./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_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_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/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_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/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_a6432e06-df02-4186-9823-a51036dbecda/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 b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:08:02,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:08:02,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:08:02,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:08:02,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:08:02,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:08:02,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:08:02,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:08:02,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:08:02,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:08:02,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:08:02,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:08:02,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:08:02,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:08:02,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:08:02,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:08:02,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:08:02,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:08:02,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:08:02,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:08:02,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:08:02,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:08:02,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:08:02,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:08:02,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:08:02,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:08:02,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:08:02,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:08:02,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:08:02,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:08:02,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:08:02,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:08:02,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:08:02,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:08:02,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:08:02,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:08:02,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:08:02,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:08:02,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:08:02,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:08:02,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:08:02,380 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 15:08:02,435 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:08:02,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:08:02,437 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:08:02,437 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:08:02,438 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:08:02,438 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:08:02,438 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:08:02,438 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:08:02,446 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:08:02,447 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:08:02,448 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:08:02,448 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:08:02,448 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:08:02,449 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:08:02,449 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:08:02,449 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:08:02,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:08:02,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:08:02,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:08:02,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:08:02,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:08:02,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:08:02,452 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:08:02,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:08:02,452 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:08:02,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:08:02,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:08:02,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:08:02,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:08:02,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:08:02,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:08:02,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:08:02,456 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:08:02,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:08:02,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:08:02,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:08:02,457 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:08:02,458 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_a6432e06-df02-4186-9823-a51036dbecda/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 [2021-11-19 15:08:02,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:08:02,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:08:02,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:08:02,857 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:08:02,858 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:08:02,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-11-19 15:08:02,948 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/data/d429a4792/710196241bf14441aeb405f4b0db9ece/FLAG197b27208 [2021-11-19 15:08:04,001 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:08:04,002 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-11-19 15:08:04,064 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/data/d429a4792/710196241bf14441aeb405f4b0db9ece/FLAG197b27208 [2021-11-19 15:08:04,381 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/data/d429a4792/710196241bf14441aeb405f4b0db9ece [2021-11-19 15:08:04,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:08:04,386 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:08:04,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:08:04,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:08:04,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:08:04,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:08:04" (1/1) ... [2021-11-19 15:08:04,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bf7ea3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:04, skipping insertion in model container [2021-11-19 15:08:04,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:08:04" (1/1) ... [2021-11-19 15:08:04,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:08:04,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:08:04,980 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_a6432e06-df02-4186-9823-a51036dbecda/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2021-11-19 15:08:04,990 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_a6432e06-df02-4186-9823-a51036dbecda/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2021-11-19 15:08:05,026 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:08:05,035 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:08:06,513 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:06,514 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:06,515 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:06,516 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:06,518 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:06,536 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:06,537 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:06,539 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:06,540 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:06,543 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:06,545 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:06,546 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:06,547 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:07,149 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:08:07,150 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:08:07,152 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:08:07,154 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:08:07,156 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:08:07,157 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:08:07,158 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:08:07,159 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:08:07,161 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:08:07,162 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:08:07,518 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:08:07,961 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:07,962 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:08,005 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:08,007 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:08,019 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:08,020 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:08,052 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:08,055 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:08,056 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:08,056 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:08,057 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:08,059 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:08,059 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:08,132 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:08:08,199 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 15:08:08,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@72750a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:08, skipping insertion in model container [2021-11-19 15:08:08,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:08:08,200 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:08:08,203 INFO L158 Benchmark]: Toolchain (without parser) took 3815.24ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 62.5MB in the beginning and 70.2MB in the end (delta: -7.7MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. [2021-11-19 15:08:08,204 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 104.9MB. Free memory is still 60.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:08:08,206 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3811.82ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 62.3MB in the beginning and 70.2MB in the end (delta: -8.0MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. [2021-11-19 15:08:08,208 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 104.9MB. Free memory is still 60.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3811.82ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 62.3MB in the beginning and 70.2MB in the end (delta: -8.0MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7051]: 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_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/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_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/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_a6432e06-df02-4186-9823-a51036dbecda/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 b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:08:10,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:08:10,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:08:10,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:08:10,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:08:10,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:08:10,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:08:10,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:08:10,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:08:10,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:08:10,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:08:10,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:08:10,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:08:10,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:08:10,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:08:10,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:08:10,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:08:10,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:08:10,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:08:10,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:08:10,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:08:10,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:08:10,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:08:10,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:08:10,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:08:10,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:08:10,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:08:10,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:08:10,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:08:10,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:08:10,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:08:10,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:08:10,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:08:10,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:08:10,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:08:10,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:08:10,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:08:11,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:08:11,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:08:11,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:08:11,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:08:11,021 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 15:08:11,053 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:08:11,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:08:11,054 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:08:11,055 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:08:11,055 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:08:11,055 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:08:11,055 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:08:11,056 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:08:11,056 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:08:11,056 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:08:11,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:08:11,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:08:11,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:08:11,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:08:11,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:08:11,059 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:08:11,059 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:08:11,059 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:08:11,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:08:11,060 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:08:11,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:08:11,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:08:11,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:08:11,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:08:11,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:08:11,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:08:11,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:08:11,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:08:11,062 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:08:11,062 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:08:11,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:08:11,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:08:11,063 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:08:11,063 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_a6432e06-df02-4186-9823-a51036dbecda/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 [2021-11-19 15:08:11,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:08:11,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:08:11,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:08:11,558 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:08:11,559 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:08:11,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-11-19 15:08:11,641 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/data/ea652fd12/7fb054b0de444d08973c1dc508278eb3/FLAGbe8130c6f [2021-11-19 15:08:12,606 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:08:12,607 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-11-19 15:08:12,667 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/data/ea652fd12/7fb054b0de444d08973c1dc508278eb3/FLAGbe8130c6f [2021-11-19 15:08:13,075 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/data/ea652fd12/7fb054b0de444d08973c1dc508278eb3 [2021-11-19 15:08:13,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:08:13,079 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:08:13,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:08:13,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:08:13,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:08:13,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:08:13" (1/1) ... [2021-11-19 15:08:13,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a2ef2fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:13, skipping insertion in model container [2021-11-19 15:08:13,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:08:13" (1/1) ... [2021-11-19 15:08:13,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:08:13,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:08:13,518 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_a6432e06-df02-4186-9823-a51036dbecda/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2021-11-19 15:08:13,527 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_a6432e06-df02-4186-9823-a51036dbecda/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2021-11-19 15:08:13,561 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:08:13,569 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:08:14,929 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:14,939 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:14,941 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:14,943 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:14,945 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:14,996 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:14,997 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:14,999 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:15,000 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:15,003 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:15,004 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:15,005 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:15,006 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:15,633 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:08:15,635 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:08:15,637 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:08:15,639 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:08:15,641 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:08:15,642 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:08:15,643 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:08:15,644 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:08:15,645 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:08:15,646 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:08:15,951 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:08:16,484 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,485 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,514 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,515 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,523 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,524 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,552 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,554 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,555 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,555 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,556 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,556 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,557 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,639 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:08:16,711 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:08:16,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:08:16,851 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_a6432e06-df02-4186-9823-a51036dbecda/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2021-11-19 15:08:16,852 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_a6432e06-df02-4186-9823-a51036dbecda/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2021-11-19 15:08:16,854 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:08:16,855 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:08:16,924 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,929 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,929 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,930 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,931 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,943 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,945 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,946 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,947 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,948 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,949 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,950 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:16,950 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,006 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:08:17,014 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:08:17,015 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:08:17,018 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:08:17,019 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:08:17,020 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:08:17,024 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:08:17,025 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:08:17,026 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:08:17,027 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:08:17,080 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:08:17,301 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,318 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,344 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,346 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,351 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,351 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,384 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,385 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,386 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,387 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,387 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,388 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,388 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,454 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:08:17,487 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:08:17,504 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_a6432e06-df02-4186-9823-a51036dbecda/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2021-11-19 15:08:17,505 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_a6432e06-df02-4186-9823-a51036dbecda/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2021-11-19 15:08:17,507 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:08:17,508 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:08:17,609 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,610 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,611 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,612 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,613 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,623 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,624 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,625 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,625 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,628 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,629 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,630 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,630 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,670 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:08:17,673 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:08:17,674 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:08:17,675 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:08:17,676 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:08:17,676 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:08:17,677 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:08:17,678 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:08:17,678 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:08:17,680 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:08:17,708 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:08:17,841 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,842 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,857 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,858 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,864 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,865 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,878 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,879 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,879 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,880 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,880 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,881 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,881 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:08:17,943 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:08:18,454 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:08:18,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:18 WrapperNode [2021-11-19 15:08:18,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:08:18,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:08:18,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:08:18,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:08:18,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:18" (1/1) ... [2021-11-19 15:08:18,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:18" (1/1) ... [2021-11-19 15:08:18,790 INFO L137 Inliner]: procedures = 796, calls = 2457, calls flagged for inlining = 71, calls inlined = 19, statements flattened = 821 [2021-11-19 15:08:18,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:08:18,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:08:18,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:08:18,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:08:18,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:18" (1/1) ... [2021-11-19 15:08:18,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:18" (1/1) ... [2021-11-19 15:08:18,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:18" (1/1) ... [2021-11-19 15:08:18,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:18" (1/1) ... [2021-11-19 15:08:18,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:18" (1/1) ... [2021-11-19 15:08:18,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:18" (1/1) ... [2021-11-19 15:08:18,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:18" (1/1) ... [2021-11-19 15:08:18,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:08:18,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:08:18,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:08:18,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:08:18,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:18" (1/1) ... [2021-11-19 15:08:18,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:08:19,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:08:19,027 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:08:19,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:08:19,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-19 15:08:19,089 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-19 15:08:19,090 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-19 15:08:19,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 15:08:19,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 15:08:19,090 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-19 15:08:19,091 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-19 15:08:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:08:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:08:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 15:08:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:08:19,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:08:19,092 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 15:08:19,092 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 15:08:19,092 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-19 15:08:19,092 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-19 15:08:19,093 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-19 15:08:19,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:08:19,093 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-19 15:08:19,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-19 15:08:19,093 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-19 15:08:19,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 15:08:19,094 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 15:08:19,094 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 15:08:19,094 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_find [2021-11-19 15:08:19,094 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_find [2021-11-19 15:08:19,095 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2021-11-19 15:08:19,095 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2021-11-19 15:08:19,095 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-19 15:08:19,095 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-19 15:08:19,095 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2021-11-19 15:08:19,096 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2021-11-19 15:08:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2021-11-19 15:08:19,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2021-11-19 15:08:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:08:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:08:19,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 15:08:19,097 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-19 15:08:19,097 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-19 15:08:19,097 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2021-11-19 15:08:19,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2021-11-19 15:08:19,098 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2021-11-19 15:08:19,098 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2021-11-19 15:08:19,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 15:08:19,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 15:08:19,098 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2021-11-19 15:08:19,099 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2021-11-19 15:08:19,099 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 15:08:19,099 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 15:08:19,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 15:08:19,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 15:08:19,100 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-19 15:08:19,100 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-19 15:08:19,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 15:08:19,100 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-19 15:08:19,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-19 15:08:19,101 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-19 15:08:19,101 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-19 15:08:19,101 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2021-11-19 15:08:19,101 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2021-11-19 15:08:19,519 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:08:19,521 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:08:19,726 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2021-11-19 15:08:19,918 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-11-19 15:08:20,786 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !true; [2021-11-19 15:08:24,514 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:08:24,539 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:08:24,539 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-19 15:08:24,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:08:24 BoogieIcfgContainer [2021-11-19 15:08:24,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:08:24,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:08:24,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:08:24,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:08:24,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:08:13" (1/3) ... [2021-11-19 15:08:24,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ae9f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:08:24, skipping insertion in model container [2021-11-19 15:08:24,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:18" (2/3) ... [2021-11-19 15:08:24,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ae9f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:08:24, skipping insertion in model container [2021-11-19 15:08:24,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:08:24" (3/3) ... [2021-11-19 15:08:24,556 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_find_harness.i [2021-11-19 15:08:24,563 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:08:24,563 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:08:24,654 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:08:24,661 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 15:08:24,662 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:08:24,690 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 146 states have (on average 1.2191780821917808) internal successors, (178), 144 states have internal predecessors, (178), 65 states have call successors, (65), 21 states have call predecessors, (65), 21 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2021-11-19 15:08:24,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-19 15:08:24,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:08:24,711 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:08:24,712 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:08:24,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:08:24,719 INFO L85 PathProgramCache]: Analyzing trace with hash -501442740, now seen corresponding path program 1 times [2021-11-19 15:08:24,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:08:24,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126136387] [2021-11-19 15:08:24,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:08:24,743 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:08:24,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:08:24,747 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:08:24,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:08:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:08:25,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 1508 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 15:08:25,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:08:26,580 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-19 15:08:26,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:08:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2021-11-19 15:08:27,186 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:08:27,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126136387] [2021-11-19 15:08:27,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126136387] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:08:27,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:08:27,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-19 15:08:27,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127909687] [2021-11-19 15:08:27,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:08:27,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 15:08:27,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:08:27,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 15:08:27,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:08:27,260 INFO L87 Difference]: Start difference. First operand has 231 states, 146 states have (on average 1.2191780821917808) internal successors, (178), 144 states have internal predecessors, (178), 65 states have call successors, (65), 21 states have call predecessors, (65), 21 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-19 15:08:27,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:08:27,384 INFO L93 Difference]: Finished difference Result 456 states and 647 transitions. [2021-11-19 15:08:27,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 15:08:27,391 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 178 [2021-11-19 15:08:27,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:08:27,417 INFO L225 Difference]: With dead ends: 456 [2021-11-19 15:08:27,418 INFO L226 Difference]: Without dead ends: 224 [2021-11-19 15:08:27,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:08:27,440 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:08:27,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:08:27,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-11-19 15:08:27,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2021-11-19 15:08:27,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 137 states have (on average 1.2043795620437956) internal successors, (165), 138 states have internal predecessors, (165), 65 states have call successors, (65), 21 states have call predecessors, (65), 21 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-19 15:08:27,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 294 transitions. [2021-11-19 15:08:27,576 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 294 transitions. Word has length 178 [2021-11-19 15:08:27,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:08:27,578 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 294 transitions. [2021-11-19 15:08:27,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-19 15:08:27,579 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 294 transitions. [2021-11-19 15:08:27,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-19 15:08:27,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:08:27,586 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:08:27,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:08:27,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:08:27,809 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:08:27,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:08:27,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1965212336, now seen corresponding path program 1 times [2021-11-19 15:08:27,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:08:27,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180598618] [2021-11-19 15:08:27,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:08:27,815 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:08:27,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:08:27,816 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:08:27,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:08:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:08:28,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 1508 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:08:28,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:08:29,618 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-11-19 15:08:29,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:08:30,309 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-19 15:08:30,310 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:08:30,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180598618] [2021-11-19 15:08:30,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180598618] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:08:30,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:08:30,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 15:08:30,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454108880] [2021-11-19 15:08:30,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:08:30,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:08:30,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:08:30,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:08:30,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:08:30,320 INFO L87 Difference]: Start difference. First operand 224 states and 294 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-19 15:08:30,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:08:30,460 INFO L93 Difference]: Finished difference Result 443 states and 581 transitions. [2021-11-19 15:08:30,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:08:30,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 178 [2021-11-19 15:08:30,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:08:30,466 INFO L225 Difference]: With dead ends: 443 [2021-11-19 15:08:30,466 INFO L226 Difference]: Without dead ends: 228 [2021-11-19 15:08:30,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:08:30,469 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 2 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:08:30,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1164 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:08:30,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-19 15:08:30,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-11-19 15:08:30,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 140 states have (on average 1.2) internal successors, (168), 141 states have internal predecessors, (168), 65 states have call successors, (65), 21 states have call predecessors, (65), 22 states have return successors, (65), 65 states have call predecessors, (65), 64 states have call successors, (65) [2021-11-19 15:08:30,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 298 transitions. [2021-11-19 15:08:30,510 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 298 transitions. Word has length 178 [2021-11-19 15:08:30,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:08:30,511 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 298 transitions. [2021-11-19 15:08:30,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-19 15:08:30,512 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 298 transitions. [2021-11-19 15:08:30,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-19 15:08:30,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:08:30,518 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:08:30,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:08:30,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:08:30,742 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:08:30,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:08:30,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1472595880, now seen corresponding path program 1 times [2021-11-19 15:08:30,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:08:30,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979020324] [2021-11-19 15:08:30,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:08:30,746 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:08:30,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:08:30,758 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:08:30,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:08:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:08:31,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 1522 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:08:31,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:08:32,538 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2021-11-19 15:08:32,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:08:33,283 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2021-11-19 15:08:33,283 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:08:33,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979020324] [2021-11-19 15:08:33,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979020324] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:08:33,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:08:33,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-19 15:08:33,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162544823] [2021-11-19 15:08:33,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:08:33,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:08:33,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:08:33,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:08:33,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:08:33,287 INFO L87 Difference]: Start difference. First operand 228 states and 298 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-19 15:08:33,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:08:33,691 INFO L93 Difference]: Finished difference Result 449 states and 585 transitions. [2021-11-19 15:08:33,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:08:33,692 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 190 [2021-11-19 15:08:33,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:08:33,698 INFO L225 Difference]: With dead ends: 449 [2021-11-19 15:08:33,698 INFO L226 Difference]: Without dead ends: 230 [2021-11-19 15:08:33,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:08:33,701 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 2 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:08:33,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1323 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:08:33,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-11-19 15:08:33,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2021-11-19 15:08:33,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 141 states have (on average 1.198581560283688) internal successors, (169), 143 states have internal predecessors, (169), 65 states have call successors, (65), 21 states have call predecessors, (65), 23 states have return successors, (66), 65 states have call predecessors, (66), 64 states have call successors, (66) [2021-11-19 15:08:33,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 300 transitions. [2021-11-19 15:08:33,739 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 300 transitions. Word has length 190 [2021-11-19 15:08:33,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:08:33,740 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 300 transitions. [2021-11-19 15:08:33,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-19 15:08:33,741 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 300 transitions. [2021-11-19 15:08:33,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-19 15:08:33,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:08:33,754 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:08:33,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:08:33,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:08:33,970 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:08:33,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:08:33,970 INFO L85 PathProgramCache]: Analyzing trace with hash 10564960, now seen corresponding path program 1 times [2021-11-19 15:08:33,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:08:33,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960868423] [2021-11-19 15:08:33,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:08:33,974 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:08:33,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:08:33,975 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:08:33,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:08:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:08:35,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:08:35,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:08:35,772 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-11-19 15:08:35,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:08:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-11-19 15:08:36,592 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:08:36,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960868423] [2021-11-19 15:08:36,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960868423] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:08:36,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:08:36,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 15:08:36,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940916996] [2021-11-19 15:08:36,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:08:36,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:08:36,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:08:36,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:08:36,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:08:36,598 INFO L87 Difference]: Start difference. First operand 230 states and 300 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-19 15:08:36,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:08:36,811 INFO L93 Difference]: Finished difference Result 447 states and 585 transitions. [2021-11-19 15:08:36,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:08:36,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 195 [2021-11-19 15:08:36,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:08:36,819 INFO L225 Difference]: With dead ends: 447 [2021-11-19 15:08:36,819 INFO L226 Difference]: Without dead ends: 237 [2021-11-19 15:08:36,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 385 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 15:08:36,825 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 36 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:08:36,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 799 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:08:36,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-19 15:08:36,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2021-11-19 15:08:36,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 146 states have (on average 1.1986301369863013) internal successors, (175), 149 states have internal predecessors, (175), 66 states have call successors, (66), 21 states have call predecessors, (66), 24 states have return successors, (69), 66 states have call predecessors, (69), 65 states have call successors, (69) [2021-11-19 15:08:36,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 310 transitions. [2021-11-19 15:08:36,878 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 310 transitions. Word has length 195 [2021-11-19 15:08:36,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:08:36,880 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 310 transitions. [2021-11-19 15:08:36,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-19 15:08:36,880 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 310 transitions. [2021-11-19 15:08:36,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-19 15:08:36,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:08:36,885 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:08:36,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:08:37,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:08:37,110 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:08:37,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:08:37,110 INFO L85 PathProgramCache]: Analyzing trace with hash 11341472, now seen corresponding path program 1 times [2021-11-19 15:08:37,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:08:37,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111194222] [2021-11-19 15:08:37,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:08:37,113 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:08:37,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:08:37,114 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:08:37,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:08:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:08:38,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 1575 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 15:08:38,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:08:38,815 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 16 treesize of output 12 [2021-11-19 15:08:40,096 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-11-19 15:08:40,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:08:40,987 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 30 treesize of output 26 [2021-11-19 15:08:41,374 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-11-19 15:08:41,374 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:08:41,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111194222] [2021-11-19 15:08:41,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111194222] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:08:41,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:08:41,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 15 [2021-11-19 15:08:41,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34526248] [2021-11-19 15:08:41,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:08:41,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 15:08:41,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:08:41,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 15:08:41,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:08:41,378 INFO L87 Difference]: Start difference. First operand 237 states and 310 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-19 15:08:43,489 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:08:44,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:08:44,889 INFO L93 Difference]: Finished difference Result 466 states and 606 transitions. [2021-11-19 15:08:44,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 15:08:44,890 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 195 [2021-11-19 15:08:44,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:08:44,894 INFO L225 Difference]: With dead ends: 466 [2021-11-19 15:08:44,894 INFO L226 Difference]: Without dead ends: 241 [2021-11-19 15:08:44,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-19 15:08:44,897 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 38 mSDsluCounter, 2004 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 148 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:08:44,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 2293 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 93 Invalid, 1 Unknown, 148 Unchecked, 3.4s Time] [2021-11-19 15:08:44,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-19 15:08:44,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2021-11-19 15:08:44,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 150 states have (on average 1.1933333333333334) internal successors, (179), 152 states have internal predecessors, (179), 66 states have call successors, (66), 22 states have call predecessors, (66), 24 states have return successors, (69), 66 states have call predecessors, (69), 65 states have call successors, (69) [2021-11-19 15:08:44,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 314 transitions. [2021-11-19 15:08:44,921 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 314 transitions. Word has length 195 [2021-11-19 15:08:44,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:08:44,922 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 314 transitions. [2021-11-19 15:08:44,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-19 15:08:44,923 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 314 transitions. [2021-11-19 15:08:44,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-19 15:08:44,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:08:44,926 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:08:44,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:08:45,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:08:45,140 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:08:45,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:08:45,141 INFO L85 PathProgramCache]: Analyzing trace with hash -145875486, now seen corresponding path program 1 times [2021-11-19 15:08:45,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:08:45,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996399805] [2021-11-19 15:08:45,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:08:45,143 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:08:45,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:08:45,144 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:08:45,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:08:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:08:46,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 1589 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 15:08:46,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:08:46,703 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 16 treesize of output 12 [2021-11-19 15:08:48,043 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-11-19 15:08:48,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:08:49,366 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 30 treesize of output 26 [2021-11-19 15:08:49,733 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2021-11-19 15:08:49,734 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:08:49,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996399805] [2021-11-19 15:08:49,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996399805] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:08:49,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:08:49,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 17 [2021-11-19 15:08:49,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008855734] [2021-11-19 15:08:49,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:08:49,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 15:08:49,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:08:49,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 15:08:49,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:08:49,737 INFO L87 Difference]: Start difference. First operand 241 states and 314 transitions. Second operand has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) [2021-11-19 15:08:51,891 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 15:08:53,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:08:53,373 INFO L93 Difference]: Finished difference Result 467 states and 607 transitions. [2021-11-19 15:08:53,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 15:08:53,374 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) Word has length 201 [2021-11-19 15:08:53,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:08:53,377 INFO L225 Difference]: With dead ends: 467 [2021-11-19 15:08:53,378 INFO L226 Difference]: Without dead ends: 244 [2021-11-19 15:08:53,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-11-19 15:08:53,381 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 36 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 220 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:08:53,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 2299 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 92 Invalid, 1 Unknown, 220 Unchecked, 3.5s Time] [2021-11-19 15:08:53,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-19 15:08:53,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-11-19 15:08:53,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 152 states have (on average 1.1907894736842106) internal successors, (181), 154 states have internal predecessors, (181), 67 states have call successors, (67), 23 states have call predecessors, (67), 24 states have return successors, (70), 66 states have call predecessors, (70), 66 states have call successors, (70) [2021-11-19 15:08:53,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 318 transitions. [2021-11-19 15:08:53,404 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 318 transitions. Word has length 201 [2021-11-19 15:08:53,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:08:53,405 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 318 transitions. [2021-11-19 15:08:53,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) [2021-11-19 15:08:53,406 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 318 transitions. [2021-11-19 15:08:53,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-19 15:08:53,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:08:53,409 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:08:53,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:08:53,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:08:53,634 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:08:53,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:08:53,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1621013711, now seen corresponding path program 1 times [2021-11-19 15:08:53,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:08:53,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220947112] [2021-11-19 15:08:53,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:08:53,637 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:08:53,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:08:53,638 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:08:53,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 15:08:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:08:54,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 1606 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:08:54,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:08:55,454 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-19 15:08:55,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:08:56,197 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 26 proven. 15 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2021-11-19 15:08:56,197 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:08:56,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [220947112] [2021-11-19 15:08:56,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [220947112] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:08:56,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:08:56,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-19 15:08:56,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419522066] [2021-11-19 15:08:56,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:08:56,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:08:56,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:08:56,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:08:56,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:08:56,203 INFO L87 Difference]: Start difference. First operand 244 states and 318 transitions. Second operand has 6 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-19 15:08:56,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:08:56,617 INFO L93 Difference]: Finished difference Result 406 states and 536 transitions. [2021-11-19 15:08:56,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:08:56,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 206 [2021-11-19 15:08:56,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:08:56,622 INFO L225 Difference]: With dead ends: 406 [2021-11-19 15:08:56,622 INFO L226 Difference]: Without dead ends: 242 [2021-11-19 15:08:56,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:08:56,624 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 2 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:08:56,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1323 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:08:56,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-19 15:08:56,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 238. [2021-11-19 15:08:56,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 148 states have (on average 1.1824324324324325) internal successors, (175), 149 states have internal predecessors, (175), 67 states have call successors, (67), 23 states have call predecessors, (67), 22 states have return successors, (68), 65 states have call predecessors, (68), 66 states have call successors, (68) [2021-11-19 15:08:56,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 310 transitions. [2021-11-19 15:08:56,646 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 310 transitions. Word has length 206 [2021-11-19 15:08:56,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:08:56,647 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 310 transitions. [2021-11-19 15:08:56,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-19 15:08:56,648 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 310 transitions. [2021-11-19 15:08:56,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-19 15:08:56,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:08:56,651 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:08:56,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:08:56,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:08:56,874 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:08:56,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:08:56,875 INFO L85 PathProgramCache]: Analyzing trace with hash 500291049, now seen corresponding path program 1 times [2021-11-19 15:08:56,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:08:56,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166765236] [2021-11-19 15:08:56,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:08:56,878 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:08:56,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:08:56,879 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:08:56,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:08:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:08:58,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:08:58,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:08:58,901 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-11-19 15:08:58,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:08:59,538 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 30 proven. 15 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2021-11-19 15:08:59,539 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:08:59,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166765236] [2021-11-19 15:08:59,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166765236] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:08:59,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:08:59,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2021-11-19 15:08:59,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455064943] [2021-11-19 15:08:59,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:08:59,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:08:59,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:08:59,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:08:59,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:08:59,543 INFO L87 Difference]: Start difference. First operand 238 states and 310 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-19 15:08:59,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:08:59,936 INFO L93 Difference]: Finished difference Result 397 states and 525 transitions. [2021-11-19 15:08:59,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:08:59,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 211 [2021-11-19 15:08:59,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:08:59,940 INFO L225 Difference]: With dead ends: 397 [2021-11-19 15:08:59,941 INFO L226 Difference]: Without dead ends: 244 [2021-11-19 15:08:59,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:08:59,943 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 2 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:08:59,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1587 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:08:59,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-19 15:08:59,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 241. [2021-11-19 15:08:59,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 150 states have (on average 1.18) internal successors, (177), 152 states have internal predecessors, (177), 67 states have call successors, (67), 23 states have call predecessors, (67), 23 states have return successors, (71), 65 states have call predecessors, (71), 66 states have call successors, (71) [2021-11-19 15:08:59,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 315 transitions. [2021-11-19 15:08:59,966 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 315 transitions. Word has length 211 [2021-11-19 15:08:59,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:08:59,967 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 315 transitions. [2021-11-19 15:08:59,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-19 15:08:59,967 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 315 transitions. [2021-11-19 15:08:59,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-19 15:08:59,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:08:59,970 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:09:00,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:09:00,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:09:00,185 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:09:00,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:09:00,186 INFO L85 PathProgramCache]: Analyzing trace with hash 2127170151, now seen corresponding path program 2 times [2021-11-19 15:09:00,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:09:00,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612318911] [2021-11-19 15:09:00,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:09:00,190 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:09:00,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:09:00,192 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:09:00,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 15:09:00,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 15:09:00,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:09:00,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 15:09:00,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:09:01,309 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2021-11-19 15:09:01,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:09:01,807 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2021-11-19 15:09:01,808 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:09:01,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612318911] [2021-11-19 15:09:01,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612318911] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:09:01,808 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:09:01,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-19 15:09:01,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276725093] [2021-11-19 15:09:01,809 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:09:01,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:09:01,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:09:01,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:09:01,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:09:01,811 INFO L87 Difference]: Start difference. First operand 241 states and 315 transitions. Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2021-11-19 15:09:01,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:09:01,928 INFO L93 Difference]: Finished difference Result 249 states and 322 transitions. [2021-11-19 15:09:01,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:09:01,929 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 217 [2021-11-19 15:09:01,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:09:01,932 INFO L225 Difference]: With dead ends: 249 [2021-11-19 15:09:01,933 INFO L226 Difference]: Without dead ends: 247 [2021-11-19 15:09:01,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:09:01,934 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 13 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:09:01,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 1713 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:09:01,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-19 15:09:01,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 245. [2021-11-19 15:09:01,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 153 states have (on average 1.1764705882352942) internal successors, (180), 155 states have internal predecessors, (180), 67 states have call successors, (67), 24 states have call predecessors, (67), 24 states have return successors, (71), 65 states have call predecessors, (71), 66 states have call successors, (71) [2021-11-19 15:09:01,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 318 transitions. [2021-11-19 15:09:01,956 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 318 transitions. Word has length 217 [2021-11-19 15:09:01,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:09:01,958 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 318 transitions. [2021-11-19 15:09:01,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2021-11-19 15:09:01,958 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 318 transitions. [2021-11-19 15:09:01,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-19 15:09:01,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:09:01,961 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:09:01,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 15:09:02,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:09:02,169 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:09:02,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:09:02,170 INFO L85 PathProgramCache]: Analyzing trace with hash 533171121, now seen corresponding path program 1 times [2021-11-19 15:09:02,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:09:02,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391333843] [2021-11-19 15:09:02,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:09:02,176 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:09:02,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:09:02,177 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:09:02,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 15:09:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:09:03,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 1688 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 15:09:03,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:09:05,295 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-11-19 15:09:05,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:09:06,479 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2021-11-19 15:09:06,480 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:09:06,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391333843] [2021-11-19 15:09:06,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391333843] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:09:06,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:09:06,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2021-11-19 15:09:06,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308945341] [2021-11-19 15:09:06,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:09:06,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:09:06,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:09:06,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:09:06,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:09:06,484 INFO L87 Difference]: Start difference. First operand 245 states and 318 transitions. Second operand has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-19 15:09:08,626 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:09:10,633 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 15:09:11,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:09:11,973 INFO L93 Difference]: Finished difference Result 409 states and 541 transitions. [2021-11-19 15:09:11,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 15:09:11,976 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) Word has length 230 [2021-11-19 15:09:11,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:09:11,979 INFO L225 Difference]: With dead ends: 409 [2021-11-19 15:09:11,979 INFO L226 Difference]: Without dead ends: 247 [2021-11-19 15:09:11,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:09:11,981 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 7 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:09:11,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1836 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 2 Unknown, 119 Unchecked, 5.2s Time] [2021-11-19 15:09:11,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-19 15:09:11,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 244. [2021-11-19 15:09:11,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 153 states have (on average 1.1764705882352942) internal successors, (180), 154 states have internal predecessors, (180), 66 states have call successors, (66), 24 states have call predecessors, (66), 24 states have return successors, (70), 65 states have call predecessors, (70), 65 states have call successors, (70) [2021-11-19 15:09:11,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 316 transitions. [2021-11-19 15:09:11,998 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 316 transitions. Word has length 230 [2021-11-19 15:09:11,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:09:11,999 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 316 transitions. [2021-11-19 15:09:11,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-19 15:09:11,999 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 316 transitions. [2021-11-19 15:09:12,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-19 15:09:12,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:09:12,002 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:09:12,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:09:12,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:09:12,225 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:09:12,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:09:12,226 INFO L85 PathProgramCache]: Analyzing trace with hash 925847752, now seen corresponding path program 2 times [2021-11-19 15:09:12,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:09:12,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907489810] [2021-11-19 15:09:12,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:09:12,229 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:09:12,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:09:12,230 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:09:12,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 15:09:16,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:09:16,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:09:16,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 1705 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 15:09:16,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:09:16,640 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-11-19 15:09:16,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:09:17,291 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2021-11-19 15:09:17,291 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:09:17,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907489810] [2021-11-19 15:09:17,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907489810] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:09:17,292 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:09:17,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-19 15:09:17,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136237080] [2021-11-19 15:09:17,292 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:09:17,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:09:17,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:09:17,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:09:17,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:09:17,294 INFO L87 Difference]: Start difference. First operand 244 states and 316 transitions. Second operand has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (38), 3 states have call predecessors, (38), 4 states have call successors, (38) [2021-11-19 15:09:17,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:09:17,519 INFO L93 Difference]: Finished difference Result 400 states and 520 transitions. [2021-11-19 15:09:17,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:09:17,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (38), 3 states have call predecessors, (38), 4 states have call successors, (38) Word has length 235 [2021-11-19 15:09:17,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:09:17,524 INFO L225 Difference]: With dead ends: 400 [2021-11-19 15:09:17,524 INFO L226 Difference]: Without dead ends: 237 [2021-11-19 15:09:17,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:09:17,526 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 41 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:09:17,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 1357 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:09:17,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-19 15:09:17,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2021-11-19 15:09:17,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 148 states have (on average 1.1689189189189189) internal successors, (173), 148 states have internal predecessors, (173), 65 states have call successors, (65), 24 states have call predecessors, (65), 23 states have return successors, (67), 64 states have call predecessors, (67), 64 states have call successors, (67) [2021-11-19 15:09:17,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 305 transitions. [2021-11-19 15:09:17,541 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 305 transitions. Word has length 235 [2021-11-19 15:09:17,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:09:17,542 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 305 transitions. [2021-11-19 15:09:17,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (38), 3 states have call predecessors, (38), 4 states have call successors, (38) [2021-11-19 15:09:17,543 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 305 transitions. [2021-11-19 15:09:17,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-19 15:09:17,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:09:17,545 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:09:17,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 15:09:17,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:09:17,769 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:09:17,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:09:17,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1406928010, now seen corresponding path program 1 times [2021-11-19 15:09:17,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:09:17,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944694725] [2021-11-19 15:09:17,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:09:17,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:09:17,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:09:17,774 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:09:17,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 15:09:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:09:18,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 1708 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-19 15:09:18,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:09:21,342 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 243 proven. 3 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-11-19 15:09:21,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:09:22,526 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-19 15:09:22,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-11-19 15:09:22,538 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-19 15:09:22,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-11-19 15:09:22,852 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2021-11-19 15:09:22,852 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:09:22,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944694725] [2021-11-19 15:09:22,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944694725] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:09:22,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1365875078] [2021-11-19 15:09:22,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:09:22,853 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:09:22,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:09:22,855 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:09:22,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-19 15:09:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:09:23,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 1708 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:09:23,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:09:24,173 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-11-19 15:09:24,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:09:24,794 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 41 proven. 6 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2021-11-19 15:09:24,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1365875078] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:09:24,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:09:24,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14, 13, 7] total 26 [2021-11-19 15:09:24,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807974927] [2021-11-19 15:09:24,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:09:24,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:09:24,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:09:24,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:09:24,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2021-11-19 15:09:24,797 INFO L87 Difference]: Start difference. First operand 237 states and 305 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-19 15:09:25,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:09:25,167 INFO L93 Difference]: Finished difference Result 386 states and 499 transitions. [2021-11-19 15:09:25,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:09:25,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 235 [2021-11-19 15:09:25,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:09:25,171 INFO L225 Difference]: With dead ends: 386 [2021-11-19 15:09:25,171 INFO L226 Difference]: Without dead ends: 237 [2021-11-19 15:09:25,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 937 GetRequests, 906 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2021-11-19 15:09:25,173 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 2 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:09:25,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1582 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:09:25,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-19 15:09:25,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2021-11-19 15:09:25,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 148 states have (on average 1.1689189189189189) internal successors, (173), 148 states have internal predecessors, (173), 65 states have call successors, (65), 24 states have call predecessors, (65), 23 states have return successors, (66), 64 states have call predecessors, (66), 64 states have call successors, (66) [2021-11-19 15:09:25,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 304 transitions. [2021-11-19 15:09:25,195 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 304 transitions. Word has length 235 [2021-11-19 15:09:25,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:09:25,196 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 304 transitions. [2021-11-19 15:09:25,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-19 15:09:25,196 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 304 transitions. [2021-11-19 15:09:25,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-11-19 15:09:25,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:09:25,199 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:09:25,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 15:09:25,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-19 15:09:25,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:09:25,606 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:09:25,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:09:25,606 INFO L85 PathProgramCache]: Analyzing trace with hash 759558577, now seen corresponding path program 1 times [2021-11-19 15:09:25,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:09:25,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776729935] [2021-11-19 15:09:25,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:09:25,608 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:09:25,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:09:25,609 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:09:25,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 15:09:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:09:27,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-19 15:09:27,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:09:29,393 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 32 treesize of output 24 [2021-11-19 15:09:29,399 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 21 treesize of output 13 [2021-11-19 15:09:29,719 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 241 proven. 16 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-11-19 15:09:29,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:09:30,577 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-19 15:09:30,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-11-19 15:09:30,587 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-19 15:09:30,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-11-19 15:09:30,854 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-11-19 15:09:30,854 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:09:30,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776729935] [2021-11-19 15:09:30,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776729935] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:09:30,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [586975027] [2021-11-19 15:09:30,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:09:30,855 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:09:30,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:09:30,856 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:09:30,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-19 15:09:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:09:31,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:09:31,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:09:32,130 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2021-11-19 15:09:32,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:09:32,680 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2021-11-19 15:09:32,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [586975027] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:09:32,680 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:09:32,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [15, 14] total 23 [2021-11-19 15:09:32,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891365122] [2021-11-19 15:09:32,681 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:09:32,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:09:32,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:09:32,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:09:32,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2021-11-19 15:09:32,683 INFO L87 Difference]: Start difference. First operand 237 states and 304 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-19 15:09:33,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:09:33,048 INFO L93 Difference]: Finished difference Result 381 states and 492 transitions. [2021-11-19 15:09:33,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:09:33,049 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 246 [2021-11-19 15:09:33,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:09:33,052 INFO L225 Difference]: With dead ends: 381 [2021-11-19 15:09:33,052 INFO L226 Difference]: Without dead ends: 239 [2021-11-19 15:09:33,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 981 GetRequests, 948 SyntacticMatches, 11 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2021-11-19 15:09:33,054 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 2 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:09:33,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1565 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:09:33,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-19 15:09:33,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-11-19 15:09:33,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 149 states have (on average 1.167785234899329) internal successors, (174), 150 states have internal predecessors, (174), 65 states have call successors, (65), 24 states have call predecessors, (65), 24 states have return successors, (68), 64 states have call predecessors, (68), 64 states have call successors, (68) [2021-11-19 15:09:33,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 307 transitions. [2021-11-19 15:09:33,069 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 307 transitions. Word has length 246 [2021-11-19 15:09:33,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:09:33,070 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 307 transitions. [2021-11-19 15:09:33,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-19 15:09:33,070 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 307 transitions. [2021-11-19 15:09:33,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-19 15:09:33,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:09:33,072 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:09:33,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-19 15:09:33,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 15:09:33,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:09:33,478 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:09:33,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:09:33,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1235109588, now seen corresponding path program 1 times [2021-11-19 15:09:33,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:09:33,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162821290] [2021-11-19 15:09:33,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:09:33,480 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:09:33,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:09:33,481 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:09:33,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 15:09:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:09:35,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 1756 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:09:35,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:09:35,388 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-11-19 15:09:35,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:09:35,871 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-11-19 15:09:35,872 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:09:35,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162821290] [2021-11-19 15:09:35,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162821290] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:09:35,873 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:09:35,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 15:09:35,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053605645] [2021-11-19 15:09:35,873 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:09:35,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:09:35,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:09:35,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:09:35,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:09:35,875 INFO L87 Difference]: Start difference. First operand 239 states and 307 transitions. Second operand has 8 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2021-11-19 15:09:35,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:09:35,978 INFO L93 Difference]: Finished difference Result 251 states and 319 transitions. [2021-11-19 15:09:35,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:09:35,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 251 [2021-11-19 15:09:35,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:09:35,981 INFO L225 Difference]: With dead ends: 251 [2021-11-19 15:09:35,981 INFO L226 Difference]: Without dead ends: 249 [2021-11-19 15:09:35,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:09:35,982 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 13 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:09:35,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1155 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:09:35,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-11-19 15:09:35,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 243. [2021-11-19 15:09:35,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 152 states have (on average 1.1644736842105263) internal successors, (177), 153 states have internal predecessors, (177), 65 states have call successors, (65), 25 states have call predecessors, (65), 25 states have return successors, (68), 64 states have call predecessors, (68), 64 states have call successors, (68) [2021-11-19 15:09:35,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 310 transitions. [2021-11-19 15:09:35,997 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 310 transitions. Word has length 251 [2021-11-19 15:09:35,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:09:35,998 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 310 transitions. [2021-11-19 15:09:35,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2021-11-19 15:09:35,998 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 310 transitions. [2021-11-19 15:09:36,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-19 15:09:36,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:09:36,001 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:09:36,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 15:09:36,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:09:36,225 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:09:36,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:09:36,226 INFO L85 PathProgramCache]: Analyzing trace with hash -727178982, now seen corresponding path program 1 times [2021-11-19 15:09:36,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:09:36,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57559220] [2021-11-19 15:09:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:09:36,228 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:09:36,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:09:36,229 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:09:36,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 15:09:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:09:37,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:09:37,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:09:38,255 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-11-19 15:09:38,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:09:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2021-11-19 15:09:38,822 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:09:38,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57559220] [2021-11-19 15:09:38,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57559220] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:09:38,823 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:09:38,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 15:09:38,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389269291] [2021-11-19 15:09:38,823 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:09:38,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:09:38,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:09:38,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:09:38,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:09:38,825 INFO L87 Difference]: Start difference. First operand 243 states and 310 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-19 15:09:38,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:09:38,974 INFO L93 Difference]: Finished difference Result 322 states and 405 transitions. [2021-11-19 15:09:38,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:09:38,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 258 [2021-11-19 15:09:38,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:09:38,978 INFO L225 Difference]: With dead ends: 322 [2021-11-19 15:09:38,978 INFO L226 Difference]: Without dead ends: 243 [2021-11-19 15:09:38,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:09:38,979 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 61 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:09:38,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 567 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:09:38,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-19 15:09:38,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-11-19 15:09:38,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 152 states have (on average 1.1513157894736843) internal successors, (175), 153 states have internal predecessors, (175), 65 states have call successors, (65), 25 states have call predecessors, (65), 25 states have return successors, (68), 64 states have call predecessors, (68), 64 states have call successors, (68) [2021-11-19 15:09:38,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 308 transitions. [2021-11-19 15:09:38,994 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 308 transitions. Word has length 258 [2021-11-19 15:09:38,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:09:38,995 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 308 transitions. [2021-11-19 15:09:38,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-19 15:09:38,995 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 308 transitions. [2021-11-19 15:09:38,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-19 15:09:38,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:09:38,998 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:09:39,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 15:09:39,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:09:39,213 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:09:39,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:09:39,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1573643608, now seen corresponding path program 1 times [2021-11-19 15:09:39,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:09:39,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556500442] [2021-11-19 15:09:39,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:09:39,217 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:09:39,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:09:39,218 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:09:39,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 15:09:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:09:40,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:09:40,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:09:41,117 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-11-19 15:09:41,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:09:41,644 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2021-11-19 15:09:41,644 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:09:41,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1556500442] [2021-11-19 15:09:41,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1556500442] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:09:41,644 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:09:41,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 15:09:41,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646490293] [2021-11-19 15:09:41,645 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:09:41,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:09:41,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:09:41,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:09:41,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:09:41,646 INFO L87 Difference]: Start difference. First operand 243 states and 308 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (35), 4 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-19 15:09:41,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:09:41,728 INFO L93 Difference]: Finished difference Result 330 states and 417 transitions. [2021-11-19 15:09:41,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:09:41,729 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (35), 4 states have call predecessors, (35), 2 states have call successors, (35) Word has length 258 [2021-11-19 15:09:41,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:09:41,732 INFO L225 Difference]: With dead ends: 330 [2021-11-19 15:09:41,732 INFO L226 Difference]: Without dead ends: 257 [2021-11-19 15:09:41,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:09:41,733 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 8 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1449 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:09:41,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1449 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:09:41,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-11-19 15:09:41,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 247. [2021-11-19 15:09:41,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 155 states have (on average 1.1483870967741936) internal successors, (178), 156 states have internal predecessors, (178), 65 states have call successors, (65), 25 states have call predecessors, (65), 26 states have return successors, (69), 65 states have call predecessors, (69), 64 states have call successors, (69) [2021-11-19 15:09:41,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 312 transitions. [2021-11-19 15:09:41,749 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 312 transitions. Word has length 258 [2021-11-19 15:09:41,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:09:41,750 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 312 transitions. [2021-11-19 15:09:41,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (35), 4 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-19 15:09:41,751 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 312 transitions. [2021-11-19 15:09:41,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-19 15:09:41,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:09:41,753 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:09:41,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 15:09:41,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:09:41,972 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:09:41,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:09:41,973 INFO L85 PathProgramCache]: Analyzing trace with hash 986837594, now seen corresponding path program 1 times [2021-11-19 15:09:41,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:09:41,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901360150] [2021-11-19 15:09:41,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:09:41,976 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:09:41,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:09:41,977 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:09:42,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6432e06-df02-4186-9823-a51036dbecda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 15:11:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:11:09,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 179 conjunts are in the unsatisfiable core [2021-11-19 15:11:10,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:11:10,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-11-19 15:11:10,794 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 15:11:10,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-19 15:11:10,915 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 15:11:10,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 36 [2021-11-19 15:11:20,186 INFO L354 Elim1Store]: treesize reduction 108, result has 16.9 percent of original size [2021-11-19 15:11:20,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 61 treesize of output 67 [2021-11-19 15:11:21,782 INFO L354 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2021-11-19 15:11:21,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 79 [2021-11-19 15:11:22,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:11:22,274 INFO L354 Elim1Store]: treesize reduction 57, result has 41.8 percent of original size [2021-11-19 15:11:22,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 68 treesize of output 104 [2021-11-19 15:11:23,984 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 138 treesize of output 134 [2021-11-19 15:11:24,146 INFO L354 Elim1Store]: treesize reduction 144, result has 23.8 percent of original size [2021-11-19 15:11:24,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 147 treesize of output 176 [2021-11-19 15:11:27,484 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 11 treesize of output 7 [2021-11-19 15:19:25,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:19:32,827 WARN L227 SmtUtils]: Spent 7.37s on a formula simplification. DAG size of input: 137 DAG size of output: 56 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 15:19:32,828 INFO L354 Elim1Store]: treesize reduction 484, result has 16.1 percent of original size [2021-11-19 15:19:32,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 854 treesize of output 727 [2021-11-19 15:19:32,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:19:41,596 WARN L227 SmtUtils]: Spent 8.65s on a formula simplification. DAG size of input: 213 DAG size of output: 90 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 15:19:41,597 INFO L354 Elim1Store]: treesize reduction 916, result has 16.2 percent of original size [2021-11-19 15:19:41,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 9 new quantified variables, introduced 19 case distinctions, treesize of input 1186 treesize of output 1132 [2021-11-19 15:19:45,646 INFO L354 Elim1Store]: treesize reduction 1224, result has 17.0 percent of original size [2021-11-19 15:19:45,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 135 case distinctions, treesize of input 1271 treesize of output 1475