./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_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_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/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_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/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_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/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 97e90b5866c6e9df01c589395fdbbe46254bc553e4330f2a669b393b022bbd71 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:14:07,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:14:07,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:14:07,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:14:07,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:14:07,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:14:07,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:14:07,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:14:07,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:14:07,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:14:07,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:14:07,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:14:07,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:14:07,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:14:07,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:14:07,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:14:07,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:14:07,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:14:07,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:14:07,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:14:07,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:14:07,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:14:07,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:14:07,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:14:07,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:14:07,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:14:07,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:14:07,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:14:07,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:14:07,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:14:07,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:14:07,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:14:07,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:14:07,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:14:07,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:14:07,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:14:07,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:14:07,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:14:07,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:14:07,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:14:07,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:14:07,264 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:14:07,310 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:14:07,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:14:07,312 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:14:07,312 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:14:07,313 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:14:07,313 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:14:07,313 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:14:07,313 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:14:07,314 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:14:07,314 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:14:07,315 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:14:07,315 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:14:07,315 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:14:07,316 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:14:07,316 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:14:07,316 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:14:07,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:14:07,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:14:07,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:14:07,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:14:07,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:14:07,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:14:07,318 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:14:07,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:14:07,319 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:14:07,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:14:07,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:14:07,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:14:07,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:07,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:14:07,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:14:07,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:14:07,323 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:14:07,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:14:07,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:14:07,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:14:07,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:14:07,324 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_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97e90b5866c6e9df01c589395fdbbe46254bc553e4330f2a669b393b022bbd71 [2021-11-19 14:14:07,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:14:07,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:14:07,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:14:07,605 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:14:07,606 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:14:07,607 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i [2021-11-19 14:14:07,687 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/data/ba855fb9c/75926ff9aa0a48999af9a00e0a46b6a2/FLAGd6f7439c6 [2021-11-19 14:14:08,591 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:14:08,592 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i [2021-11-19 14:14:08,652 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/data/ba855fb9c/75926ff9aa0a48999af9a00e0a46b6a2/FLAGd6f7439c6 [2021-11-19 14:14:09,028 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/data/ba855fb9c/75926ff9aa0a48999af9a00e0a46b6a2 [2021-11-19 14:14:09,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:14:09,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:14:09,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:09,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:14:09,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:14:09,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:09" (1/1) ... [2021-11-19 14:14:09,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7640d86d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:09, skipping insertion in model container [2021-11-19 14:14:09,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:09" (1/1) ... [2021-11-19 14:14:09,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:14:09,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:14:09,524 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_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4495,4508] [2021-11-19 14:14:09,532 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_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4555,4568] [2021-11-19 14:14:09,561 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:14:09,568 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:14:10,721 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:10,721 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:10,722 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:10,723 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:10,724 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:10,738 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:10,739 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:10,741 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:10,742 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:10,744 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:10,745 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:10,746 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:10,746 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:11,253 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:14:11,255 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:14:11,256 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:14:11,257 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:14:11,259 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:14:11,259 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:14:11,260 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:14:11,261 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:14:11,262 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:14:11,262 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:14:11,517 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:14:11,900 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:11,900 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:11,946 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:11,948 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:11,956 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:11,957 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:11,979 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:11,984 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:11,985 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:11,986 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:11,986 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:11,987 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:11,988 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:12,048 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:12,103 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:14:12,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@8add0f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:12, skipping insertion in model container [2021-11-19 14:14:12,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:12,104 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:14:12,107 INFO L158 Benchmark]: Toolchain (without parser) took 3069.47ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 48.3MB in the beginning and 49.3MB in the end (delta: -944.4kB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. [2021-11-19 14:14:12,107 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 90.2MB. Free memory is still 49.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:14:12,108 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3065.00ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 48.2MB in the beginning and 49.3MB in the end (delta: -1.1MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. [2021-11-19 14:14:12,110 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 90.2MB. Free memory is still 49.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3065.00ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 48.2MB in the beginning and 49.3MB in the end (delta: -1.1MB). Peak memory consumption was 20.9MB. 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_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/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_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/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_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/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 97e90b5866c6e9df01c589395fdbbe46254bc553e4330f2a669b393b022bbd71 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:14:14,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:14:14,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:14:14,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:14:14,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:14:14,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:14:14,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:14:14,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:14:14,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:14:14,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:14:14,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:14:14,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:14:14,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:14:14,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:14:14,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:14:14,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:14:14,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:14:14,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:14:14,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:14:14,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:14:14,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:14:14,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:14:14,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:14:14,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:14:14,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:14:14,498 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:14:14,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:14:14,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:14:14,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:14:14,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:14:14,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:14:14,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:14:14,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:14:14,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:14:14,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:14:14,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:14:14,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:14:14,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:14:14,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:14:14,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:14:14,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:14:14,511 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:14:14,537 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:14:14,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:14:14,539 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:14:14,540 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:14:14,541 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:14:14,541 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:14:14,541 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:14:14,542 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:14:14,542 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:14:14,542 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:14:14,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:14:14,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:14:14,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:14:14,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:14:14,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:14:14,546 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:14:14,546 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:14:14,546 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:14:14,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:14:14,547 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:14:14,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:14:14,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:14:14,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:14:14,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:14:14,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:14,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:14:14,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:14:14,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:14:14,549 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:14:14,549 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:14:14,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:14:14,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:14:14,550 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:14:14,550 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_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97e90b5866c6e9df01c589395fdbbe46254bc553e4330f2a669b393b022bbd71 [2021-11-19 14:14:14,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:14:15,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:14:15,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:14:15,016 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:14:15,017 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:14:15,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i [2021-11-19 14:14:15,087 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/data/a9096da11/24c81ec136ee4d3eb0a87952700f23db/FLAGdcf42ea06 [2021-11-19 14:14:15,976 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:14:15,977 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i [2021-11-19 14:14:16,025 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/data/a9096da11/24c81ec136ee4d3eb0a87952700f23db/FLAGdcf42ea06 [2021-11-19 14:14:16,426 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/data/a9096da11/24c81ec136ee4d3eb0a87952700f23db [2021-11-19 14:14:16,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:14:16,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:14:16,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:16,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:14:16,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:14:16,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:16" (1/1) ... [2021-11-19 14:14:16,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2155d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:16, skipping insertion in model container [2021-11-19 14:14:16,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:16" (1/1) ... [2021-11-19 14:14:16,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:14:16,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:14:16,938 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_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4495,4508] [2021-11-19 14:14:16,945 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_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4555,4568] [2021-11-19 14:14:16,974 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:14:16,981 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:14:18,467 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:18,468 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:18,468 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:18,469 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:18,470 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:18,495 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:18,506 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:18,515 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:18,515 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:18,517 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:18,517 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:18,518 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:18,518 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,016 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:14:19,018 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:14:19,019 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:14:19,020 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:14:19,022 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:14:19,022 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:14:19,023 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:14:19,024 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:14:19,025 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:14:19,026 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:14:19,259 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:14:19,667 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,669 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,723 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,724 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,735 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,735 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,767 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,768 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,768 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,769 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,769 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,769 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,770 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,805 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:19,854 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:14:19,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:14:19,926 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_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4495,4508] [2021-11-19 14:14:19,927 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_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4555,4568] [2021-11-19 14:14:19,928 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:14:19,929 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:14:19,982 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,983 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,983 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,983 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,984 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,993 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,994 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,995 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,995 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,996 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,996 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,997 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:19,997 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,064 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:14:20,066 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:14:20,067 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:14:20,068 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:14:20,070 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:14:20,071 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:14:20,072 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:14:20,072 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:14:20,073 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:14:20,073 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:14:20,105 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:14:20,252 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,253 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,261 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,261 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,266 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,267 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,283 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,284 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,284 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,284 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,285 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,285 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,286 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,308 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:20,346 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:14:20,371 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_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4495,4508] [2021-11-19 14:14:20,372 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_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4555,4568] [2021-11-19 14:14:20,374 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:14:20,379 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:14:20,416 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,417 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,418 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,418 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,419 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,442 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,443 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,444 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,444 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,446 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,447 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,447 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,448 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,477 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:14:20,479 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:14:20,479 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:14:20,480 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:14:20,481 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:14:20,481 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:14:20,481 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:14:20,482 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:14:20,482 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:14:20,483 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:14:20,501 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:14:20,679 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,680 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,693 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,693 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,697 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,697 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,712 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,712 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,713 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,713 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,714 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,714 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,715 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:20,765 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:21,210 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:14:21,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:21 WrapperNode [2021-11-19 14:14:21,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:21,212 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:14:21,212 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:14:21,212 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:14:21,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:21" (1/1) ... [2021-11-19 14:14:21,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:21" (1/1) ... [2021-11-19 14:14:21,455 INFO L137 Inliner]: procedures = 797, calls = 2501, calls flagged for inlining = 71, calls inlined = 18, statements flattened = 1055 [2021-11-19 14:14:21,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:14:21,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:14:21,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:14:21,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:14:21,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:21" (1/1) ... [2021-11-19 14:14:21,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:21" (1/1) ... [2021-11-19 14:14:21,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:21" (1/1) ... [2021-11-19 14:14:21,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:21" (1/1) ... [2021-11-19 14:14:21,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:21" (1/1) ... [2021-11-19 14:14:21,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:21" (1/1) ... [2021-11-19 14:14:21,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:21" (1/1) ... [2021-11-19 14:14:21,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:14:21,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:14:21,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:14:21,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:14:21,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:21" (1/1) ... [2021-11-19 14:14:21,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:21,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:14:21,601 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:14:21,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:14:21,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-19 14:14:21,652 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 14:14:21,658 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 14:14:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-19 14:14:21,659 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-19 14:14:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:14:21,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:14:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-19 14:14:21,659 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-19 14:14:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:14:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:14:21,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:14:21,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:14:21,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:14:21,660 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 14:14:21,660 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 14:14:21,660 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-19 14:14:21,660 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-19 14:14:21,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 14:14:21,661 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-19 14:14:21,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:14:21,661 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-19 14:14:21,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-19 14:14:21,661 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-19 14:14:21,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:14:21,661 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 14:14:21,662 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 14:14:21,662 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2021-11-19 14:14:21,662 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2021-11-19 14:14:21,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 14:14:21,663 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-11-19 14:14:21,663 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-11-19 14:14:21,663 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-19 14:14:21,663 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-19 14:14:21,663 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2021-11-19 14:14:21,663 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2021-11-19 14:14:21,663 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2021-11-19 14:14:21,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2021-11-19 14:14:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:14:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:14:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:14:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-19 14:14:21,664 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-19 14:14:21,665 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:14:21,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:14:21,665 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2021-11-19 14:14:21,665 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2021-11-19 14:14:21,665 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2021-11-19 14:14:21,665 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2021-11-19 14:14:21,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:14:21,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:14:21,665 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2021-11-19 14:14:21,666 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2021-11-19 14:14:21,666 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:14:21,666 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:14:21,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:14:21,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:14:21,666 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-19 14:14:21,666 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-19 14:14:21,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:14:21,667 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 14:14:21,667 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 14:14:21,667 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-19 14:14:21,668 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-19 14:14:21,668 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-19 14:14:21,668 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-19 14:14:21,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2021-11-19 14:14:21,668 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_entry [2021-11-19 14:14:21,668 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_entry [2021-11-19 14:14:21,668 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-11-19 14:14:21,668 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-11-19 14:14:21,668 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2021-11-19 14:14:21,669 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2021-11-19 14:14:22,129 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:14:22,132 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:14:23,429 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !true; [2021-11-19 14:14:23,430 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true; [2021-11-19 14:14:23,478 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2021-11-19 14:14:23,656 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-11-19 14:14:29,944 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !true; [2021-11-19 14:14:29,944 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !true; [2021-11-19 14:14:29,970 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:14:29,980 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:14:29,980 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-19 14:14:29,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:14:29 BoogieIcfgContainer [2021-11-19 14:14:29,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:14:29,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:14:29,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:14:29,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:14:29,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:14:16" (1/3) ... [2021-11-19 14:14:29,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61995544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:14:29, skipping insertion in model container [2021-11-19 14:14:29,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:21" (2/3) ... [2021-11-19 14:14:29,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61995544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:14:29, skipping insertion in model container [2021-11-19 14:14:29,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:14:29" (3/3) ... [2021-11-19 14:14:29,993 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_remove_harness.i [2021-11-19 14:14:29,998 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:14:29,999 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:14:30,101 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:14:30,110 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:14:30,110 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:14:30,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 301 states, 195 states have (on average 1.2564102564102564) internal successors, (245), 190 states have internal predecessors, (245), 84 states have call successors, (84), 26 states have call predecessors, (84), 26 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2021-11-19 14:14:30,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-19 14:14:30,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:30,167 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:14:30,168 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:30,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:30,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1239254370, now seen corresponding path program 1 times [2021-11-19 14:14:30,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:30,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969065495] [2021-11-19 14:14:30,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:30,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:30,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:30,201 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:30,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:14:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:31,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:14:31,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:31,999 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2021-11-19 14:14:31,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:32,699 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2021-11-19 14:14:32,700 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:32,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969065495] [2021-11-19 14:14:32,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969065495] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:14:32,701 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:14:32,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 14:14:32,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646260660] [2021-11-19 14:14:32,705 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:32,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:14:32,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:32,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:14:32,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:14:32,775 INFO L87 Difference]: Start difference. First operand has 301 states, 195 states have (on average 1.2564102564102564) internal successors, (245), 190 states have internal predecessors, (245), 84 states have call successors, (84), 26 states have call predecessors, (84), 26 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (51), 3 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-19 14:14:32,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:32,987 INFO L93 Difference]: Finished difference Result 600 states and 873 transitions. [2021-11-19 14:14:32,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:14:32,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (51), 3 states have call predecessors, (51), 2 states have call successors, (51) Word has length 182 [2021-11-19 14:14:32,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:33,010 INFO L225 Difference]: With dead ends: 600 [2021-11-19 14:14:33,010 INFO L226 Difference]: Without dead ends: 297 [2021-11-19 14:14:33,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 359 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 14:14:33,023 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 2 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1580 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 14:14:33,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1580 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:14:33,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-19 14:14:33,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2021-11-19 14:14:33,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 185 states have (on average 1.2216216216216216) internal successors, (226), 187 states have internal predecessors, (226), 84 states have call successors, (84), 26 states have call predecessors, (84), 27 states have return successors, (83), 83 states have call predecessors, (83), 82 states have call successors, (83) [2021-11-19 14:14:33,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 393 transitions. [2021-11-19 14:14:33,130 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 393 transitions. Word has length 182 [2021-11-19 14:14:33,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:33,132 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 393 transitions. [2021-11-19 14:14:33,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (51), 3 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-19 14:14:33,132 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 393 transitions. [2021-11-19 14:14:33,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-19 14:14:33,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:33,144 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:14:33,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:33,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:33,368 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:33,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:33,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1283812874, now seen corresponding path program 1 times [2021-11-19 14:14:33,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:33,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589322130] [2021-11-19 14:14:33,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:33,372 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:33,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:33,374 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:33,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:14:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:34,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:14:34,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-19 14:14:34,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:35,674 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2021-11-19 14:14:35,674 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:35,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589322130] [2021-11-19 14:14:35,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589322130] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:14:35,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:14:35,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-19 14:14:35,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903445812] [2021-11-19 14:14:35,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:35,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:14:35,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:35,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:14:35,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:14:35,678 INFO L87 Difference]: Start difference. First operand 297 states and 393 transitions. Second operand has 6 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-19 14:14:36,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:36,203 INFO L93 Difference]: Finished difference Result 552 states and 735 transitions. [2021-11-19 14:14:36,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:14:36,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 188 [2021-11-19 14:14:36,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:36,208 INFO L225 Difference]: With dead ends: 552 [2021-11-19 14:14:36,209 INFO L226 Difference]: Without dead ends: 299 [2021-11-19 14:14:36,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:14:36,211 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 3 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:36,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1763 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:14:36,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-11-19 14:14:36,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 293. [2021-11-19 14:14:36,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 182 states have (on average 1.2142857142857142) internal successors, (221), 184 states have internal predecessors, (221), 84 states have call successors, (84), 26 states have call predecessors, (84), 26 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2021-11-19 14:14:36,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 387 transitions. [2021-11-19 14:14:36,235 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 387 transitions. Word has length 188 [2021-11-19 14:14:36,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:36,236 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 387 transitions. [2021-11-19 14:14:36,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-19 14:14:36,236 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 387 transitions. [2021-11-19 14:14:36,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-19 14:14:36,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:36,240 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:14:36,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:36,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:36,454 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:36,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:36,455 INFO L85 PathProgramCache]: Analyzing trace with hash -65267262, now seen corresponding path program 1 times [2021-11-19 14:14:36,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:36,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486656981] [2021-11-19 14:14:36,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:36,459 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:36,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:36,460 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:36,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:14:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:37,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 1518 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:14:37,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-11-19 14:14:38,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:38,848 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-11-19 14:14:38,848 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:38,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486656981] [2021-11-19 14:14:38,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486656981] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:14:38,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:14:38,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 14:14:38,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594163458] [2021-11-19 14:14:38,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:38,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:14:38,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:38,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:14:38,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:14:38,850 INFO L87 Difference]: Start difference. First operand 293 states and 387 transitions. Second operand has 5 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), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-19 14:14:41,095 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:14:41,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:41,334 INFO L93 Difference]: Finished difference Result 540 states and 725 transitions. [2021-11-19 14:14:41,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:14:41,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 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), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 193 [2021-11-19 14:14:41,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:41,340 INFO L225 Difference]: With dead ends: 540 [2021-11-19 14:14:41,340 INFO L226 Difference]: Without dead ends: 300 [2021-11-19 14:14:41,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:14:41,342 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 20 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:41,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 1452 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 14:14:41,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-11-19 14:14:41,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2021-11-19 14:14:41,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 187 states have (on average 1.213903743315508) internal successors, (227), 190 states have internal predecessors, (227), 85 states have call successors, (85), 26 states have call predecessors, (85), 27 states have return successors, (88), 83 states have call predecessors, (88), 83 states have call successors, (88) [2021-11-19 14:14:41,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 400 transitions. [2021-11-19 14:14:41,382 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 400 transitions. Word has length 193 [2021-11-19 14:14:41,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:41,383 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 400 transitions. [2021-11-19 14:14:41,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-19 14:14:41,383 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 400 transitions. [2021-11-19 14:14:41,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-19 14:14:41,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:41,387 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:14:41,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:41,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:41,603 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:41,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:41,603 INFO L85 PathProgramCache]: Analyzing trace with hash 641329344, now seen corresponding path program 1 times [2021-11-19 14:14:41,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:41,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854314034] [2021-11-19 14:14:41,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:41,605 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:41,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:41,606 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:41,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:14:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:42,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 14:14:42,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:43,039 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 14:14:44,260 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-11-19 14:14:44,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:45,265 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 14:14:45,635 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-11-19 14:14:45,635 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:45,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854314034] [2021-11-19 14:14:45,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854314034] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:14:45,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:14:45,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 15 [2021-11-19 14:14:45,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231182202] [2021-11-19 14:14:45,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:45,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:14:45,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:45,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:14:45,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:14:45,638 INFO L87 Difference]: Start difference. First operand 300 states and 400 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 9 states have internal predecessors, (82), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-19 14:14:48,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:14:48,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:48,482 INFO L93 Difference]: Finished difference Result 559 states and 751 transitions. [2021-11-19 14:14:48,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:14:48,486 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 9 states have internal predecessors, (82), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 193 [2021-11-19 14:14:48,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:48,489 INFO L225 Difference]: With dead ends: 559 [2021-11-19 14:14:48,490 INFO L226 Difference]: Without dead ends: 304 [2021-11-19 14:14:48,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:14:48,492 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 30 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1815 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:48,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 1815 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 1 Unknown, 99 Unchecked, 2.7s Time] [2021-11-19 14:14:48,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-19 14:14:48,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-11-19 14:14:48,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 191 states have (on average 1.2094240837696335) internal successors, (231), 193 states have internal predecessors, (231), 85 states have call successors, (85), 27 states have call predecessors, (85), 27 states have return successors, (88), 83 states have call predecessors, (88), 83 states have call successors, (88) [2021-11-19 14:14:48,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 404 transitions. [2021-11-19 14:14:48,513 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 404 transitions. Word has length 193 [2021-11-19 14:14:48,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:48,514 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 404 transitions. [2021-11-19 14:14:48,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 9 states have internal predecessors, (82), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-19 14:14:48,514 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 404 transitions. [2021-11-19 14:14:48,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-19 14:14:48,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:48,519 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:14:48,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:48,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:48,739 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:48,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:48,740 INFO L85 PathProgramCache]: Analyzing trace with hash 700808702, now seen corresponding path program 1 times [2021-11-19 14:14:48,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:48,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000457262] [2021-11-19 14:14:48,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:48,743 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:48,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:48,743 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:48,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:14:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:49,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 1535 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 14:14:49,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:50,083 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 14:14:51,262 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-11-19 14:14:51,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:52,519 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 14:14:52,849 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2021-11-19 14:14:52,849 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:52,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000457262] [2021-11-19 14:14:52,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000457262] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:14:52,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:14:52,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 17 [2021-11-19 14:14:52,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718413966] [2021-11-19 14:14:52,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:52,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:14:52,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:52,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:14:52,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:14:52,851 INFO L87 Difference]: Start difference. First operand 304 states and 404 transitions. Second operand has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 10 states have internal predecessors, (86), 5 states have call successors, (34), 3 states have call predecessors, (34), 5 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) [2021-11-19 14:14:54,931 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:14:57,944 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:14:59,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:59,337 INFO L93 Difference]: Finished difference Result 560 states and 752 transitions. [2021-11-19 14:14:59,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:14:59,351 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 10 states have internal predecessors, (86), 5 states have call successors, (34), 3 states have call predecessors, (34), 5 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) Word has length 199 [2021-11-19 14:14:59,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:59,355 INFO L225 Difference]: With dead ends: 560 [2021-11-19 14:14:59,355 INFO L226 Difference]: Without dead ends: 307 [2021-11-19 14:14:59,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-11-19 14:14:59,357 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 24 mSDsluCounter, 3394 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3771 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 258 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:59,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 3771 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 91 Invalid, 2 Unknown, 258 Unchecked, 6.4s Time] [2021-11-19 14:14:59,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-19 14:14:59,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2021-11-19 14:14:59,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 193 states have (on average 1.2072538860103628) internal successors, (233), 195 states have internal predecessors, (233), 86 states have call successors, (86), 28 states have call predecessors, (86), 27 states have return successors, (89), 83 states have call predecessors, (89), 84 states have call successors, (89) [2021-11-19 14:14:59,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 408 transitions. [2021-11-19 14:14:59,384 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 408 transitions. Word has length 199 [2021-11-19 14:14:59,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:59,384 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 408 transitions. [2021-11-19 14:14:59,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 10 states have internal predecessors, (86), 5 states have call successors, (34), 3 states have call predecessors, (34), 5 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) [2021-11-19 14:14:59,385 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 408 transitions. [2021-11-19 14:14:59,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-19 14:14:59,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:59,387 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:14:59,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:59,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:59,587 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:59,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:59,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1607971567, now seen corresponding path program 1 times [2021-11-19 14:14:59,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:59,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923923962] [2021-11-19 14:14:59,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:59,591 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:59,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:59,593 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:59,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:15:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:00,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 1552 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:15:00,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:01,403 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2021-11-19 14:15:01,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:02,154 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-11-19 14:15:02,154 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:02,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923923962] [2021-11-19 14:15:02,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923923962] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:15:02,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:15:02,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 14:15:02,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527104542] [2021-11-19 14:15:02,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:02,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:15:02,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:15:02,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:15:02,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:15:02,157 INFO L87 Difference]: Start difference. First operand 307 states and 408 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-19 14:15:04,337 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:15:04,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:04,654 INFO L93 Difference]: Finished difference Result 524 states and 706 transitions. [2021-11-19 14:15:04,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:15:04,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 204 [2021-11-19 14:15:04,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:04,658 INFO L225 Difference]: With dead ends: 524 [2021-11-19 14:15:04,658 INFO L226 Difference]: Without dead ends: 307 [2021-11-19 14:15:04,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:15:04,660 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 51 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:04,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 1401 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 14:15:04,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-19 14:15:04,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2021-11-19 14:15:04,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 193 states have (on average 1.2072538860103628) internal successors, (233), 195 states have internal predecessors, (233), 86 states have call successors, (86), 28 states have call predecessors, (86), 27 states have return successors, (87), 83 states have call predecessors, (87), 84 states have call successors, (87) [2021-11-19 14:15:04,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 406 transitions. [2021-11-19 14:15:04,678 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 406 transitions. Word has length 204 [2021-11-19 14:15:04,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:04,679 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 406 transitions. [2021-11-19 14:15:04,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-19 14:15:04,680 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 406 transitions. [2021-11-19 14:15:04,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-19 14:15:04,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:04,683 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:04,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:15:04,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:15:04,908 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:04,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:04,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1115345393, now seen corresponding path program 2 times [2021-11-19 14:15:04,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:04,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868609525] [2021-11-19 14:15:04,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:15:04,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:04,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:04,911 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:04,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:15:05,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 14:15:05,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:15:05,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:15:05,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:05,811 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-19 14:15:05,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:06,253 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-19 14:15:06,254 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:06,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868609525] [2021-11-19 14:15:06,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868609525] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:15:06,254 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:15:06,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-19 14:15:06,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996253562] [2021-11-19 14:15:06,254 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:06,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:15:06,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:15:06,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:15:06,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:15:06,257 INFO L87 Difference]: Start difference. First operand 307 states and 406 transitions. Second operand has 7 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2021-11-19 14:15:06,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:06,398 INFO L93 Difference]: Finished difference Result 315 states and 413 transitions. [2021-11-19 14:15:06,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:15:06,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 204 [2021-11-19 14:15:06,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:06,401 INFO L225 Difference]: With dead ends: 315 [2021-11-19 14:15:06,401 INFO L226 Difference]: Without dead ends: 313 [2021-11-19 14:15:06,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 401 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 14:15:06,403 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 15 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:06,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 1893 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:15:06,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-11-19 14:15:06,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 311. [2021-11-19 14:15:06,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 196 states have (on average 1.2040816326530612) internal successors, (236), 198 states have internal predecessors, (236), 86 states have call successors, (86), 29 states have call predecessors, (86), 28 states have return successors, (87), 83 states have call predecessors, (87), 84 states have call successors, (87) [2021-11-19 14:15:06,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 409 transitions. [2021-11-19 14:15:06,427 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 409 transitions. Word has length 204 [2021-11-19 14:15:06,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:06,428 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 409 transitions. [2021-11-19 14:15:06,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2021-11-19 14:15:06,429 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 409 transitions. [2021-11-19 14:15:06,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-19 14:15:06,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:06,432 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:06,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:15:06,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:15:06,647 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:06,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:06,648 INFO L85 PathProgramCache]: Analyzing trace with hash 400903547, now seen corresponding path program 1 times [2021-11-19 14:15:06,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:06,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409741770] [2021-11-19 14:15:06,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:06,650 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:06,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:06,651 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:06,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:15:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:07,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:15:07,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:08,326 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-19 14:15:08,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:08,979 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 29 proven. 21 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2021-11-19 14:15:08,979 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:08,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409741770] [2021-11-19 14:15:08,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409741770] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:15:08,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:15:08,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2021-11-19 14:15:08,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292885416] [2021-11-19 14:15:08,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:08,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:15:08,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:15:08,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:15:08,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:15:08,981 INFO L87 Difference]: Start difference. First operand 311 states and 409 transitions. Second operand has 7 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-19 14:15:09,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:09,592 INFO L93 Difference]: Finished difference Result 540 states and 723 transitions. [2021-11-19 14:15:09,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:15:09,595 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 217 [2021-11-19 14:15:09,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:09,599 INFO L225 Difference]: With dead ends: 540 [2021-11-19 14:15:09,599 INFO L226 Difference]: Without dead ends: 319 [2021-11-19 14:15:09,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 426 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 14:15:09,601 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 3 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:09,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2117 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:15:09,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-11-19 14:15:09,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 314. [2021-11-19 14:15:09,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 198 states have (on average 1.202020202020202) internal successors, (238), 201 states have internal predecessors, (238), 86 states have call successors, (86), 29 states have call predecessors, (86), 29 states have return successors, (91), 83 states have call predecessors, (91), 84 states have call successors, (91) [2021-11-19 14:15:09,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 415 transitions. [2021-11-19 14:15:09,626 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 415 transitions. Word has length 217 [2021-11-19 14:15:09,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:09,627 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 415 transitions. [2021-11-19 14:15:09,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-19 14:15:09,627 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 415 transitions. [2021-11-19 14:15:09,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-19 14:15:09,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:09,632 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:09,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:15:09,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:15:09,856 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:09,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:09,856 INFO L85 PathProgramCache]: Analyzing trace with hash 924128445, now seen corresponding path program 2 times [2021-11-19 14:15:09,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:09,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904248309] [2021-11-19 14:15:09,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:15:09,861 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:09,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:09,862 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:09,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:15:18,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:15:18,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:15:18,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 1590 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 14:15:18,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:20,442 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-11-19 14:15:20,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 446 trivial. 0 not checked. [2021-11-19 14:15:21,691 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:21,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904248309] [2021-11-19 14:15:21,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904248309] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:15:21,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:15:21,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2021-11-19 14:15:21,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263212653] [2021-11-19 14:15:21,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:21,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:15:21,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:15:21,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:15:21,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:15:21,694 INFO L87 Difference]: Start difference. First operand 314 states and 415 transitions. Second operand has 8 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 2 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-19 14:15:23,820 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:15:25,828 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:15:28,725 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:15:30,745 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:15:32,572 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:15:33,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:33,360 INFO L93 Difference]: Finished difference Result 542 states and 731 transitions. [2021-11-19 14:15:33,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:15:33,372 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 2 states have call predecessors, (36), 3 states have call successors, (36) Word has length 223 [2021-11-19 14:15:33,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:33,375 INFO L225 Difference]: With dead ends: 542 [2021-11-19 14:15:33,376 INFO L226 Difference]: Without dead ends: 316 [2021-11-19 14:15:33,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 434 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 14:15:33,378 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 7 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:33,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1759 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 4 Unknown, 104 Unchecked, 11.3s Time] [2021-11-19 14:15:33,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-11-19 14:15:33,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 313. [2021-11-19 14:15:33,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 198 states have (on average 1.202020202020202) internal successors, (238), 200 states have internal predecessors, (238), 85 states have call successors, (85), 29 states have call predecessors, (85), 29 states have return successors, (90), 83 states have call predecessors, (90), 83 states have call successors, (90) [2021-11-19 14:15:33,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 413 transitions. [2021-11-19 14:15:33,396 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 413 transitions. Word has length 223 [2021-11-19 14:15:33,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:33,397 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 413 transitions. [2021-11-19 14:15:33,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 2 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-19 14:15:33,397 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 413 transitions. [2021-11-19 14:15:33,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-19 14:15:33,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:33,427 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:33,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:15:33,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:15:33,644 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:33,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:33,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1742974628, now seen corresponding path program 3 times [2021-11-19 14:15:33,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:33,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842291216] [2021-11-19 14:15:33,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:15:33,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:33,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:33,647 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:33,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:15:38,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 14:15:38,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:15:38,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:15:38,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:39,249 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-11-19 14:15:39,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:39,831 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2021-11-19 14:15:39,831 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:39,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842291216] [2021-11-19 14:15:39,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842291216] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:15:39,832 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:15:39,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-19 14:15:39,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899560356] [2021-11-19 14:15:39,832 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:39,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:15:39,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:15:39,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:15:39,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:15:39,833 INFO L87 Difference]: Start difference. First operand 313 states and 413 transitions. Second operand has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-19 14:15:40,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:40,296 INFO L93 Difference]: Finished difference Result 527 states and 704 transitions. [2021-11-19 14:15:40,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:15:40,296 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 228 [2021-11-19 14:15:40,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:40,299 INFO L225 Difference]: With dead ends: 527 [2021-11-19 14:15:40,299 INFO L226 Difference]: Without dead ends: 317 [2021-11-19 14:15:40,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:15:40,301 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 5 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:40,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 1426 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:15:40,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-11-19 14:15:40,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 315. [2021-11-19 14:15:40,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 199 states have (on average 1.2010050251256281) internal successors, (239), 202 states have internal predecessors, (239), 85 states have call successors, (85), 29 states have call predecessors, (85), 30 states have return successors, (97), 83 states have call predecessors, (97), 83 states have call successors, (97) [2021-11-19 14:15:40,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 421 transitions. [2021-11-19 14:15:40,321 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 421 transitions. Word has length 228 [2021-11-19 14:15:40,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:40,322 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 421 transitions. [2021-11-19 14:15:40,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-19 14:15:40,322 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 421 transitions. [2021-11-19 14:15:40,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-19 14:15:40,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:40,324 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:40,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-19 14:15:40,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:15:40,547 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:40,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:40,548 INFO L85 PathProgramCache]: Analyzing trace with hash -257285303, now seen corresponding path program 1 times [2021-11-19 14:15:40,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:40,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451230572] [2021-11-19 14:15:40,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:40,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:40,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:40,551 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:40,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:15:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:41,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 1624 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:15:41,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:42,530 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2021-11-19 14:15:42,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2021-11-19 14:15:43,403 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:43,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451230572] [2021-11-19 14:15:43,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451230572] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:15:43,403 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:15:43,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-19 14:15:43,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516399433] [2021-11-19 14:15:43,403 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:43,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:15:43,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:15:43,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:15:43,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:15:43,405 INFO L87 Difference]: Start difference. First operand 315 states and 421 transitions. Second operand has 6 states, 5 states have (on average 20.2) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (43), 3 states have call predecessors, (43), 4 states have call successors, (43) [2021-11-19 14:15:45,648 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:15:45,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:45,942 INFO L93 Difference]: Finished difference Result 535 states and 721 transitions. [2021-11-19 14:15:45,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:15:45,943 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.2) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (43), 3 states have call predecessors, (43), 4 states have call successors, (43) Word has length 233 [2021-11-19 14:15:45,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:45,946 INFO L225 Difference]: With dead ends: 535 [2021-11-19 14:15:45,946 INFO L226 Difference]: Without dead ends: 308 [2021-11-19 14:15:45,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:15:45,947 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 86 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:45,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 1371 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 40 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 14:15:45,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-11-19 14:15:45,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2021-11-19 14:15:45,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 194 states have (on average 1.1958762886597938) internal successors, (232), 196 states have internal predecessors, (232), 84 states have call successors, (84), 29 states have call predecessors, (84), 29 states have return successors, (92), 82 states have call predecessors, (92), 82 states have call successors, (92) [2021-11-19 14:15:45,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 408 transitions. [2021-11-19 14:15:45,965 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 408 transitions. Word has length 233 [2021-11-19 14:15:45,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:45,966 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 408 transitions. [2021-11-19 14:15:45,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.2) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (43), 3 states have call predecessors, (43), 4 states have call successors, (43) [2021-11-19 14:15:45,967 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 408 transitions. [2021-11-19 14:15:45,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-19 14:15:45,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:45,969 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:46,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:15:46,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:15:46,192 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:46,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:46,192 INFO L85 PathProgramCache]: Analyzing trace with hash -459109237, now seen corresponding path program 1 times [2021-11-19 14:15:46,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:46,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280517800] [2021-11-19 14:15:46,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:46,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:46,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:46,195 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:46,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:15:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:47,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 14:15:47,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:51,122 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 324 proven. 3 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-11-19 14:15:51,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:52,956 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-19 14:15:52,957 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 14:15:52,971 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-19 14:15:52,971 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 14:15:53,219 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2021-11-19 14:15:53,219 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:53,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280517800] [2021-11-19 14:15:53,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280517800] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:15:53,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1421834762] [2021-11-19 14:15:53,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:53,220 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:15:53,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:15:53,227 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:15:53,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-19 14:15:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:53,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:15:53,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:54,980 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2021-11-19 14:15:54,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:55,730 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 41 proven. 9 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2021-11-19 14:15:55,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1421834762] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:15:55,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:15:55,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13, 12, 7] total 25 [2021-11-19 14:15:55,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553798165] [2021-11-19 14:15:55,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:55,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:15:55,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:15:55,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:15:55,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2021-11-19 14:15:55,732 INFO L87 Difference]: Start difference. First operand 308 states and 408 transitions. Second operand has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-19 14:15:56,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:56,515 INFO L93 Difference]: Finished difference Result 523 states and 698 transitions. [2021-11-19 14:15:56,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:15:56,516 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 233 [2021-11-19 14:15:56,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:56,519 INFO L225 Difference]: With dead ends: 523 [2021-11-19 14:15:56,519 INFO L226 Difference]: Without dead ends: 310 [2021-11-19 14:15:56,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 929 GetRequests, 897 SyntacticMatches, 8 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2021-11-19 14:15:56,524 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 3 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2111 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:56,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2111 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:15:56,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-11-19 14:15:56,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 308. [2021-11-19 14:15:56,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 194 states have (on average 1.1958762886597938) internal successors, (232), 196 states have internal predecessors, (232), 84 states have call successors, (84), 29 states have call predecessors, (84), 29 states have return successors, (91), 82 states have call predecessors, (91), 82 states have call successors, (91) [2021-11-19 14:15:56,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 407 transitions. [2021-11-19 14:15:56,543 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 407 transitions. Word has length 233 [2021-11-19 14:15:56,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:56,545 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 407 transitions. [2021-11-19 14:15:56,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-19 14:15:56,546 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 407 transitions. [2021-11-19 14:15:56,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-11-19 14:15:56,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:56,548 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:56,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:15:56,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:15:56,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:15:56,964 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:56,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:56,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2069480192, now seen corresponding path program 1 times [2021-11-19 14:15:56,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:56,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414934999] [2021-11-19 14:15:56,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:56,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:56,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:56,969 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:57,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:15:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:58,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:15:58,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:58,868 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2021-11-19 14:15:58,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2021-11-19 14:15:59,390 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:59,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414934999] [2021-11-19 14:15:59,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414934999] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:15:59,390 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:15:59,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 14:15:59,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601818001] [2021-11-19 14:15:59,391 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:59,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:15:59,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:15:59,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:15:59,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:15:59,393 INFO L87 Difference]: Start difference. First operand 308 states and 407 transitions. Second operand has 8 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2021-11-19 14:15:59,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:59,579 INFO L93 Difference]: Finished difference Result 320 states and 419 transitions. [2021-11-19 14:15:59,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:15:59,579 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 244 [2021-11-19 14:15:59,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:59,582 INFO L225 Difference]: With dead ends: 320 [2021-11-19 14:15:59,582 INFO L226 Difference]: Without dead ends: 318 [2021-11-19 14:15:59,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 480 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 14:15:59,583 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 13 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:59,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1916 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:15:59,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-11-19 14:15:59,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 312. [2021-11-19 14:15:59,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 197 states have (on average 1.1928934010152283) internal successors, (235), 199 states have internal predecessors, (235), 84 states have call successors, (84), 30 states have call predecessors, (84), 30 states have return successors, (91), 82 states have call predecessors, (91), 82 states have call successors, (91) [2021-11-19 14:15:59,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 410 transitions. [2021-11-19 14:15:59,601 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 410 transitions. Word has length 244 [2021-11-19 14:15:59,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:59,603 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 410 transitions. [2021-11-19 14:15:59,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2021-11-19 14:15:59,603 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 410 transitions. [2021-11-19 14:15:59,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-19 14:15:59,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:59,606 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:59,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:15:59,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:15:59,827 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:59,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:59,828 INFO L85 PathProgramCache]: Analyzing trace with hash -554394461, now seen corresponding path program 1 times [2021-11-19 14:15:59,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:59,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980941033] [2021-11-19 14:15:59,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:59,831 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:59,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:59,833 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:59,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:16:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:01,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 1703 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:16:01,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:01,931 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2021-11-19 14:16:01,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:02,471 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2021-11-19 14:16:02,471 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:02,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980941033] [2021-11-19 14:16:02,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980941033] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:16:02,472 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:16:02,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 14:16:02,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633067529] [2021-11-19 14:16:02,473 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:02,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:16:02,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:02,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:16:02,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:16:02,475 INFO L87 Difference]: Start difference. First operand 312 states and 410 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 4 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2021-11-19 14:16:02,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:02,858 INFO L93 Difference]: Finished difference Result 545 states and 738 transitions. [2021-11-19 14:16:02,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:16:02,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 4 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) Word has length 252 [2021-11-19 14:16:02,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:02,863 INFO L225 Difference]: With dead ends: 545 [2021-11-19 14:16:02,863 INFO L226 Difference]: Without dead ends: 360 [2021-11-19 14:16:02,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:16:02,865 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 118 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:02,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1519 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:16:02,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-11-19 14:16:02,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 322. [2021-11-19 14:16:02,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 202 states have (on average 1.188118811881188) internal successors, (240), 204 states have internal predecessors, (240), 89 states have call successors, (89), 30 states have call predecessors, (89), 30 states have return successors, (96), 87 states have call predecessors, (96), 87 states have call successors, (96) [2021-11-19 14:16:02,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 425 transitions. [2021-11-19 14:16:02,887 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 425 transitions. Word has length 252 [2021-11-19 14:16:02,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:02,888 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 425 transitions. [2021-11-19 14:16:02,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 4 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2021-11-19 14:16:02,889 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 425 transitions. [2021-11-19 14:16:02,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-19 14:16:02,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:02,891 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:16:02,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:03,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:16:03,112 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:03,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:03,112 INFO L85 PathProgramCache]: Analyzing trace with hash 770461733, now seen corresponding path program 1 times [2021-11-19 14:16:03,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:03,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522332587] [2021-11-19 14:16:03,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:03,114 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:03,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:03,115 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:03,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 14:16:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:04,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 1703 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:16:04,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:05,125 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2021-11-19 14:16:05,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:05,757 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2021-11-19 14:16:05,757 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:05,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522332587] [2021-11-19 14:16:05,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522332587] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:16:05,758 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:16:05,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 14:16:05,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977025037] [2021-11-19 14:16:05,758 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:05,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:16:05,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:05,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:16:05,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:16:05,760 INFO L87 Difference]: Start difference. First operand 322 states and 425 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:16:05,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:05,965 INFO L93 Difference]: Finished difference Result 465 states and 611 transitions. [2021-11-19 14:16:05,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:16:05,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 252 [2021-11-19 14:16:05,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:05,969 INFO L225 Difference]: With dead ends: 465 [2021-11-19 14:16:05,969 INFO L226 Difference]: Without dead ends: 322 [2021-11-19 14:16:05,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 499 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 14:16:05,971 INFO L933 BasicCegarLoop]: 380 mSDtfsCounter, 32 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:05,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 1460 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:16:05,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-11-19 14:16:05,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2021-11-19 14:16:05,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 202 states have (on average 1.1782178217821782) internal successors, (238), 204 states have internal predecessors, (238), 89 states have call successors, (89), 30 states have call predecessors, (89), 30 states have return successors, (96), 87 states have call predecessors, (96), 87 states have call successors, (96) [2021-11-19 14:16:05,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 423 transitions. [2021-11-19 14:16:05,990 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 423 transitions. Word has length 252 [2021-11-19 14:16:05,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:05,991 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 423 transitions. [2021-11-19 14:16:05,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:16:05,991 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 423 transitions. [2021-11-19 14:16:05,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-19 14:16:05,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:05,993 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:16:06,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:06,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:16:06,215 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:06,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:06,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1223682973, now seen corresponding path program 1 times [2021-11-19 14:16:06,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:06,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612082951] [2021-11-19 14:16:06,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:06,218 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:06,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:06,219 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:06,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc872fe-b1c4-40cb-a4ad-e590257e9f46/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 14:17:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:18,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 1701 conjuncts, 116 conjunts are in the unsatisfiable core [2021-11-19 14:17:18,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:17:18,552 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 14:17:19,534 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 14:17:19,534 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 22 treesize of output 29 [2021-11-19 14:17:19,672 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 14:17:19,672 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 28 treesize of output 24 [2021-11-19 14:17:29,629 INFO L354 Elim1Store]: treesize reduction 107, result has 17.7 percent of original size [2021-11-19 14:17:29,629 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 68 [2021-11-19 14:17:31,557 INFO L354 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2021-11-19 14:17:31,557 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 54 treesize of output 62 [2021-11-19 14:17:32,149 INFO L354 Elim1Store]: treesize reduction 60, result has 48.7 percent of original size [2021-11-19 14:17:32,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 51 treesize of output 98 [2021-11-19 14:17:34,684 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 124 treesize of output 120 [2021-11-19 14:17:34,872 INFO L354 Elim1Store]: treesize reduction 144, result has 23.8 percent of original size [2021-11-19 14:17:34,873 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 129 treesize of output 158 [2021-11-19 14:17:37,899 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 14:21:05,186 INFO L354 Elim1Store]: treesize reduction 54, result has 31.6 percent of original size [2021-11-19 14:21:05,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 289 treesize of output 256 [2021-11-19 14:21:05,475 INFO L354 Elim1Store]: treesize reduction 66, result has 30.5 percent of original size [2021-11-19 14:21:05,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 269 treesize of output 281