. First operand 157 states and 203 transitions. Second operand has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 7 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (25), 6 states have call predecessors, (25), 6 states have call successors, (25) [2021-11-19 14:51:18,035 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:51:20,047 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:51:22,053 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:51:24,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:51:26,069 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:51:28,076 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:51:30,086 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:51:32,094 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:51:37,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:37,669 INFO L93 Difference]: Finished difference Result 289 states and 376 transitions. [2021-11-19 14:51:37,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-19 14:51:37,670 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 7 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (25), 6 states have call predecessors, (25), 6 states have call successors, (25) Word has length 124 [2021-11-19 14:51:37,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:37,672 INFO L225 Difference]: With dead ends: 289 [2021-11-19 14:51:37,672 INFO L226 Difference]: Without dead ends: 206 [2021-11-19 14:51:37,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 710 SyntacticMatches, 14 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=288, Invalid=1434, Unknown=0, NotChecked=0, Total=1722 [2021-11-19 14:51:37,675 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 192 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 75 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 179 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:37,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 2190 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 684 Invalid, 8 Unknown, 179 Unchecked, 19.5s Time] [2021-11-19 14:51:37,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-19 14:51:37,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 183. [2021-11-19 14:51:37,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 127 states have (on average 1.1574803149606299) internal successors, (147), 129 states have internal predecessors, (147), 39 states have call successors, (39), 15 states have call predecessors, (39), 16 states have return successors, (55), 38 states have call predecessors, (55), 38 states have call successors, (55) [2021-11-19 14:51:37,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 241 transitions. [2021-11-19 14:51:37,692 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 241 transitions. Word has length 124 [2021-11-19 14:51:37,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:37,692 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 241 transitions. [2021-11-19 14:51:37,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 7 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (25), 6 states have call predecessors, (25), 6 states have call successors, (25) [2021-11-19 14:51:37,693 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 241 transitions. [2021-11-19 14:51:37,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-19 14:51:37,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:37,696 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-11-19 14:51:37,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:37,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-11-19 14:51:38,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-19 14:51:38,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:38,313 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:51:38,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:38,314 INFO L85 PathProgramCache]: Analyzing trace with hash -641473882, now seen corresponding path program 2 times [2021-11-19 14:51:38,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:38,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152657747] [2021-11-19 14:51:38,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:51:38,316 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:38,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:38,317 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:38,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8f7716-c6ed-401d-a011-2085eacd6a70/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 14:51:45,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:51:45,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:51:45,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 14:51:45,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:49,921 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 83 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-19 14:51:49,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:52:02,376 WARN L227 SmtUtils]: Spent 8.97s on a formula simplification. DAG size of input: 523 DAG size of output: 269 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 14:52:02,380 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-19 14:52:02,381 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