./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness-1.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_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/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_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/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_82b735b7-92fd-443a-9d85-1d912c925378/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 6e8329de8885610e11451d8b1311f161005fbaac7c4b7180f37a9501d850f1ce --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:40:30,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:40:30,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:40:30,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:40:30,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:40:30,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:40:30,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:40:30,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:40:30,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:40:30,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:40:30,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:40:30,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:40:30,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:40:30,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:40:30,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:40:30,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:40:30,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:40:30,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:40:30,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:40:30,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:40:30,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:40:30,183 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:40:30,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:40:30,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:40:30,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:40:30,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:40:30,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:40:30,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:40:30,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:40:30,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:40:30,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:40:30,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:40:30,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:40:30,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:40:30,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:40:30,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:40:30,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:40:30,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:40:30,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:40:30,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:40:30,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:40:30,222 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 13:40:30,296 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:40:30,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:40:30,304 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:40:30,304 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:40:30,305 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:40:30,305 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:40:30,305 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:40:30,305 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:40:30,306 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:40:30,306 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:40:30,306 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:40:30,307 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:40:30,307 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:40:30,308 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:40:30,308 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:40:30,308 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:40:30,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:40:30,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:40:30,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:40:30,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:40:30,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:40:30,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:40:30,311 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:40:30,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:40:30,311 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:40:30,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:40:30,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:40:30,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:40:30,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:40:30,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:40:30,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:40:30,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:40:30,317 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:40:30,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:40:30,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:40:30,318 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:40:30,319 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:40:30,320 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_82b735b7-92fd-443a-9d85-1d912c925378/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e8329de8885610e11451d8b1311f161005fbaac7c4b7180f37a9501d850f1ce [2021-11-19 13:40:30,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:40:30,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:40:30,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:40:30,684 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:40:30,685 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:40:30,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness-1.i [2021-11-19 13:40:30,760 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/data/f02179d17/af4f3a6f03a8472bb146511602391b89/FLAGbecd10b0e [2021-11-19 13:40:31,798 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:40:31,799 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness-1.i [2021-11-19 13:40:31,859 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/data/f02179d17/af4f3a6f03a8472bb146511602391b89/FLAGbecd10b0e [2021-11-19 13:40:32,182 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/data/f02179d17/af4f3a6f03a8472bb146511602391b89 [2021-11-19 13:40:32,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:40:32,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:40:32,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:40:32,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:40:32,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:40:32,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:40:32" (1/1) ... [2021-11-19 13:40:32,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aa54c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:32, skipping insertion in model container [2021-11-19 13:40:32,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:40:32" (1/1) ... [2021-11-19 13:40:32,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:40:32,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:40:32,726 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_82b735b7-92fd-443a-9d85-1d912c925378/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness-1.i[4492,4505] [2021-11-19 13:40:32,735 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_82b735b7-92fd-443a-9d85-1d912c925378/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness-1.i[4552,4565] [2021-11-19 13:40:32,769 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:40:32,777 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:40:34,014 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:34,015 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:34,016 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:34,017 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:34,019 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:34,036 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:34,037 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:34,039 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:34,040 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:34,566 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:40:34,568 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:40:34,569 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:40:34,571 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:40:34,573 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:40:34,575 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:40:34,576 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:40:34,577 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:40:34,578 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:40:34,579 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:40:34,823 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:40:35,003 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:35,004 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:35,141 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:40:35,216 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 13:40:35,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@59cdafc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:35, skipping insertion in model container [2021-11-19 13:40:35,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:40:35,218 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:40:35,221 INFO L158 Benchmark]: Toolchain (without parser) took 3031.20ms. Allocated memory was 102.8MB in the beginning and 134.2MB in the end (delta: 31.5MB). Free memory was 78.2MB in the beginning and 88.8MB in the end (delta: -10.6MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. [2021-11-19 13:40:35,222 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 102.8MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:40:35,223 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3027.99ms. Allocated memory was 102.8MB in the beginning and 134.2MB in the end (delta: 31.5MB). Free memory was 77.9MB in the beginning and 88.8MB in the end (delta: -10.9MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. [2021-11-19 13:40:35,225 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 102.8MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3027.99ms. Allocated memory was 102.8MB in the beginning and 134.2MB in the end (delta: 31.5MB). Free memory was 77.9MB in the beginning and 88.8MB in the end (delta: -10.9MB). Peak memory consumption was 54.2MB. 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_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/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_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/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_82b735b7-92fd-443a-9d85-1d912c925378/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 6e8329de8885610e11451d8b1311f161005fbaac7c4b7180f37a9501d850f1ce --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:40:37,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:40:37,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:40:38,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:40:38,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:40:38,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:40:38,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:40:38,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:40:38,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:40:38,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:40:38,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:40:38,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:40:38,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:40:38,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:40:38,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:40:38,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:40:38,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:40:38,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:40:38,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:40:38,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:40:38,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:40:38,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:40:38,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:40:38,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:40:38,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:40:38,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:40:38,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:40:38,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:40:38,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:40:38,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:40:38,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:40:38,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:40:38,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:40:38,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:40:38,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:40:38,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:40:38,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:40:38,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:40:38,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:40:38,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:40:38,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:40:38,145 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 13:40:38,198 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:40:38,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:40:38,200 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:40:38,201 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:40:38,201 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:40:38,201 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:40:38,202 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:40:38,202 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:40:38,202 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:40:38,203 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:40:38,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:40:38,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:40:38,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:40:38,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:40:38,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:40:38,207 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:40:38,207 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:40:38,207 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:40:38,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:40:38,208 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:40:38,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:40:38,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:40:38,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:40:38,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:40:38,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:40:38,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:40:38,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:40:38,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:40:38,211 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:40:38,211 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:40:38,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:40:38,211 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:40:38,212 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:40:38,212 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_82b735b7-92fd-443a-9d85-1d912c925378/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e8329de8885610e11451d8b1311f161005fbaac7c4b7180f37a9501d850f1ce [2021-11-19 13:40:38,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:40:38,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:40:38,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:40:38,819 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:40:38,820 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:40:38,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness-1.i [2021-11-19 13:40:38,900 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/data/0d90c1c42/fac645439e854b1bbbd7d4501ca9f613/FLAG3771cae60 [2021-11-19 13:40:40,094 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:40:40,095 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness-1.i [2021-11-19 13:40:40,154 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/data/0d90c1c42/fac645439e854b1bbbd7d4501ca9f613/FLAG3771cae60 [2021-11-19 13:40:40,333 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/data/0d90c1c42/fac645439e854b1bbbd7d4501ca9f613 [2021-11-19 13:40:40,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:40:40,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:40:40,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:40:40,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:40:40,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:40:40,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:40:40" (1/1) ... [2021-11-19 13:40:40,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e889c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:40, skipping insertion in model container [2021-11-19 13:40:40,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:40:40" (1/1) ... [2021-11-19 13:40:40,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:40:40,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:40:40,878 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_82b735b7-92fd-443a-9d85-1d912c925378/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness-1.i[4492,4505] [2021-11-19 13:40:40,888 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_82b735b7-92fd-443a-9d85-1d912c925378/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness-1.i[4552,4565] [2021-11-19 13:40:40,917 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:40:40,923 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:40:42,523 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:42,525 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:42,527 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:42,529 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:42,531 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:42,559 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:42,560 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:42,564 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:42,565 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:43,258 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:40:43,260 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:40:43,261 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:40:43,263 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:40:43,265 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:40:43,266 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:40:43,267 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:40:43,268 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:40:43,269 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:40:43,269 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:40:43,487 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:40:43,683 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:43,683 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:43,797 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:40:43,890 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:40:43,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:40:43,968 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_82b735b7-92fd-443a-9d85-1d912c925378/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness-1.i[4492,4505] [2021-11-19 13:40:43,968 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_82b735b7-92fd-443a-9d85-1d912c925378/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness-1.i[4552,4565] [2021-11-19 13:40:43,970 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:40:43,975 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:40:44,044 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:44,045 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:44,045 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:44,046 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:44,047 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:44,070 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:44,075 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:44,077 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:44,079 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:44,163 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:40:44,164 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:40:44,166 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:40:44,171 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:40:44,172 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:40:44,177 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:40:44,178 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:40:44,178 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:40:44,179 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:40:44,180 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:40:44,223 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:40:44,327 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:44,327 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:44,371 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:40:44,462 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:40:44,492 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_82b735b7-92fd-443a-9d85-1d912c925378/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness-1.i[4492,4505] [2021-11-19 13:40:44,493 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_82b735b7-92fd-443a-9d85-1d912c925378/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness-1.i[4552,4565] [2021-11-19 13:40:44,495 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:40:44,496 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:40:44,549 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:44,550 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:44,550 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:44,551 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:44,551 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:44,558 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:44,559 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:44,560 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:44,561 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:44,598 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:40:44,599 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:40:44,599 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:40:44,600 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:40:44,601 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:40:44,602 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:40:44,602 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:40:44,603 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:40:44,604 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:40:44,605 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:40:44,635 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:40:44,718 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:44,719 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:44,753 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:40:45,245 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:40:45,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:45 WrapperNode [2021-11-19 13:40:45,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:40:45,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:40:45,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:40:45,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:40:45,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:45" (1/1) ... [2021-11-19 13:40:45,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:45" (1/1) ... [2021-11-19 13:40:45,565 INFO L137 Inliner]: procedures = 713, calls = 2617, calls flagged for inlining = 60, calls inlined = 6, statements flattened = 803 [2021-11-19 13:40:45,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:40:45,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:40:45,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:40:45,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:40:45,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:45" (1/1) ... [2021-11-19 13:40:45,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:45" (1/1) ... [2021-11-19 13:40:45,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:45" (1/1) ... [2021-11-19 13:40:45,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:45" (1/1) ... [2021-11-19 13:40:45,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:45" (1/1) ... [2021-11-19 13:40:45,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:45" (1/1) ... [2021-11-19 13:40:45,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:45" (1/1) ... [2021-11-19 13:40:45,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:40:45,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:40:45,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:40:45,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:40:45,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:45" (1/1) ... [2021-11-19 13:40:45,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:40:45,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:40:45,764 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:40:45,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:40:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2021-11-19 13:40:45,832 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2021-11-19 13:40:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:40:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 13:40:45,833 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 13:40:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:40:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 13:40:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 13:40:45,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 13:40:45,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:40:45,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:40:45,836 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-19 13:40:45,836 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-19 13:40:45,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:40:45,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:40:45,837 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 13:40:45,838 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 13:40:45,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:40:45,838 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-19 13:40:45,838 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-19 13:40:45,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 13:40:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-19 13:40:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-19 13:40:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 13:40:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 13:40:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:40:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 13:40:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 13:40:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 13:40:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 13:40:45,841 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 13:40:46,244 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:40:46,247 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:40:48,633 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:40:48,642 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:40:48,643 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 13:40:48,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:40:48 BoogieIcfgContainer [2021-11-19 13:40:48,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:40:48,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:40:48,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:40:48,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:40:48,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:40:40" (1/3) ... [2021-11-19 13:40:48,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bae9959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:40:48, skipping insertion in model container [2021-11-19 13:40:48,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:45" (2/3) ... [2021-11-19 13:40:48,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bae9959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:40:48, skipping insertion in model container [2021-11-19 13:40:48,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:40:48" (3/3) ... [2021-11-19 13:40:48,665 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_eq_c_str_harness-1.i [2021-11-19 13:40:48,684 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:40:48,684 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:40:48,764 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:40:48,771 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 13:40:48,771 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:40:48,795 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 63 states have internal predecessors, (77), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-19 13:40:48,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-19 13:40:48,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:48,807 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-19 13:40:48,808 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:40:48,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:48,814 INFO L85 PathProgramCache]: Analyzing trace with hash -725279613, now seen corresponding path program 1 times [2021-11-19 13:40:48,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:40:48,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968431795] [2021-11-19 13:40:48,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:48,838 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:40:48,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:40:48,842 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:40:48,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:40:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:49,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 13:40:49,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:50,185 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-19 13:40:50,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:50,379 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-19 13:40:50,380 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:40:50,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968431795] [2021-11-19 13:40:50,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [968431795] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:40:50,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:40:50,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-19 13:40:50,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200251392] [2021-11-19 13:40:50,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:40:50,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 13:40:50,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:40:50,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 13:40:50,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:40:50,426 INFO L87 Difference]: Start difference. First operand has 97 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 63 states have internal predecessors, (77), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 13:40:50,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:50,496 INFO L93 Difference]: Finished difference Result 191 states and 276 transitions. [2021-11-19 13:40:50,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 13:40:50,499 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 68 [2021-11-19 13:40:50,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:50,513 INFO L225 Difference]: With dead ends: 191 [2021-11-19 13:40:50,513 INFO L226 Difference]: Without dead ends: 92 [2021-11-19 13:40:50,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 134 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 13:40:50,527 INFO L933 BasicCegarLoop]: 126 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, 126 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 13:40:50,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:40:50,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-19 13:40:50,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-11-19 13:40:50,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 58 states have internal predecessors, (69), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-19 13:40:50,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 120 transitions. [2021-11-19 13:40:50,604 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 120 transitions. Word has length 68 [2021-11-19 13:40:50,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:40:50,605 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 120 transitions. [2021-11-19 13:40:50,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 13:40:50,605 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 120 transitions. [2021-11-19 13:40:50,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-19 13:40:50,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:50,617 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-19 13:40:50,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:50,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:40:50,830 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:40:50,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:50,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1097524929, now seen corresponding path program 1 times [2021-11-19 13:40:50,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:40:50,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449258828] [2021-11-19 13:40:50,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:50,837 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:40:50,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:40:50,839 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:40:50,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:40:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:51,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:40:51,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:52,052 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-19 13:40:52,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:52,321 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-19 13:40:52,322 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:40:52,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449258828] [2021-11-19 13:40:52,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449258828] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:40:52,323 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:40:52,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 13:40:52,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584831315] [2021-11-19 13:40:52,324 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:40:52,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:40:52,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:40:52,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:40:52,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:40:52,328 INFO L87 Difference]: Start difference. First operand 92 states and 120 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-19 13:40:52,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:52,414 INFO L93 Difference]: Finished difference Result 174 states and 235 transitions. [2021-11-19 13:40:52,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:40:52,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 68 [2021-11-19 13:40:52,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:52,419 INFO L225 Difference]: With dead ends: 174 [2021-11-19 13:40:52,420 INFO L226 Difference]: Without dead ends: 116 [2021-11-19 13:40:52,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:40:52,423 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 15 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 368 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 13:40:52,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 368 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:40:52,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-19 13:40:52,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 95. [2021-11-19 13:40:52,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 60 states have internal predecessors, (71), 27 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-19 13:40:52,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 124 transitions. [2021-11-19 13:40:52,450 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 124 transitions. Word has length 68 [2021-11-19 13:40:52,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:40:52,450 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 124 transitions. [2021-11-19 13:40:52,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-19 13:40:52,451 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 124 transitions. [2021-11-19 13:40:52,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-19 13:40:52,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:52,455 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-19 13:40:52,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:52,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:40:52,670 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:40:52,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:52,671 INFO L85 PathProgramCache]: Analyzing trace with hash -747842237, now seen corresponding path program 1 times [2021-11-19 13:40:52,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:40:52,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202932640] [2021-11-19 13:40:52,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:52,673 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:40:52,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:40:52,678 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:40:52,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:40:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:53,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:40:53,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:53,941 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-19 13:40:53,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:54,369 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-19 13:40:54,369 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:40:54,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202932640] [2021-11-19 13:40:54,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202932640] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:40:54,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:40:54,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-19 13:40:54,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715389816] [2021-11-19 13:40:54,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:40:54,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:40:54,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:40:54,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:40:54,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:40:54,372 INFO L87 Difference]: Start difference. First operand 95 states and 124 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-19 13:40:54,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:54,641 INFO L93 Difference]: Finished difference Result 146 states and 191 transitions. [2021-11-19 13:40:54,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:40:54,643 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 68 [2021-11-19 13:40:54,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:54,645 INFO L225 Difference]: With dead ends: 146 [2021-11-19 13:40:54,645 INFO L226 Difference]: Without dead ends: 92 [2021-11-19 13:40:54,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:40:54,647 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 2 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:40:54,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 513 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:40:54,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-19 13:40:54,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-11-19 13:40:54,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 58 states have internal predecessors, (67), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-19 13:40:54,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 118 transitions. [2021-11-19 13:40:54,662 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 118 transitions. Word has length 68 [2021-11-19 13:40:54,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:40:54,663 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 118 transitions. [2021-11-19 13:40:54,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-19 13:40:54,663 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 118 transitions. [2021-11-19 13:40:54,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 13:40:54,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:54,667 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:40:54,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:54,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:40:54,894 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:40:54,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:54,895 INFO L85 PathProgramCache]: Analyzing trace with hash -364789251, now seen corresponding path program 1 times [2021-11-19 13:40:54,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:40:54,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690586686] [2021-11-19 13:40:54,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:54,898 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:40:54,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:40:54,899 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:40:54,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:40:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:55,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:40:55,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:56,002 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-11-19 13:40:56,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:56,322 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-11-19 13:40:56,323 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:40:56,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690586686] [2021-11-19 13:40:56,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690586686] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:40:56,323 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:40:56,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 13:40:56,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947537384] [2021-11-19 13:40:56,324 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:40:56,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:40:56,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:40:56,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:40:56,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:40:56,331 INFO L87 Difference]: Start difference. First operand 92 states and 118 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-19 13:40:56,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:56,366 INFO L93 Difference]: Finished difference Result 129 states and 163 transitions. [2021-11-19 13:40:56,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:40:56,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 96 [2021-11-19 13:40:56,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:56,378 INFO L225 Difference]: With dead ends: 129 [2021-11-19 13:40:56,379 INFO L226 Difference]: Without dead ends: 95 [2021-11-19 13:40:56,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:40:56,384 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 0 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:40:56,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 346 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:40:56,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-19 13:40:56,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-11-19 13:40:56,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 60 states have internal predecessors, (69), 26 states have call successors, (26), 9 states have call predecessors, (26), 10 states have return successors, (26), 26 states have call predecessors, (26), 25 states have call successors, (26) [2021-11-19 13:40:56,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 121 transitions. [2021-11-19 13:40:56,411 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 121 transitions. Word has length 96 [2021-11-19 13:40:56,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:40:56,415 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 121 transitions. [2021-11-19 13:40:56,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-19 13:40:56,416 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 121 transitions. [2021-11-19 13:40:56,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 13:40:56,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:56,425 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:40:56,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:56,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:40:56,642 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:40:56,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:56,643 INFO L85 PathProgramCache]: Analyzing trace with hash 946196880, now seen corresponding path program 1 times [2021-11-19 13:40:56,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:40:56,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810990584] [2021-11-19 13:40:56,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:56,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:40:56,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:40:56,646 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:40:56,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:40:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:57,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 13:40:57,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:58,243 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-11-19 13:40:58,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-19 13:40:59,505 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:40:59,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810990584] [2021-11-19 13:40:59,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1810990584] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:40:59,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1491095622] [2021-11-19 13:40:59,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:59,505 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:40:59,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:40:59,508 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:40:59,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-19 13:41:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:05,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-19 13:41:05,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:05,845 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-19 13:41:05,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:06,574 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-19 13:41:06,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1491095622] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:41:06,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035030885] [2021-11-19 13:41:06,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:06,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:41:06,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:41:06,582 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:41:06,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-19 13:41:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:08,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-19 13:41:08,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:08,454 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-19 13:41:08,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:09,195 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-19 13:41:09,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035030885] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:41:09,195 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:41:09,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12, 12, 12, 12] total 21 [2021-11-19 13:41:09,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44694641] [2021-11-19 13:41:09,196 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:41:09,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-19 13:41:09,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:41:09,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-19 13:41:09,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:41:09,202 INFO L87 Difference]: Start difference. First operand 95 states and 121 transitions. Second operand has 21 states, 18 states have (on average 3.5) internal successors, (63), 15 states have internal predecessors, (63), 10 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (40), 13 states have call predecessors, (40), 9 states have call successors, (40) [2021-11-19 13:41:10,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:10,426 INFO L93 Difference]: Finished difference Result 171 states and 226 transitions. [2021-11-19 13:41:10,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:41:10,428 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 3.5) internal successors, (63), 15 states have internal predecessors, (63), 10 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (40), 13 states have call predecessors, (40), 9 states have call successors, (40) Word has length 96 [2021-11-19 13:41:10,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:10,432 INFO L225 Difference]: With dead ends: 171 [2021-11-19 13:41:10,432 INFO L226 Difference]: Without dead ends: 136 [2021-11-19 13:41:10,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2021-11-19 13:41:10,434 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 93 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:10,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 1197 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 13:41:10,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-19 13:41:10,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 126. [2021-11-19 13:41:10,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 76 states have (on average 1.1710526315789473) internal successors, (89), 78 states have internal predecessors, (89), 37 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (40), 39 states have call predecessors, (40), 36 states have call successors, (40) [2021-11-19 13:41:10,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 166 transitions. [2021-11-19 13:41:10,455 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 166 transitions. Word has length 96 [2021-11-19 13:41:10,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:10,456 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 166 transitions. [2021-11-19 13:41:10,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 3.5) internal successors, (63), 15 states have internal predecessors, (63), 10 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (40), 13 states have call predecessors, (40), 9 states have call successors, (40) [2021-11-19 13:41:10,457 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 166 transitions. [2021-11-19 13:41:10,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-19 13:41:10,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:10,460 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:10,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:10,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-19 13:41:10,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:11,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:41:11,071 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:41:11,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:11,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1827604963, now seen corresponding path program 1 times [2021-11-19 13:41:11,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:41:11,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918865421] [2021-11-19 13:41:11,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:11,073 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:41:11,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:41:11,074 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:41:11,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:41:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:11,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-19 13:41:11,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:13,010 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-19 13:41:13,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-19 13:41:14,756 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:41:14,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918865421] [2021-11-19 13:41:14,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918865421] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:41:14,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2144382418] [2021-11-19 13:41:14,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:14,757 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:41:14,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:41:14,762 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:41:14,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-19 13:41:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:20,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 13:41:20,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:21,102 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-19 13:41:21,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:22,042 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-19 13:41:22,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2144382418] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:41:22,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797988890] [2021-11-19 13:41:22,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:22,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:41:22,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:41:22,044 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:41:22,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-19 13:41:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:23,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 13:41:23,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:23,744 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-19 13:41:23,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:24,648 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-19 13:41:24,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797988890] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:41:24,648 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:41:24,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15, 15, 15, 15] total 29 [2021-11-19 13:41:24,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339613465] [2021-11-19 13:41:24,649 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:41:24,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-19 13:41:24,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:41:24,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-19 13:41:24,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2021-11-19 13:41:24,652 INFO L87 Difference]: Start difference. First operand 126 states and 166 transitions. Second operand has 29 states, 25 states have (on average 2.72) internal successors, (68), 24 states have internal predecessors, (68), 13 states have call successors, (37), 2 states have call predecessors, (37), 7 states have return successors, (39), 14 states have call predecessors, (39), 12 states have call successors, (39) [2021-11-19 13:41:27,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:27,598 INFO L93 Difference]: Finished difference Result 188 states and 254 transitions. [2021-11-19 13:41:27,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-19 13:41:27,599 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 2.72) internal successors, (68), 24 states have internal predecessors, (68), 13 states have call successors, (37), 2 states have call predecessors, (37), 7 states have return successors, (39), 14 states have call predecessors, (39), 12 states have call successors, (39) Word has length 107 [2021-11-19 13:41:27,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:27,602 INFO L225 Difference]: With dead ends: 188 [2021-11-19 13:41:27,602 INFO L226 Difference]: Without dead ends: 152 [2021-11-19 13:41:27,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 609 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=132, Invalid=1058, Unknown=0, NotChecked=0, Total=1190 [2021-11-19 13:41:27,604 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 124 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:27,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 2187 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 13:41:27,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-19 13:41:27,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 128. [2021-11-19 13:41:27,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 77 states have (on average 1.1688311688311688) internal successors, (90), 80 states have internal predecessors, (90), 37 states have call successors, (37), 9 states have call predecessors, (37), 13 states have return successors, (44), 39 states have call predecessors, (44), 36 states have call successors, (44) [2021-11-19 13:41:27,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 171 transitions. [2021-11-19 13:41:27,628 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 171 transitions. Word has length 107 [2021-11-19 13:41:27,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:27,629 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 171 transitions. [2021-11-19 13:41:27,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 2.72) internal successors, (68), 24 states have internal predecessors, (68), 13 states have call successors, (37), 2 states have call predecessors, (37), 7 states have return successors, (39), 14 states have call predecessors, (39), 12 states have call successors, (39) [2021-11-19 13:41:27,630 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 171 transitions. [2021-11-19 13:41:27,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-19 13:41:27,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:27,632 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-19 13:41:27,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:27,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:28,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:28,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:41:28,251 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:41:28,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:28,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2137451966, now seen corresponding path program 1 times [2021-11-19 13:41:28,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:41:28,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694821812] [2021-11-19 13:41:28,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:28,255 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:41:28,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:41:28,257 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:41:28,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:41:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:29,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 13:41:29,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:29,478 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-19 13:41:29,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-19 13:41:30,246 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:41:30,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694821812] [2021-11-19 13:41:30,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694821812] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:41:30,247 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:41:30,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 13 [2021-11-19 13:41:30,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675091973] [2021-11-19 13:41:30,247 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:41:30,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 13:41:30,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:41:30,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 13:41:30,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:41:30,250 INFO L87 Difference]: Start difference. First operand 128 states and 171 transitions. Second operand has 13 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 6 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2021-11-19 13:41:31,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:31,028 INFO L93 Difference]: Finished difference Result 168 states and 232 transitions. [2021-11-19 13:41:31,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:41:31,029 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 6 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 101 [2021-11-19 13:41:31,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:31,032 INFO L225 Difference]: With dead ends: 168 [2021-11-19 13:41:31,032 INFO L226 Difference]: Without dead ends: 151 [2021-11-19 13:41:31,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:41:31,034 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 96 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:31,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 1161 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:41:31,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-19 13:41:31,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2021-11-19 13:41:31,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 87 states have (on average 1.1724137931034482) internal successors, (102), 89 states have internal predecessors, (102), 50 states have call successors, (50), 9 states have call predecessors, (50), 13 states have return successors, (57), 53 states have call predecessors, (57), 47 states have call successors, (57) [2021-11-19 13:41:31,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 209 transitions. [2021-11-19 13:41:31,058 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 209 transitions. Word has length 101 [2021-11-19 13:41:31,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:31,059 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 209 transitions. [2021-11-19 13:41:31,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 6 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2021-11-19 13:41:31,060 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 209 transitions. [2021-11-19 13:41:31,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-19 13:41:31,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:31,062 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:31,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:31,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:41:31,266 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:41:31,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:31,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1452523894, now seen corresponding path program 1 times [2021-11-19 13:41:31,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:41:31,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087617898] [2021-11-19 13:41:31,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:31,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:41:31,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:41:31,270 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:41:31,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 13:41:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:32,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 13:41:32,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:32,784 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-11-19 13:41:32,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:34,761 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-19 13:41:34,761 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:41:34,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087617898] [2021-11-19 13:41:34,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087617898] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:41:34,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2109549537] [2021-11-19 13:41:34,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:34,762 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:41:34,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:41:34,763 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:41:34,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-19 13:41:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:40,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 13:41:40,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:41,264 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-19 13:41:41,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:43,525 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-19 13:41:43,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2109549537] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:41:43,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540866040] [2021-11-19 13:41:43,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:43,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:41:43,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:41:43,534 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:41:43,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-19 13:41:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:44,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 13:41:44,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:45,343 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-19 13:41:45,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:46,368 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-19 13:41:46,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540866040] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:41:46,368 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:41:46,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14, 14, 14, 14] total 31 [2021-11-19 13:41:46,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678313323] [2021-11-19 13:41:46,369 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:41:46,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-19 13:41:46,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:41:46,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-19 13:41:46,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=812, Unknown=0, NotChecked=0, Total=930 [2021-11-19 13:41:46,375 INFO L87 Difference]: Start difference. First operand 151 states and 209 transitions. Second operand has 31 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 24 states have internal predecessors, (85), 12 states have call successors, (42), 2 states have call predecessors, (42), 5 states have return successors, (45), 15 states have call predecessors, (45), 11 states have call successors, (45) [2021-11-19 13:41:49,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:49,797 INFO L93 Difference]: Finished difference Result 206 states and 293 transitions. [2021-11-19 13:41:49,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 13:41:49,798 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 24 states have internal predecessors, (85), 12 states have call successors, (42), 2 states have call predecessors, (42), 5 states have return successors, (45), 15 states have call predecessors, (45), 11 states have call successors, (45) Word has length 100 [2021-11-19 13:41:49,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:49,801 INFO L225 Difference]: With dead ends: 206 [2021-11-19 13:41:49,802 INFO L226 Difference]: Without dead ends: 186 [2021-11-19 13:41:49,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 564 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=177, Invalid=1155, Unknown=0, NotChecked=0, Total=1332 [2021-11-19 13:41:49,803 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 162 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:49,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 1490 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-19 13:41:49,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-19 13:41:49,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 167. [2021-11-19 13:41:49,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 95 states have (on average 1.1894736842105262) internal successors, (113), 98 states have internal predecessors, (113), 57 states have call successors, (57), 9 states have call predecessors, (57), 14 states have return successors, (70), 60 states have call predecessors, (70), 54 states have call successors, (70) [2021-11-19 13:41:49,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 240 transitions. [2021-11-19 13:41:49,833 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 240 transitions. Word has length 100 [2021-11-19 13:41:49,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:49,834 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 240 transitions. [2021-11-19 13:41:49,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 24 states have internal predecessors, (85), 12 states have call successors, (42), 2 states have call predecessors, (42), 5 states have return successors, (45), 15 states have call predecessors, (45), 11 states have call successors, (45) [2021-11-19 13:41:49,835 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 240 transitions. [2021-11-19 13:41:49,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-19 13:41:49,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:49,838 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:49,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:50,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:50,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:50,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:41:50,462 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:41:50,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:50,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1754580795, now seen corresponding path program 1 times [2021-11-19 13:41:50,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:41:50,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211883516] [2021-11-19 13:41:50,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:50,465 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:41:50,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:41:50,466 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:41:50,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 13:41:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:56,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 1497 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-19 13:41:56,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:57,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:41:57,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 79 [2021-11-19 13:42:04,129 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_save_byte_from_array_#in~storage#1.offset_BEFORE_CALL_1| (_ BitVec 64)) (|v_save_byte_from_array_#in~storage#1.base_BEFORE_CALL_1| (_ BitVec 64)) (|save_byte_from_array_nondet_size_t_#res#1| (_ BitVec 64))) (let ((.cse0 (select |c_#memory_int| |v_save_byte_from_array_#in~storage#1.base_BEFORE_CALL_1|))) (and (= ((_ extract 39 32) |save_byte_from_array_nondet_size_t_#res#1|) (select .cse0 (bvadd (_ bv4 64) |v_save_byte_from_array_#in~storage#1.offset_BEFORE_CALL_1|))) (= (select .cse0 (bvadd (_ bv1 64) |v_save_byte_from_array_#in~storage#1.offset_BEFORE_CALL_1|)) ((_ extract 15 8) |save_byte_from_array_nondet_size_t_#res#1|)) (= ((_ extract 31 24) |save_byte_from_array_nondet_size_t_#res#1|) (select .cse0 (bvadd (_ bv3 64) |v_save_byte_from_array_#in~storage#1.offset_BEFORE_CALL_1|))) (= ((_ extract 7 0) |save_byte_from_array_nondet_size_t_#res#1|) (select .cse0 |v_save_byte_from_array_#in~storage#1.offset_BEFORE_CALL_1|)) (= ((_ extract 55 48) |save_byte_from_array_nondet_size_t_#res#1|) (select .cse0 (bvadd |v_save_byte_from_array_#in~storage#1.offset_BEFORE_CALL_1| (_ bv6 64)))) (= (select .cse0 (bvadd (_ bv2 64) |v_save_byte_from_array_#in~storage#1.offset_BEFORE_CALL_1|)) ((_ extract 23 16) |save_byte_from_array_nondet_size_t_#res#1|)) (= (select .cse0 (bvadd |v_save_byte_from_array_#in~storage#1.offset_BEFORE_CALL_1| (_ bv5 64))) ((_ extract 47 40) |save_byte_from_array_nondet_size_t_#res#1|)) (= (select .cse0 (bvadd |v_save_byte_from_array_#in~storage#1.offset_BEFORE_CALL_1| (_ bv7 64))) ((_ extract 63 56) |save_byte_from_array_nondet_size_t_#res#1|))))) is different from true [2021-11-19 13:43:41,049 WARN L227 SmtUtils]: Spent 1.46m on a formula simplification. DAG size of input: 242 DAG size of output: 71 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 13:43:41,050 INFO L354 Elim1Store]: treesize reduction 592, result has 20.0 percent of original size [2021-11-19 13:43:41,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 158 treesize of output 208 [2021-11-19 13:50:50,724 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-19 13:50:50,725 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:50:50,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211883516] [2021-11-19 13:50:50,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-19 13:50:50,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1150991070] [2021-11-19 13:50:50,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:50:50,726 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:50:50,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:50:50,730 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:50:50,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-19 13:50:50,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82b735b7-92fd-443a-9d85-1d912c925378/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process