./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/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_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/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_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/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 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:20:46,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:20:46,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:20:46,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:20:46,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:20:46,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:20:46,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:20:46,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:20:46,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:20:46,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:20:46,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:20:46,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:20:46,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:20:46,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:20:46,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:20:46,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:20:46,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:20:46,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:20:46,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:20:46,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:20:46,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:20:46,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:20:46,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:20:46,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:20:46,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:20:46,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:20:46,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:20:46,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:20:46,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:20:46,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:20:46,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:20:46,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:20:46,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:20:46,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:20:46,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:20:46,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:20:46,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:20:46,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:20:46,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:20:46,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:20:46,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:20:46,312 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 13:20:46,338 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:20:46,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:20:46,340 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:20:46,340 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:20:46,340 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:20:46,341 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:20:46,341 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:20:46,341 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:20:46,342 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:20:46,342 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:20:46,342 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:20:46,342 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:20:46,343 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:20:46,343 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:20:46,343 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:20:46,344 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:20:46,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:20:46,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:20:46,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:20:46,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:20:46,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:20:46,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:20:46,346 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:20:46,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:20:46,347 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:20:46,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:20:46,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:20:46,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:20:46,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:20:46,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:20:46,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:20:46,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:20:46,350 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:20:46,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:20:46,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:20:46,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:20:46,351 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:20:46,351 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_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce [2021-11-19 13:20:46,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:20:46,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:20:46,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:20:46,694 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:20:46,695 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:20:46,697 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2021-11-19 13:20:46,787 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/data/09cc32899/8ad32f0c6b31459084c3bb1e00fbbcf7/FLAG0ff40c53d [2021-11-19 13:20:47,747 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:20:47,748 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2021-11-19 13:20:47,813 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/data/09cc32899/8ad32f0c6b31459084c3bb1e00fbbcf7/FLAG0ff40c53d [2021-11-19 13:20:48,130 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/data/09cc32899/8ad32f0c6b31459084c3bb1e00fbbcf7 [2021-11-19 13:20:48,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:20:48,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:20:48,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:20:48,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:20:48,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:20:48,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:20:48" (1/1) ... [2021-11-19 13:20:48,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7072fbb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:48, skipping insertion in model container [2021-11-19 13:20:48,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:20:48" (1/1) ... [2021-11-19 13:20:48,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:20:48,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:20:48,607 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_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4496,4509] [2021-11-19 13:20:48,614 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4556,4569] [2021-11-19 13:20:48,641 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:20:48,648 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:20:49,779 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:49,780 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:49,781 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:49,782 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:49,783 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:49,804 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:49,805 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:49,807 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:49,808 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:50,307 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:20:50,309 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:20:50,311 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:20:50,313 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:20:50,315 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:20:50,316 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:20:50,317 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:20:50,318 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:20:50,319 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:20:50,320 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:20:50,563 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:20:50,779 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:50,780 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:50,956 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:20:51,035 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 13:20:51,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7269ea18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:51, skipping insertion in model container [2021-11-19 13:20:51,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:20:51,038 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:20:51,040 INFO L158 Benchmark]: Toolchain (without parser) took 2905.34ms. Allocated memory was 113.2MB in the beginning and 148.9MB in the end (delta: 35.7MB). Free memory was 77.0MB in the beginning and 98.9MB in the end (delta: -21.9MB). Peak memory consumption was 41.5MB. Max. memory is 16.1GB. [2021-11-19 13:20:51,041 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 113.2MB. Free memory was 68.0MB in the beginning and 68.0MB in the end (delta: 72.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:20:51,043 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2902.82ms. Allocated memory was 113.2MB in the beginning and 148.9MB in the end (delta: 35.7MB). Free memory was 76.7MB in the beginning and 98.9MB in the end (delta: -22.2MB). Peak memory consumption was 41.5MB. Max. memory is 16.1GB. [2021-11-19 13:20:51,052 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 113.2MB. Free memory was 68.0MB in the beginning and 68.0MB in the end (delta: 72.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2902.82ms. Allocated memory was 113.2MB in the beginning and 148.9MB in the end (delta: 35.7MB). Free memory was 76.7MB in the beginning and 98.9MB in the end (delta: -22.2MB). Peak memory consumption was 41.5MB. 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_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/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_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/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_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/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 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:20:53,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:20:53,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:20:53,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:20:53,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:20:53,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:20:53,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:20:53,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:20:53,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:20:53,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:20:53,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:20:53,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:20:53,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:20:53,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:20:53,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:20:53,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:20:53,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:20:53,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:20:53,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:20:53,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:20:53,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:20:53,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:20:53,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:20:53,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:20:53,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:20:53,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:20:53,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:20:53,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:20:53,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:20:53,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:20:53,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:20:53,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:20:53,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:20:53,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:20:53,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:20:53,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:20:53,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:20:53,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:20:53,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:20:53,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:20:53,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:20:53,771 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 13:20:53,824 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:20:53,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:20:53,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:20:53,826 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:20:53,827 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:20:53,827 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:20:53,828 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:20:53,828 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:20:53,828 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:20:53,829 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:20:53,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:20:53,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:20:53,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:20:53,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:20:53,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:20:53,834 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:20:53,834 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:20:53,834 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:20:53,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:20:53,835 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:20:53,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:20:53,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:20:53,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:20:53,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:20:53,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:20:53,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:20:53,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:20:53,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:20:53,839 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:20:53,839 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:20:53,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:20:53,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:20:53,840 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:20:53,841 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_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce [2021-11-19 13:20:54,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:20:54,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:20:54,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:20:54,278 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:20:54,278 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:20:54,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2021-11-19 13:20:54,365 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/data/7108396eb/4ca70ad3a6874f389a3c5e080dc0ab6c/FLAG7dca13557 [2021-11-19 13:20:55,547 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:20:55,549 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2021-11-19 13:20:55,612 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/data/7108396eb/4ca70ad3a6874f389a3c5e080dc0ab6c/FLAG7dca13557 [2021-11-19 13:20:55,901 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/data/7108396eb/4ca70ad3a6874f389a3c5e080dc0ab6c [2021-11-19 13:20:55,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:20:55,907 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:20:55,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:20:55,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:20:55,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:20:55,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:20:55" (1/1) ... [2021-11-19 13:20:55,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f6e41a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:55, skipping insertion in model container [2021-11-19 13:20:55,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:20:55" (1/1) ... [2021-11-19 13:20:55,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:20:56,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:20:56,504 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_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4496,4509] [2021-11-19 13:20:56,511 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_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4556,4569] [2021-11-19 13:20:56,538 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:20:56,545 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:20:57,581 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:57,582 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:57,583 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:57,584 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:57,585 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:57,609 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:57,610 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:57,612 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:57,613 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:58,110 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:20:58,111 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:20:58,112 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:20:58,114 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:20:58,115 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:20:58,116 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:20:58,117 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:20:58,117 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:20:58,118 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:20:58,119 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:20:58,319 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:20:58,420 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:58,421 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:58,610 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:20:58,681 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:20:58,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:20:58,759 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_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4496,4509] [2021-11-19 13:20:58,760 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_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4556,4569] [2021-11-19 13:20:58,766 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:20:58,769 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:20:58,840 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:58,846 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:58,847 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:58,848 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:58,849 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:58,862 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:58,863 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:58,864 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:58,865 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:58,933 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:20:58,934 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:20:58,935 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:20:58,936 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:20:58,943 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:20:58,945 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:20:58,946 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:20:58,947 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:20:58,948 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:20:58,948 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:20:58,974 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:20:59,085 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:59,086 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:59,149 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:20:59,192 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:20:59,217 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_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4496,4509] [2021-11-19 13:20:59,217 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_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4556,4569] [2021-11-19 13:20:59,219 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:20:59,223 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:20:59,298 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:59,299 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:59,299 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:59,299 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:59,299 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:59,304 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:59,305 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:59,306 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:59,306 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:59,336 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:20:59,339 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:20:59,339 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:20:59,340 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:20:59,341 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:20:59,342 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:20:59,343 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:20:59,343 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:20:59,344 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:20:59,345 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:20:59,365 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:20:59,448 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:59,448 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:20:59,496 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:20:59,890 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:20:59,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:59 WrapperNode [2021-11-19 13:20:59,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:20:59,892 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:20:59,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:20:59,893 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:20:59,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:59" (1/1) ... [2021-11-19 13:21:00,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:59" (1/1) ... [2021-11-19 13:21:00,137 INFO L137 Inliner]: procedures = 715, calls = 2794, calls flagged for inlining = 61, calls inlined = 8, statements flattened = 875 [2021-11-19 13:21:00,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:21:00,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:21:00,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:21:00,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:21:00,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:59" (1/1) ... [2021-11-19 13:21:00,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:59" (1/1) ... [2021-11-19 13:21:00,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:59" (1/1) ... [2021-11-19 13:21:00,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:59" (1/1) ... [2021-11-19 13:21:00,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:59" (1/1) ... [2021-11-19 13:21:00,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:59" (1/1) ... [2021-11-19 13:21:00,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:59" (1/1) ... [2021-11-19 13:21:00,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:21:00,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:21:00,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:21:00,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:21:00,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:59" (1/1) ... [2021-11-19 13:21:00,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:21:00,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:21:00,338 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:21:00,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:21:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-11-19 13:21:00,388 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-11-19 13:21:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-19 13:21:00,388 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-19 13:21:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2021-11-19 13:21:00,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2021-11-19 13:21:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 13:21:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:21:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 13:21:00,395 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 13:21:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:21:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 13:21:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 13:21:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 13:21:00,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 13:21:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:21:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:21:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:21:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:21:00,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:21:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 13:21:00,397 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 13:21:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:21:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 13:21:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 13:21:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 13:21:00,398 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 13:21:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:21:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:21:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2021-11-19 13:21:00,399 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2021-11-19 13:21:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 13:21:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 13:21:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 13:21:00,400 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 13:21:00,400 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 13:21:00,400 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 13:21:00,401 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 13:21:00,766 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:21:00,767 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:21:04,978 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:21:04,986 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:21:04,986 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 13:21:04,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:21:04 BoogieIcfgContainer [2021-11-19 13:21:04,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:21:04,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:21:04,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:21:04,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:21:04,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:20:55" (1/3) ... [2021-11-19 13:21:04,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a24504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:21:04, skipping insertion in model container [2021-11-19 13:21:04,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:59" (2/3) ... [2021-11-19 13:21:04,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a24504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:21:04, skipping insertion in model container [2021-11-19 13:21:04,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:21:04" (3/3) ... [2021-11-19 13:21:04,997 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_eq_byte_buf_harness.i [2021-11-19 13:21:05,003 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:21:05,003 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:21:05,058 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:21:05,064 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 13:21:05,065 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:21:05,087 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 88 states have (on average 1.2727272727272727) internal successors, (112), 89 states have internal predecessors, (112), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-19 13:21:05,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-19 13:21:05,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:05,097 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:21:05,097 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:21:05,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:05,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1615832393, now seen corresponding path program 1 times [2021-11-19 13:21:05,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:05,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625799502] [2021-11-19 13:21:05,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:05,121 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:05,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:05,122 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:05,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:21:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:06,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:21:06,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:06,667 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 13:21:06,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-19 13:21:07,091 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:07,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625799502] [2021-11-19 13:21:07,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625799502] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:21:07,092 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:21:07,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 13:21:07,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349638369] [2021-11-19 13:21:07,095 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:07,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:21:07,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:07,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:21:07,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:21:07,140 INFO L87 Difference]: Start difference. First operand has 131 states, 88 states have (on average 1.2727272727272727) internal successors, (112), 89 states have internal predecessors, (112), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-19 13:21:07,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:21:07,348 INFO L93 Difference]: Finished difference Result 256 states and 357 transitions. [2021-11-19 13:21:07,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:21:07,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 72 [2021-11-19 13:21:07,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:21:07,361 INFO L225 Difference]: With dead ends: 256 [2021-11-19 13:21:07,361 INFO L226 Difference]: Without dead ends: 129 [2021-11-19 13:21:07,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:21:07,374 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 51 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:21:07,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 432 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:21:07,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-19 13:21:07,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-11-19 13:21:07,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 86 states have (on average 1.255813953488372) internal successors, (108), 88 states have internal predecessors, (108), 31 states have call successors, (31), 10 states have call predecessors, (31), 11 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2021-11-19 13:21:07,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 170 transitions. [2021-11-19 13:21:07,458 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 170 transitions. Word has length 72 [2021-11-19 13:21:07,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:21:07,460 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 170 transitions. [2021-11-19 13:21:07,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-19 13:21:07,460 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 170 transitions. [2021-11-19 13:21:07,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-19 13:21:07,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:07,472 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:21:07,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:21:07,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:21:07,687 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:21:07,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:07,687 INFO L85 PathProgramCache]: Analyzing trace with hash 170819548, now seen corresponding path program 1 times [2021-11-19 13:21:07,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:07,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145888506] [2021-11-19 13:21:07,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:07,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:07,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:07,693 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:07,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:21:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:08,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:21:08,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:08,893 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 13:21:08,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:09,088 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-19 13:21:09,089 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:09,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145888506] [2021-11-19 13:21:09,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145888506] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:21:09,089 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:21:09,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 13:21:09,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095590276] [2021-11-19 13:21:09,090 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:09,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:21:09,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:09,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:21:09,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:21:09,093 INFO L87 Difference]: Start difference. First operand 129 states and 170 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:21:09,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:21:09,162 INFO L93 Difference]: Finished difference Result 238 states and 319 transitions. [2021-11-19 13:21:09,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:21:09,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 78 [2021-11-19 13:21:09,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:21:09,166 INFO L225 Difference]: With dead ends: 238 [2021-11-19 13:21:09,166 INFO L226 Difference]: Without dead ends: 151 [2021-11-19 13:21:09,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:21:09,168 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 42 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:21:09,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 501 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:21:09,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-19 13:21:09,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 131. [2021-11-19 13:21:09,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 88 states have (on average 1.25) internal successors, (110), 90 states have internal predecessors, (110), 31 states have call successors, (31), 10 states have call predecessors, (31), 11 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2021-11-19 13:21:09,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 172 transitions. [2021-11-19 13:21:09,192 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 172 transitions. Word has length 78 [2021-11-19 13:21:09,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:21:09,192 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 172 transitions. [2021-11-19 13:21:09,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:21:09,193 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 172 transitions. [2021-11-19 13:21:09,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-19 13:21:09,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:09,198 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:21:09,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:21:09,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:21:09,426 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:21:09,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:09,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1200987750, now seen corresponding path program 1 times [2021-11-19 13:21:09,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:09,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593878987] [2021-11-19 13:21:09,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:09,429 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:09,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:09,430 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:09,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:21:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:10,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 1463 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:21:10,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:10,610 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 13:21:10,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:10,840 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-19 13:21:10,840 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:10,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593878987] [2021-11-19 13:21:10,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593878987] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:21:10,841 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:21:10,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 13:21:10,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128954870] [2021-11-19 13:21:10,841 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:10,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:21:10,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:10,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:21:10,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:21:10,844 INFO L87 Difference]: Start difference. First operand 131 states and 172 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:21:10,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:21:10,978 INFO L93 Difference]: Finished difference Result 240 states and 320 transitions. [2021-11-19 13:21:10,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:21:10,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 78 [2021-11-19 13:21:10,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:21:10,982 INFO L225 Difference]: With dead ends: 240 [2021-11-19 13:21:10,982 INFO L226 Difference]: Without dead ends: 151 [2021-11-19 13:21:10,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:21:10,985 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 55 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:21:10,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 650 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:21:10,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-19 13:21:11,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 133. [2021-11-19 13:21:11,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 90 states have (on average 1.2444444444444445) internal successors, (112), 92 states have internal predecessors, (112), 31 states have call successors, (31), 10 states have call predecessors, (31), 11 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2021-11-19 13:21:11,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 174 transitions. [2021-11-19 13:21:11,004 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 174 transitions. Word has length 78 [2021-11-19 13:21:11,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:21:11,005 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 174 transitions. [2021-11-19 13:21:11,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:21:11,005 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 174 transitions. [2021-11-19 13:21:11,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-19 13:21:11,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:11,007 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:21:11,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:21:11,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:21:11,221 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:21:11,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:11,222 INFO L85 PathProgramCache]: Analyzing trace with hash -77326946, now seen corresponding path program 1 times [2021-11-19 13:21:11,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:11,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494245009] [2021-11-19 13:21:11,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:11,228 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:11,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:11,229 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:11,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:21:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:12,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 13:21:12,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:12,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-19 13:21:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 13:21:13,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:14,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-19 13:21:15,055 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-19 13:21:15,055 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:15,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494245009] [2021-11-19 13:21:15,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494245009] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:21:15,056 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:21:15,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 10] imperfect sequences [] total 19 [2021-11-19 13:21:15,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413092780] [2021-11-19 13:21:15,056 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:15,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 13:21:15,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:15,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 13:21:15,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:21:15,059 INFO L87 Difference]: Start difference. First operand 133 states and 174 transitions. Second operand has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 16 states have internal predecessors, (63), 7 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2021-11-19 13:21:17,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:19,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:21,237 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:21:23,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:21:23,166 INFO L93 Difference]: Finished difference Result 254 states and 330 transitions. [2021-11-19 13:21:23,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 13:21:23,167 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 16 states have internal predecessors, (63), 7 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 78 [2021-11-19 13:21:23,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:21:23,176 INFO L225 Difference]: With dead ends: 254 [2021-11-19 13:21:23,176 INFO L226 Difference]: Without dead ends: 156 [2021-11-19 13:21:23,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-11-19 13:21:23,179 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 203 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 58 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:21:23,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 1595 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 235 Invalid, 3 Unknown, 122 Unchecked, 7.8s Time] [2021-11-19 13:21:23,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-19 13:21:23,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 139. [2021-11-19 13:21:23,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 96 states have (on average 1.25) internal successors, (120), 97 states have internal predecessors, (120), 31 states have call successors, (31), 11 states have call predecessors, (31), 11 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2021-11-19 13:21:23,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 182 transitions. [2021-11-19 13:21:23,200 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 182 transitions. Word has length 78 [2021-11-19 13:21:23,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:21:23,201 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 182 transitions. [2021-11-19 13:21:23,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 16 states have internal predecessors, (63), 7 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2021-11-19 13:21:23,201 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 182 transitions. [2021-11-19 13:21:23,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-19 13:21:23,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:23,203 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:21:23,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:21:23,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:21:23,413 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:21:23,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:23,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1681909330, now seen corresponding path program 1 times [2021-11-19 13:21:23,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:23,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140768851] [2021-11-19 13:21:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:23,415 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:23,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:23,417 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:23,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:21:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:24,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:21:24,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:24,828 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-19 13:21:24,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:25,248 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-19 13:21:25,248 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:25,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140768851] [2021-11-19 13:21:25,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140768851] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:21:25,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:21:25,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-19 13:21:25,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025425719] [2021-11-19 13:21:25,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:25,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:21:25,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:25,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:21:25,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:21:25,251 INFO L87 Difference]: Start difference. First operand 139 states and 182 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-19 13:21:25,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:21:25,632 INFO L93 Difference]: Finished difference Result 239 states and 312 transitions. [2021-11-19 13:21:25,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:21:25,634 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 82 [2021-11-19 13:21:25,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:21:25,637 INFO L225 Difference]: With dead ends: 239 [2021-11-19 13:21:25,638 INFO L226 Difference]: Without dead ends: 147 [2021-11-19 13:21:25,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:21:25,642 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 12 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:21:25,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1191 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:21:25,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-19 13:21:25,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 144. [2021-11-19 13:21:25,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 100 states have (on average 1.24) internal successors, (124), 102 states have internal predecessors, (124), 31 states have call successors, (31), 11 states have call predecessors, (31), 12 states have return successors, (33), 30 states have call predecessors, (33), 30 states have call successors, (33) [2021-11-19 13:21:25,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 188 transitions. [2021-11-19 13:21:25,680 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 188 transitions. Word has length 82 [2021-11-19 13:21:25,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:21:25,682 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 188 transitions. [2021-11-19 13:21:25,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-19 13:21:25,682 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 188 transitions. [2021-11-19 13:21:25,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-19 13:21:25,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:25,690 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:21:25,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:21:25,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:21:25,901 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:21:25,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:25,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1833255661, now seen corresponding path program 1 times [2021-11-19 13:21:25,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:25,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240689643] [2021-11-19 13:21:25,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:25,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:25,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:25,905 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:25,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:21:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:26,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 1476 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:21:26,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:27,123 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-19 13:21:27,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:27,375 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-19 13:21:27,375 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:27,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240689643] [2021-11-19 13:21:27,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240689643] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:21:27,376 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:21:27,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-19 13:21:27,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417726184] [2021-11-19 13:21:27,377 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:27,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:21:27,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:27,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:21:27,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:21:27,379 INFO L87 Difference]: Start difference. First operand 144 states and 188 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-19 13:21:27,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:21:27,855 INFO L93 Difference]: Finished difference Result 258 states and 344 transitions. [2021-11-19 13:21:27,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:21:27,856 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 84 [2021-11-19 13:21:27,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:21:27,859 INFO L225 Difference]: With dead ends: 258 [2021-11-19 13:21:27,859 INFO L226 Difference]: Without dead ends: 177 [2021-11-19 13:21:27,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:21:27,861 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 67 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:21:27,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 859 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:21:27,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-19 13:21:27,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 156. [2021-11-19 13:21:27,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 108 states have (on average 1.2314814814814814) internal successors, (133), 110 states have internal predecessors, (133), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (39), 34 states have call predecessors, (39), 34 states have call successors, (39) [2021-11-19 13:21:27,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 207 transitions. [2021-11-19 13:21:27,883 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 207 transitions. Word has length 84 [2021-11-19 13:21:27,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:21:27,884 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 207 transitions. [2021-11-19 13:21:27,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-19 13:21:27,884 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 207 transitions. [2021-11-19 13:21:27,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-19 13:21:27,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:27,886 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:21:27,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:21:28,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:21:28,109 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:21:28,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:28,110 INFO L85 PathProgramCache]: Analyzing trace with hash 27817327, now seen corresponding path program 1 times [2021-11-19 13:21:28,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:28,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380902497] [2021-11-19 13:21:28,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:28,112 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:28,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:28,113 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:28,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:21:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:29,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 1476 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:21:29,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:29,480 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-19 13:21:29,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:29,882 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-19 13:21:29,882 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:29,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380902497] [2021-11-19 13:21:29,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380902497] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:21:29,882 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:21:29,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 13:21:29,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93572936] [2021-11-19 13:21:29,883 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:29,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:21:29,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:29,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:21:29,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:21:29,884 INFO L87 Difference]: Start difference. First operand 156 states and 207 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 13:21:30,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:21:30,000 INFO L93 Difference]: Finished difference Result 270 states and 363 transitions. [2021-11-19 13:21:30,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:21:30,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2021-11-19 13:21:30,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:21:30,007 INFO L225 Difference]: With dead ends: 270 [2021-11-19 13:21:30,007 INFO L226 Difference]: Without dead ends: 204 [2021-11-19 13:21:30,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 164 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 13:21:30,009 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 12 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:21:30,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 512 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:21:30,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-11-19 13:21:30,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2021-11-19 13:21:30,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 138 states have (on average 1.2318840579710144) internal successors, (170), 140 states have internal predecessors, (170), 51 states have call successors, (51), 11 states have call predecessors, (51), 12 states have return successors, (59), 50 states have call predecessors, (59), 50 states have call successors, (59) [2021-11-19 13:21:30,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 280 transitions. [2021-11-19 13:21:30,038 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 280 transitions. Word has length 84 [2021-11-19 13:21:30,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:21:30,039 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 280 transitions. [2021-11-19 13:21:30,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 13:21:30,039 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 280 transitions. [2021-11-19 13:21:30,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-19 13:21:30,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:30,042 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:21:30,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:21:30,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:21:30,265 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:21:30,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:30,266 INFO L85 PathProgramCache]: Analyzing trace with hash -134353604, now seen corresponding path program 1 times [2021-11-19 13:21:30,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:30,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969735865] [2021-11-19 13:21:30,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:30,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:30,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:30,269 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:30,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:21:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:31,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 1501 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 13:21:31,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 13:21:35,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:48,709 WARN L227 SmtUtils]: Spent 10.38s on a formula simplification. DAG size of input: 523 DAG size of output: 269 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 13:21:48,734 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-19 13:21:48,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 128 treesize of output 771 [2021-11-19 13:32:18,376 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-19 13:32:18,377 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:32:18,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969735865] [2021-11-19 13:32:18,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969735865] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:32:18,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1687341208] [2021-11-19 13:32:18,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:18,378 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:32:18,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:32:18,388 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:32:18,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-19 13:32:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:25,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 1501 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 13:32:25,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:32:25,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-19 13:32:27,445 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 13:32:27,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:32:30,214 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-19 13:32:30,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1687341208] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:32:30,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783573539] [2021-11-19 13:32:30,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:30,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:32:30,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:32:30,216 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:32:30,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-19 13:32:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:31,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 1501 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 13:32:31,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:32:31,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-19 13:32:33,631 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 13:32:33,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:32:36,270 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-19 13:32:36,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783573539] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:32:36,271 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:32:36,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 13, 10, 13, 10] total 20 [2021-11-19 13:32:36,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615073411] [2021-11-19 13:32:36,272 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:32:36,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 13:32:36,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:32:36,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 13:32:36,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:32:36,274 INFO L87 Difference]: Start difference. First operand 202 states and 280 transitions. Second operand has 20 states, 20 states have (on average 5.65) internal successors, (113), 20 states have internal predecessors, (113), 6 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 6 states have call predecessors, (22), 5 states have call successors, (22) [2021-11-19 13:32:38,391 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:32:40,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:32:42,412 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:32:44,424 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:32:46,433 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:32:48,441 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:32:50,451 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:33:07,417 WARN L227 SmtUtils]: Spent 14.21s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 13:33:19,738 WARN L227 SmtUtils]: Spent 12.17s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 13:33:39,956 WARN L227 SmtUtils]: Spent 14.23s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 13:33:43,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:43,029 INFO L93 Difference]: Finished difference Result 354 states and 509 transitions. [2021-11-19 13:33:43,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-19 13:33:43,030 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.65) internal successors, (113), 20 states have internal predecessors, (113), 6 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 6 states have call predecessors, (22), 5 states have call successors, (22) Word has length 100 [2021-11-19 13:33:43,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:43,035 INFO L225 Difference]: With dead ends: 354 [2021-11-19 13:33:43,035 INFO L226 Difference]: Without dead ends: 335 [2021-11-19 13:33:43,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 554 SyntacticMatches, 26 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 50.0s TimeCoverageRelationStatistics Valid=267, Invalid=1065, Unknown=0, NotChecked=0, Total=1332 [2021-11-19 13:33:43,038 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 199 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 24 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 176 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:43,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 1982 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 593 Invalid, 7 Unknown, 176 Unchecked, 22.4s Time] [2021-11-19 13:33:43,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-11-19 13:33:43,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 315. [2021-11-19 13:33:43,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 217 states have (on average 1.2304147465437787) internal successors, (267), 219 states have internal predecessors, (267), 81 states have call successors, (81), 14 states have call predecessors, (81), 16 states have return successors, (110), 81 states have call predecessors, (110), 80 states have call successors, (110) [2021-11-19 13:33:43,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 458 transitions. [2021-11-19 13:33:43,116 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 458 transitions. Word has length 100 [2021-11-19 13:33:43,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:43,117 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 458 transitions. [2021-11-19 13:33:43,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.65) internal successors, (113), 20 states have internal predecessors, (113), 6 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 6 states have call predecessors, (22), 5 states have call successors, (22) [2021-11-19 13:33:43,118 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 458 transitions. [2021-11-19 13:33:43,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-19 13:33:43,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:43,121 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:43,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:33:43,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-11-19 13:33:43,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:33:43,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:33:43,739 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:33:43,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:43,739 INFO L85 PathProgramCache]: Analyzing trace with hash 123811834, now seen corresponding path program 1 times [2021-11-19 13:33:43,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:33:43,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123824202] [2021-11-19 13:33:43,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:43,741 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:33:43,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:33:43,742 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:33:43,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe82b7-0cdb-4f34-afeb-d7035b4b6ed3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:33:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:44,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 13:33:44,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:48,077 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 32 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 13:33:48,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:50,753 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-19 13:33:50,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 131 treesize of output 1 [2021-11-19 13:34:02,453 WARN L227 SmtUtils]: Spent 11.12s on a formula simplification. DAG size of input: 526 DAG size of output: 272 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 13:34:02,455 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-19 13:34:02,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 132 treesize of output 771