./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_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_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/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_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/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_d119be65-eee2-45b5-9183-6a06dd4b9025/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 bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:42:49,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:42:49,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:42:49,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:42:49,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:42:49,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:42:49,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:42:49,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:42:49,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:42:49,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:42:49,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:42:49,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:42:49,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:42:49,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:42:49,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:42:49,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:42:49,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:42:49,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:42:49,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:42:49,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:42:49,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:42:49,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:42:49,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:42:49,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:42:49,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:42:49,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:42:49,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:42:49,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:42:49,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:42:49,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:42:49,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:42:49,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:42:49,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:42:49,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:42:49,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:42:49,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:42:49,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:42:49,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:42:49,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:42:49,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:42:49,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:42:49,366 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 15:42:49,417 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:42:49,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:42:49,419 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:42:49,420 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:42:49,420 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:42:49,420 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:42:49,420 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:42:49,421 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:42:49,421 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:42:49,421 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:42:49,423 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:42:49,423 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:42:49,423 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:42:49,424 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:42:49,424 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:42:49,424 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:42:49,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:42:49,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:42:49,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:42:49,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:42:49,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:42:49,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:42:49,426 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:42:49,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:42:49,427 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:42:49,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:42:49,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:42:49,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:42:49,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:42:49,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:42:49,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:42:49,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:42:49,431 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:42:49,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:42:49,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:42:49,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:42:49,432 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:42:49,432 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_d119be65-eee2-45b5-9183-6a06dd4b9025/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c [2021-11-19 15:42:49,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:42:49,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:42:49,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:42:49,865 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:42:49,866 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:42:49,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2021-11-19 15:42:49,979 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/data/161fe42b0/07c5daecae154bf18d7475f4aecc7360/FLAG77b69c93c [2021-11-19 15:42:51,018 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:42:51,019 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2021-11-19 15:42:51,069 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/data/161fe42b0/07c5daecae154bf18d7475f4aecc7360/FLAG77b69c93c [2021-11-19 15:42:51,381 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/data/161fe42b0/07c5daecae154bf18d7475f4aecc7360 [2021-11-19 15:42:51,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:42:51,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:42:51,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:42:51,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:42:51,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:42:51,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:42:51" (1/1) ... [2021-11-19 15:42:51,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f5b4ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:42:51, skipping insertion in model container [2021-11-19 15:42:51,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:42:51" (1/1) ... [2021-11-19 15:42:51,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:42:51,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:42:51,918 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_d119be65-eee2-45b5-9183-6a06dd4b9025/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4497,4510] [2021-11-19 15:42:51,926 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_d119be65-eee2-45b5-9183-6a06dd4b9025/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4557,4570] [2021-11-19 15:42:51,955 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:42:51,962 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:42:53,251 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:42:53,254 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:42:53,255 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:42:53,257 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:42:53,258 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:42:53,284 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:42:53,285 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:42:53,291 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:42:53,292 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:42:53,791 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:42:53,792 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:42:53,794 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:42:53,795 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:42:53,797 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:42:53,798 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:42:53,799 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:42:53,799 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:42:53,800 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:42:53,801 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:42:53,997 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:42:54,176 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:42:54,176 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:42:54,285 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:42:54,374 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 15:42:54,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4186d48a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:42:54, skipping insertion in model container [2021-11-19 15:42:54,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:42:54,378 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:42:54,381 INFO L158 Benchmark]: Toolchain (without parser) took 2994.22ms. Allocated memory is still 123.7MB. Free memory was 79.4MB in the beginning and 46.1MB in the end (delta: 33.3MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2021-11-19 15:42:54,382 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 123.7MB. Free memory was 94.4MB in the beginning and 94.3MB in the end (delta: 26.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:42:54,383 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2989.89ms. Allocated memory is still 123.7MB. Free memory was 79.4MB in the beginning and 46.1MB in the end (delta: 33.3MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2021-11-19 15:42:54,385 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 123.7MB. Free memory was 94.4MB in the beginning and 94.3MB in the end (delta: 26.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2989.89ms. Allocated memory is still 123.7MB. Free memory was 79.4MB in the beginning and 46.1MB in the end (delta: 33.3MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6990]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/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_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/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_d119be65-eee2-45b5-9183-6a06dd4b9025/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 bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:42:56,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:42:56,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:42:56,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:42:56,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:42:56,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:42:56,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:42:56,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:42:56,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:42:56,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:42:56,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:42:57,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:42:57,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:42:57,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:42:57,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:42:57,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:42:57,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:42:57,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:42:57,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:42:57,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:42:57,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:42:57,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:42:57,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:42:57,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:42:57,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:42:57,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:42:57,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:42:57,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:42:57,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:42:57,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:42:57,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:42:57,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:42:57,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:42:57,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:42:57,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:42:57,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:42:57,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:42:57,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:42:57,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:42:57,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:42:57,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:42:57,081 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 15:42:57,117 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:42:57,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:42:57,118 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:42:57,119 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:42:57,119 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:42:57,119 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:42:57,119 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:42:57,120 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:42:57,120 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:42:57,120 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:42:57,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:42:57,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:42:57,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:42:57,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:42:57,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:42:57,123 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:42:57,123 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:42:57,123 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:42:57,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:42:57,124 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:42:57,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:42:57,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:42:57,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:42:57,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:42:57,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:42:57,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:42:57,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:42:57,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:42:57,126 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:42:57,126 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:42:57,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:42:57,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:42:57,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:42:57,127 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_d119be65-eee2-45b5-9183-6a06dd4b9025/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c [2021-11-19 15:42:57,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:42:57,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:42:57,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:42:57,587 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:42:57,588 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:42:57,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2021-11-19 15:42:57,687 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/data/1d079437b/9d87891a016246cd94fd1998d35afcb8/FLAGbafc1bb67 [2021-11-19 15:42:58,750 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:42:58,755 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2021-11-19 15:42:58,811 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/data/1d079437b/9d87891a016246cd94fd1998d35afcb8/FLAGbafc1bb67 [2021-11-19 15:42:59,099 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/data/1d079437b/9d87891a016246cd94fd1998d35afcb8 [2021-11-19 15:42:59,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:42:59,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:42:59,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:42:59,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:42:59,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:42:59,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:42:59" (1/1) ... [2021-11-19 15:42:59,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@584a076a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:42:59, skipping insertion in model container [2021-11-19 15:42:59,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:42:59" (1/1) ... [2021-11-19 15:42:59,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:42:59,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:42:59,801 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_d119be65-eee2-45b5-9183-6a06dd4b9025/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4497,4510] [2021-11-19 15:42:59,810 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_d119be65-eee2-45b5-9183-6a06dd4b9025/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4557,4570] [2021-11-19 15:42:59,844 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:42:59,853 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:43:01,259 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:01,260 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:01,261 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:01,262 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:01,263 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:01,288 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:01,289 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:01,291 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:01,292 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:01,818 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:43:01,819 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:43:01,820 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:43:01,822 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:43:01,824 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:43:01,825 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:43:01,825 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:43:01,826 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:43:01,827 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:43:01,828 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:43:02,038 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:43:02,152 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:02,152 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:02,272 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:43:02,375 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:43:02,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:43:02,449 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_d119be65-eee2-45b5-9183-6a06dd4b9025/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4497,4510] [2021-11-19 15:43:02,450 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_d119be65-eee2-45b5-9183-6a06dd4b9025/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4557,4570] [2021-11-19 15:43:02,451 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:43:02,461 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:43:02,514 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:02,515 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:02,515 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:02,523 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:02,525 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:02,540 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:02,546 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:02,551 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:02,561 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:02,636 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:43:02,637 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:43:02,638 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:43:02,639 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:43:02,640 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:43:02,640 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:43:02,641 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:43:02,641 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:43:02,642 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:43:02,643 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:43:02,667 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:43:02,734 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:02,735 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:02,765 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:43:02,822 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:43:02,837 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_d119be65-eee2-45b5-9183-6a06dd4b9025/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4497,4510] [2021-11-19 15:43:02,838 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_d119be65-eee2-45b5-9183-6a06dd4b9025/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4557,4570] [2021-11-19 15:43:02,840 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:43:02,841 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:43:02,881 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:02,881 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:02,882 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:02,882 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:02,883 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:02,891 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:02,891 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:02,892 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:02,893 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:02,933 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:43:02,934 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:43:02,934 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:43:02,935 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:43:02,936 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:43:02,937 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:43:02,938 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:43:02,938 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:43:02,939 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:43:02,940 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:43:02,964 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:43:03,049 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:03,049 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:43:03,075 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:43:03,489 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:43:03,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:03 WrapperNode [2021-11-19 15:43:03,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:43:03,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:43:03,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:43:03,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:43:03,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:03" (1/1) ... [2021-11-19 15:43:03,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:03" (1/1) ... [2021-11-19 15:43:03,834 INFO L137 Inliner]: procedures = 712, calls = 2617, calls flagged for inlining = 57, calls inlined = 4, statements flattened = 763 [2021-11-19 15:43:03,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:43:03,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:43:03,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:43:03,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:43:03,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:03" (1/1) ... [2021-11-19 15:43:03,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:03" (1/1) ... [2021-11-19 15:43:03,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:03" (1/1) ... [2021-11-19 15:43:03,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:03" (1/1) ... [2021-11-19 15:43:03,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:03" (1/1) ... [2021-11-19 15:43:03,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:03" (1/1) ... [2021-11-19 15:43:03,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:03" (1/1) ... [2021-11-19 15:43:03,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:43:03,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:43:03,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:43:03,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:43:03,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:03" (1/1) ... [2021-11-19 15:43:03,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:43:03,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:43:03,981 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:43:04,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:43:04,045 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-19 15:43:04,046 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-19 15:43:04,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:43:04,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:43:04,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 15:43:04,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 15:43:04,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 15:43:04,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 15:43:04,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:43:04,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:43:04,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 15:43:04,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:43:04,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:43:04,050 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 15:43:04,050 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 15:43:04,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 15:43:04,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 15:43:04,051 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 15:43:04,051 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 15:43:04,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:43:04,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 15:43:04,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 15:43:04,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 15:43:04,052 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 15:43:04,053 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 15:43:04,053 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_from_array [2021-11-19 15:43:04,053 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_from_array [2021-11-19 15:43:04,495 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:43:04,497 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:43:07,974 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:43:07,985 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:43:07,986 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 15:43:07,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:43:07 BoogieIcfgContainer [2021-11-19 15:43:07,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:43:07,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:43:07,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:43:07,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:43:07,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:42:59" (1/3) ... [2021-11-19 15:43:08,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbe8b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:43:08, skipping insertion in model container [2021-11-19 15:43:08,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:43:03" (2/3) ... [2021-11-19 15:43:08,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbe8b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:43:08, skipping insertion in model container [2021-11-19 15:43:08,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:43:07" (3/3) ... [2021-11-19 15:43:08,011 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_from_array_harness.i [2021-11-19 15:43:08,018 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:43:08,019 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:43:08,076 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:43:08,083 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 15:43:08,084 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:43:08,104 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 52 states have (on average 1.25) internal successors, (65), 53 states have internal predecessors, (65), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-19 15:43:08,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-19 15:43:08,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:43:08,112 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 15:43:08,112 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:43:08,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:43:08,139 INFO L85 PathProgramCache]: Analyzing trace with hash -537066619, now seen corresponding path program 1 times [2021-11-19 15:43:08,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:43:08,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968885319] [2021-11-19 15:43:08,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:43:08,161 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:43:08,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:43:08,171 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:43:08,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:43:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:43:09,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 15:43:09,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:43:09,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 15:43:09,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:43:09,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 15:43:09,394 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:43:09,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968885319] [2021-11-19 15:43:09,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [968885319] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:43:09,399 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:43:09,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 15:43:09,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832956594] [2021-11-19 15:43:09,403 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:43:09,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 15:43:09,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:43:09,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 15:43:09,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:43:09,458 INFO L87 Difference]: Start difference. First operand has 75 states, 52 states have (on average 1.25) internal successors, (65), 53 states have internal predecessors, (65), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 15:43:09,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:43:09,518 INFO L93 Difference]: Finished difference Result 145 states and 195 transitions. [2021-11-19 15:43:09,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 15:43:09,521 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2021-11-19 15:43:09,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:43:09,532 INFO L225 Difference]: With dead ends: 145 [2021-11-19 15:43:09,532 INFO L226 Difference]: Without dead ends: 68 [2021-11-19 15:43:09,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:43:09,543 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:43:09,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:43:09,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-19 15:43:09,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-11-19 15:43:09,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-19 15:43:09,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2021-11-19 15:43:09,612 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 84 transitions. Word has length 33 [2021-11-19 15:43:09,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:43:09,613 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 84 transitions. [2021-11-19 15:43:09,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 15:43:09,614 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 84 transitions. [2021-11-19 15:43:09,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-19 15:43:09,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:43:09,618 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 15:43:09,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:43:09,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:43:09,841 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:43:09,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:43:09,842 INFO L85 PathProgramCache]: Analyzing trace with hash 365093061, now seen corresponding path program 1 times [2021-11-19 15:43:09,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:43:09,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882749246] [2021-11-19 15:43:09,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:43:09,847 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:43:09,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:43:09,850 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:43:09,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:43:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:43:10,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:43:10,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:43:11,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:43:11,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:43:11,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:43:11,381 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:43:11,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882749246] [2021-11-19 15:43:11,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882749246] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:43:11,388 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:43:11,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 15:43:11,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683134656] [2021-11-19 15:43:11,389 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:43:11,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:43:11,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:43:11,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:43:11,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:43:11,393 INFO L87 Difference]: Start difference. First operand 68 states and 84 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 15:43:13,430 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:43:13,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:43:13,578 INFO L93 Difference]: Finished difference Result 123 states and 152 transitions. [2021-11-19 15:43:13,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:43:13,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2021-11-19 15:43:13,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:43:13,583 INFO L225 Difference]: With dead ends: 123 [2021-11-19 15:43:13,583 INFO L226 Difference]: Without dead ends: 71 [2021-11-19 15:43:13,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:43:13,586 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 22 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:43:13,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 227 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 15:43:13,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-19 15:43:13,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-11-19 15:43:13,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 48 states have (on average 1.1875) internal successors, (57), 50 states have internal predecessors, (57), 15 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2021-11-19 15:43:13,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2021-11-19 15:43:13,611 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 33 [2021-11-19 15:43:13,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:43:13,612 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2021-11-19 15:43:13,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 15:43:13,613 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2021-11-19 15:43:13,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-19 15:43:13,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:43:13,615 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 15:43:13,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:43:13,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:43:13,832 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:43:13,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:43:13,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1309209872, now seen corresponding path program 1 times [2021-11-19 15:43:13,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:43:13,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761751695] [2021-11-19 15:43:13,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:43:13,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:43:13,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:43:13,840 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:43:13,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:43:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:43:14,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 1361 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:43:14,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:43:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:43:15,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:43:15,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:43:15,376 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:43:15,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761751695] [2021-11-19 15:43:15,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761751695] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:43:15,376 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:43:15,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 12 [2021-11-19 15:43:15,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524667821] [2021-11-19 15:43:15,377 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:43:15,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 15:43:15,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:43:15,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 15:43:15,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:43:15,379 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand has 12 states, 10 states have (on average 3.0) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 15:43:15,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:43:15,622 INFO L93 Difference]: Finished difference Result 83 states and 100 transitions. [2021-11-19 15:43:15,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 15:43:15,623 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.0) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 39 [2021-11-19 15:43:15,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:43:15,625 INFO L225 Difference]: With dead ends: 83 [2021-11-19 15:43:15,626 INFO L226 Difference]: Without dead ends: 81 [2021-11-19 15:43:15,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-19 15:43:15,627 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 23 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:43:15,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 703 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:43:15,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-19 15:43:15,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2021-11-19 15:43:15,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 57 states have internal predecessors, (63), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2021-11-19 15:43:15,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 97 transitions. [2021-11-19 15:43:15,642 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 97 transitions. Word has length 39 [2021-11-19 15:43:15,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:43:15,645 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 97 transitions. [2021-11-19 15:43:15,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.0) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 15:43:15,646 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 97 transitions. [2021-11-19 15:43:15,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 15:43:15,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:43:15,649 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 15:43:15,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 15:43:15,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:43:15,860 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:43:15,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:43:15,860 INFO L85 PathProgramCache]: Analyzing trace with hash -853000232, now seen corresponding path program 1 times [2021-11-19 15:43:15,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:43:15,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111578077] [2021-11-19 15:43:15,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:43:15,863 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:43:15,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:43:15,864 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:43:15,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:43:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:43:16,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:43:16,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:43:17,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:43:17,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:43:18,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:43:18,173 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:43:18,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111578077] [2021-11-19 15:43:18,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111578077] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:43:18,173 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:43:18,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-19 15:43:18,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164860962] [2021-11-19 15:43:18,174 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:43:18,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:43:18,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:43:18,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:43:18,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:43:18,176 INFO L87 Difference]: Start difference. First operand 80 states and 97 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 15:43:20,409 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:43:22,425 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:43:23,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:43:23,285 INFO L93 Difference]: Finished difference Result 157 states and 195 transitions. [2021-11-19 15:43:23,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:43:23,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2021-11-19 15:43:23,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:43:23,290 INFO L225 Difference]: With dead ends: 157 [2021-11-19 15:43:23,290 INFO L226 Difference]: Without dead ends: 98 [2021-11-19 15:43:23,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:43:23,292 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 43 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:43:23,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 413 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 2 Unknown, 25 Unchecked, 4.9s Time] [2021-11-19 15:43:23,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-19 15:43:23,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 85. [2021-11-19 15:43:23,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 62 states have internal predecessors, (70), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2021-11-19 15:43:23,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 104 transitions. [2021-11-19 15:43:23,308 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 104 transitions. Word has length 43 [2021-11-19 15:43:23,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:43:23,309 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 104 transitions. [2021-11-19 15:43:23,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 15:43:23,309 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 104 transitions. [2021-11-19 15:43:23,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 15:43:23,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:43:23,312 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 15:43:23,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-19 15:43:23,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:43:23,516 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:43:23,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:43:23,516 INFO L85 PathProgramCache]: Analyzing trace with hash -594834794, now seen corresponding path program 1 times [2021-11-19 15:43:23,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:43:23,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575189851] [2021-11-19 15:43:23,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:43:23,518 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:43:23,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:43:23,519 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:43:23,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:43:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:43:28,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 1367 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 15:43:28,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:43:28,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:43:28,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 136 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 165 [2021-11-19 15:43:39,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 15:43:39,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:43:47,413 WARN L227 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 719 DAG size of output: 92 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 15:43:47,414 INFO L354 Elim1Store]: treesize reduction 8872, result has 1.9 percent of original size [2021-11-19 15:43:47,415 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 16 case distinctions, treesize of input 181 treesize of output 241 [2021-11-19 15:43:47,446 INFO L354 Elim1Store]: treesize reduction 1410, result has 0.1 percent of original size [2021-11-19 15:43:47,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 241 treesize of output 99 [2021-11-19 15:43:47,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:43:47,875 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:43:47,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575189851] [2021-11-19 15:43:47,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575189851] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:43:47,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:43:47,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 21 [2021-11-19 15:43:47,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616794940] [2021-11-19 15:43:47,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:43:47,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:43:47,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:43:47,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:43:47,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2021-11-19 15:43:47,878 INFO L87 Difference]: Start difference. First operand 85 states and 104 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 15:43:50,079 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:43:52,101 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:43:54,116 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:43:56,395 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:43:58,409 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:43:59,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:43:59,982 INFO L93 Difference]: Finished difference Result 174 states and 217 transitions. [2021-11-19 15:43:59,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:43:59,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2021-11-19 15:43:59,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:43:59,988 INFO L225 Difference]: With dead ends: 174 [2021-11-19 15:43:59,989 INFO L226 Difference]: Without dead ends: 105 [2021-11-19 15:43:59,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2021-11-19 15:43:59,991 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 78 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:43:59,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 331 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 83 Invalid, 4 Unknown, 0 Unchecked, 11.4s Time] [2021-11-19 15:43:59,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-19 15:44:00,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 100. [2021-11-19 15:44:00,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 77 states have internal predecessors, (84), 17 states have call successors, (17), 7 states have call predecessors, (17), 11 states have return successors, (24), 15 states have call predecessors, (24), 16 states have call successors, (24) [2021-11-19 15:44:00,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 125 transitions. [2021-11-19 15:44:00,014 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 125 transitions. Word has length 43 [2021-11-19 15:44:00,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:44:00,015 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 125 transitions. [2021-11-19 15:44:00,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 15:44:00,016 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 125 transitions. [2021-11-19 15:44:00,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 15:44:00,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:44:00,019 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 15:44:00,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:44:00,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:44:00,232 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:44:00,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:44:00,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1853619162, now seen corresponding path program 1 times [2021-11-19 15:44:00,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:44:00,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390127304] [2021-11-19 15:44:00,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:44:00,235 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:44:00,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:44:00,236 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:44:00,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:44:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:44:01,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 1368 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:44:01,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:44:01,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:44:01,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:44:01,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:44:01,290 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:44:01,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390127304] [2021-11-19 15:44:01,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390127304] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:44:01,290 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:44:01,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 15:44:01,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226899923] [2021-11-19 15:44:01,291 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:44:01,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:44:01,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:44:01,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:44:01,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:44:01,292 INFO L87 Difference]: Start difference. First operand 100 states and 125 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 15:44:01,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:44:01,381 INFO L93 Difference]: Finished difference Result 194 states and 244 transitions. [2021-11-19 15:44:01,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:44:01,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2021-11-19 15:44:01,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:44:01,384 INFO L225 Difference]: With dead ends: 194 [2021-11-19 15:44:01,384 INFO L226 Difference]: Without dead ends: 112 [2021-11-19 15:44:01,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:44:01,386 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 28 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:44:01,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 275 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:44:01,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-19 15:44:01,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 100. [2021-11-19 15:44:01,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 77 states have internal predecessors, (83), 17 states have call successors, (17), 7 states have call predecessors, (17), 11 states have return successors, (24), 15 states have call predecessors, (24), 16 states have call successors, (24) [2021-11-19 15:44:01,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 124 transitions. [2021-11-19 15:44:01,404 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 124 transitions. Word has length 43 [2021-11-19 15:44:01,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:44:01,404 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 124 transitions. [2021-11-19 15:44:01,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 15:44:01,405 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 124 transitions. [2021-11-19 15:44:01,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 15:44:01,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:44:01,408 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 15:44:01,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:44:01,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:44:01,631 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:44:01,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:44:01,632 INFO L85 PathProgramCache]: Analyzing trace with hash 573755484, now seen corresponding path program 1 times [2021-11-19 15:44:01,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:44:01,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577514099] [2021-11-19 15:44:01,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:44:01,635 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:44:01,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:44:01,636 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:44:01,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 15:44:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:44:12,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-19 15:44:12,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:44:12,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:12,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:13,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:13,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:13,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:13,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:13,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:13,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:13,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:13,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:13,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:13,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:13,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:13,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:13,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:13,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:13,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:13,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:13,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:13,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:13,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:44:13,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 136 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 162 [2021-11-19 15:44:25,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 15:44:25,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:44:33,622 INFO L354 Elim1Store]: treesize reduction 9046, result has 0.0 percent of original size [2021-11-19 15:44:33,622 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 16 case distinctions, treesize of input 240 treesize of output 1 [2021-11-19 15:44:33,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:44:33,807 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:44:33,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577514099] [2021-11-19 15:44:33,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [577514099] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:44:33,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:44:33,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 21 [2021-11-19 15:44:33,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794151235] [2021-11-19 15:44:33,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:44:33,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:44:33,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:44:33,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:44:33,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2021-11-19 15:44:33,809 INFO L87 Difference]: Start difference. First operand 100 states and 124 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 15:44:36,082 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:44:38,100 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:44:40,121 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:44:44,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:44:44,925 INFO L93 Difference]: Finished difference Result 189 states and 232 transitions. [2021-11-19 15:44:44,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 15:44:44,929 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2021-11-19 15:44:44,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:44:44,931 INFO L225 Difference]: With dead ends: 189 [2021-11-19 15:44:44,931 INFO L226 Difference]: Without dead ends: 112 [2021-11-19 15:44:44,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2021-11-19 15:44:44,933 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 35 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:44:44,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 313 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 3 Unknown, 0 Unchecked, 8.8s Time] [2021-11-19 15:44:44,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-19 15:44:44,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 104. [2021-11-19 15:44:44,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 81 states have internal predecessors, (88), 17 states have call successors, (17), 7 states have call predecessors, (17), 11 states have return successors, (24), 15 states have call predecessors, (24), 16 states have call successors, (24) [2021-11-19 15:44:44,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 129 transitions. [2021-11-19 15:44:44,952 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 129 transitions. Word has length 43 [2021-11-19 15:44:44,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:44:44,953 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 129 transitions. [2021-11-19 15:44:44,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 15:44:44,953 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 129 transitions. [2021-11-19 15:44:44,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 15:44:44,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:44:44,956 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 15:44:45,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:44:45,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:44:45,172 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:44:45,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:44:45,172 INFO L85 PathProgramCache]: Analyzing trace with hash 831920922, now seen corresponding path program 1 times [2021-11-19 15:44:45,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:44:45,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217498375] [2021-11-19 15:44:45,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:44:45,175 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:44:45,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:44:45,176 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:44:45,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:44:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:44:45,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 1362 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:44:45,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:44:46,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:44:46,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:44:47,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:44:47,287 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:44:47,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217498375] [2021-11-19 15:44:47,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217498375] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:44:47,287 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:44:47,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-19 15:44:47,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206241937] [2021-11-19 15:44:47,287 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:44:47,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:44:47,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:44:47,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:44:47,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:44:47,289 INFO L87 Difference]: Start difference. First operand 104 states and 129 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 15:44:49,490 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:44:51,505 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:44:53,519 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:44:54,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:44:54,728 INFO L93 Difference]: Finished difference Result 186 states and 229 transitions. [2021-11-19 15:44:54,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:44:54,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2021-11-19 15:44:54,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:44:54,733 INFO L225 Difference]: With dead ends: 186 [2021-11-19 15:44:54,733 INFO L226 Difference]: Without dead ends: 105 [2021-11-19 15:44:54,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:44:54,734 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 26 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:44:54,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 380 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 3 Unknown, 0 Unchecked, 7.0s Time] [2021-11-19 15:44:54,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-19 15:44:54,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 102. [2021-11-19 15:44:54,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 73 states have (on average 1.1506849315068493) internal successors, (84), 79 states have internal predecessors, (84), 17 states have call successors, (17), 7 states have call predecessors, (17), 11 states have return successors, (24), 15 states have call predecessors, (24), 16 states have call successors, (24) [2021-11-19 15:44:54,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 125 transitions. [2021-11-19 15:44:54,752 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 125 transitions. Word has length 43 [2021-11-19 15:44:54,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:44:54,753 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 125 transitions. [2021-11-19 15:44:54,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 15:44:54,753 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 125 transitions. [2021-11-19 15:44:54,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 15:44:54,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:44:54,762 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 15:44:54,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:44:54,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:44:54,962 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:44:54,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:44:54,963 INFO L85 PathProgramCache]: Analyzing trace with hash -375980076, now seen corresponding path program 1 times [2021-11-19 15:44:54,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:44:54,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952974239] [2021-11-19 15:44:54,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:44:54,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:44:54,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:44:54,966 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:44:54,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 15:45:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:45:14,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 1367 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 15:45:14,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:45:15,045 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:15,047 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 494 [2021-11-19 15:45:15,055 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:15,057 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1103 [2021-11-19 15:45:15,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 1103 treesize of output 1072 [2021-11-19 15:45:15,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,688 INFO L244 Elim1Store]: Index analysis took 302 ms [2021-11-19 15:45:15,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 153 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 161 [2021-11-19 15:45:15,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 119 [2021-11-19 15:45:15,805 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:15,807 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 406 [2021-11-19 15:45:15,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 406 treesize of output 387 [2021-11-19 15:45:15,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:15,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:16,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:16,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:16,003 INFO L244 Elim1Store]: Index analysis took 107 ms [2021-11-19 15:45:16,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 45 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 94 [2021-11-19 15:45:17,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:45:17,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:45:30,323 WARN L227 SmtUtils]: Spent 11.83s on a formula simplification. DAG size of input: 207 DAG size of output: 10 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 15:45:30,324 INFO L354 Elim1Store]: treesize reduction 1526, result has 0.7 percent of original size [2021-11-19 15:45:30,324 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 8 case distinctions, treesize of input 420 treesize of output 332 [2021-11-19 15:45:32,027 INFO L354 Elim1Store]: treesize reduction 1526, result has 0.7 percent of original size [2021-11-19 15:45:32,028 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 8 case distinctions, treesize of input 332 treesize of output 244 [2021-11-19 15:45:32,825 INFO L354 Elim1Store]: treesize reduction 1602, result has 0.6 percent of original size [2021-11-19 15:45:32,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 244 treesize of output 151 [2021-11-19 15:45:33,136 INFO L354 Elim1Store]: treesize reduction 1602, result has 0.6 percent of original size [2021-11-19 15:45:33,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 147 treesize of output 54 [2021-11-19 15:45:33,140 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 50 treesize of output 46 [2021-11-19 15:45:33,144 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 46 treesize of output 42 [2021-11-19 15:45:33,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 54 treesize of output 46 [2021-11-19 15:45:33,159 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-19 15:45:33,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 29 [2021-11-19 15:45:33,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:45:33,297 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:45:33,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952974239] [2021-11-19 15:45:33,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952974239] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:45:33,297 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:45:33,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 8] imperfect sequences [] total 16 [2021-11-19 15:45:33,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113486808] [2021-11-19 15:45:33,297 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:45:33,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 15:45:33,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:45:33,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 15:45:33,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-19 15:45:33,299 INFO L87 Difference]: Start difference. First operand 102 states and 125 transitions. Second operand has 16 states, 14 states have (on average 3.357142857142857) internal successors, (47), 15 states have internal predecessors, (47), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-19 15:45:34,906 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:45:36,927 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:45:38,944 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:45:40,273 WARN L515 Checker$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 15:45:41,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:45:43,743 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:45:46,170 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:45:48,572 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:45:50,596 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:45:52,621 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:45:54,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:45:54,675 INFO L93 Difference]: Finished difference Result 236 states and 284 transitions. [2021-11-19 15:45:54,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 15:45:54,678 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.357142857142857) internal successors, (47), 15 states have internal predecessors, (47), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 43 [2021-11-19 15:45:54,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:45:54,680 INFO L225 Difference]: With dead ends: 236 [2021-11-19 15:45:54,680 INFO L226 Difference]: Without dead ends: 144 [2021-11-19 15:45:54,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2021-11-19 15:45:54,681 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 96 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 20.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:45:54,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 812 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 5 Unknown, 123 Unchecked, 20.1s Time] [2021-11-19 15:45:54,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-19 15:45:54,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 122. [2021-11-19 15:45:54,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 93 states have (on average 1.1935483870967742) internal successors, (111), 98 states have internal predecessors, (111), 17 states have call successors, (17), 8 states have call predecessors, (17), 11 states have return successors, (22), 15 states have call predecessors, (22), 16 states have call successors, (22) [2021-11-19 15:45:54,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 150 transitions. [2021-11-19 15:45:54,694 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 150 transitions. Word has length 43 [2021-11-19 15:45:54,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:45:54,694 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 150 transitions. [2021-11-19 15:45:54,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.357142857142857) internal successors, (47), 15 states have internal predecessors, (47), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-19 15:45:54,695 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 150 transitions. [2021-11-19 15:45:54,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 15:45:54,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:45:54,696 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 15:45:54,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 15:45:54,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:45:54,911 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:45:54,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:45:54,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1655843754, now seen corresponding path program 1 times [2021-11-19 15:45:54,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:45:54,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055385745] [2021-11-19 15:45:54,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:45:54,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:45:54,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:45:54,914 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:45:54,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 15:46:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:09,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 1364 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 15:46:09,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:09,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:09,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:10,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 136 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 163 [2021-11-19 15:46:19,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 15:46:19,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:27,421 WARN L227 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 719 DAG size of output: 92 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 15:46:27,422 INFO L354 Elim1Store]: treesize reduction 8872, result has 1.9 percent of original size [2021-11-19 15:46:27,422 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 16 case distinctions, treesize of input 178 treesize of output 238 [2021-11-19 15:46:27,451 INFO L354 Elim1Store]: treesize reduction 1410, result has 0.1 percent of original size [2021-11-19 15:46:27,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 238 treesize of output 98 [2021-11-19 15:46:27,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:46:27,811 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:27,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055385745] [2021-11-19 15:46:27,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055385745] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:46:27,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:46:27,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 23 [2021-11-19 15:46:27,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90474552] [2021-11-19 15:46:27,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:27,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:46:27,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:27,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:46:27,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2021-11-19 15:46:27,813 INFO L87 Difference]: Start difference. First operand 122 states and 150 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 15:46:30,039 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:46:32,606 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:46:34,625 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:46:36,641 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:46:38,661 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:46:40,681 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:46:42,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:46:44,715 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:46:46,736 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:46:49,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:49,423 INFO L93 Difference]: Finished difference Result 225 states and 272 transitions. [2021-11-19 15:46:49,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 15:46:49,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2021-11-19 15:46:49,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:49,426 INFO L225 Difference]: With dead ends: 225 [2021-11-19 15:46:49,427 INFO L226 Difference]: Without dead ends: 132 [2021-11-19 15:46:49,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2021-11-19 15:46:49,429 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 64 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 2 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:46:49,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 484 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 160 Invalid, 9 Unknown, 0 Unchecked, 20.8s Time] [2021-11-19 15:46:49,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-19 15:46:49,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 108. [2021-11-19 15:46:49,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 80 states have (on average 1.1625) internal successors, (93), 84 states have internal predecessors, (93), 17 states have call successors, (17), 8 states have call predecessors, (17), 10 states have return successors, (20), 15 states have call predecessors, (20), 16 states have call successors, (20) [2021-11-19 15:46:49,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 130 transitions. [2021-11-19 15:46:49,439 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 130 transitions. Word has length 43 [2021-11-19 15:46:49,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:49,440 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 130 transitions. [2021-11-19 15:46:49,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 15:46:49,440 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 130 transitions. [2021-11-19 15:46:49,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-19 15:46:49,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:49,441 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 15:46:49,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:49,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:49,664 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:49,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:49,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2043381215, now seen corresponding path program 1 times [2021-11-19 15:46:49,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:49,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240185784] [2021-11-19 15:46:49,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:49,666 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:49,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:49,667 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:49,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 15:46:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:50,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 1369 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 15:46:50,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:50,697 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:46:50,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:51,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:46:51,114 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:51,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240185784] [2021-11-19 15:46:51,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240185784] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:51,114 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:51,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 14 [2021-11-19 15:46:51,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710136417] [2021-11-19 15:46:51,114 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:51,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 15:46:51,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:51,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 15:46:51,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-19 15:46:51,116 INFO L87 Difference]: Start difference. First operand 108 states and 130 transitions. Second operand has 14 states, 12 states have (on average 3.0) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 15:46:51,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:51,665 INFO L93 Difference]: Finished difference Result 130 states and 154 transitions. [2021-11-19 15:46:51,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 15:46:51,666 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.0) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 45 [2021-11-19 15:46:51,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:51,668 INFO L225 Difference]: With dead ends: 130 [2021-11-19 15:46:51,668 INFO L226 Difference]: Without dead ends: 128 [2021-11-19 15:46:51,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-11-19 15:46:51,669 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 29 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:46:51,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 929 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:46:51,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-19 15:46:51,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 114. [2021-11-19 15:46:51,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 85 states have (on average 1.1529411764705881) internal successors, (98), 90 states have internal predecessors, (98), 17 states have call successors, (17), 8 states have call predecessors, (17), 11 states have return successors, (23), 15 states have call predecessors, (23), 16 states have call successors, (23) [2021-11-19 15:46:51,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 138 transitions. [2021-11-19 15:46:51,687 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 138 transitions. Word has length 45 [2021-11-19 15:46:51,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:51,688 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 138 transitions. [2021-11-19 15:46:51,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.0) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 15:46:51,688 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 138 transitions. [2021-11-19 15:46:51,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-19 15:46:51,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:51,690 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 15:46:51,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:51,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:51,904 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:51,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:51,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1342316637, now seen corresponding path program 1 times [2021-11-19 15:46:51,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:51,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896184845] [2021-11-19 15:46:51,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:51,906 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:51,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:51,907 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:51,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 15:47:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:02,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-19 15:47:02,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:02,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 211 treesize of output 123 [2021-11-19 15:47:02,765 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:47:02,767 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 407 [2021-11-19 15:47:02,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 407 treesize of output 388 [2021-11-19 15:47:02,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:02,968 INFO L244 Elim1Store]: Index analysis took 110 ms [2021-11-19 15:47:02,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 45 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 95 [2021-11-19 15:47:05,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:47:05,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:09,193 INFO L354 Elim1Store]: treesize reduction 1526, result has 0.7 percent of original size [2021-11-19 15:47:09,193 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 8 case distinctions, treesize of input 211 treesize of output 123 [2021-11-19 15:47:09,532 INFO L354 Elim1Store]: treesize reduction 1602, result has 0.6 percent of original size [2021-11-19 15:47:09,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 123 treesize of output 30 [2021-11-19 15:47:09,538 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 26 treesize of output 22 [2021-11-19 15:47:09,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 34 treesize of output 26 [2021-11-19 15:47:09,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:47:09,769 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:09,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896184845] [2021-11-19 15:47:09,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896184845] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:09,769 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:09,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20, 18] imperfect sequences [] total 31 [2021-11-19 15:47:09,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841153738] [2021-11-19 15:47:09,769 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:09,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-19 15:47:09,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:09,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-19 15:47:09,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=852, Unknown=0, NotChecked=0, Total=930 [2021-11-19 15:47:09,770 INFO L87 Difference]: Start difference. First operand 114 states and 138 transitions. Second operand has 31 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 24 states have internal predecessors, (53), 7 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-19 15:47:12,361 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:47:16,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:16,763 INFO L93 Difference]: Finished difference Result 174 states and 199 transitions. [2021-11-19 15:47:16,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-19 15:47:16,764 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 24 states have internal predecessors, (53), 7 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 45 [2021-11-19 15:47:16,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:16,766 INFO L225 Difference]: With dead ends: 174 [2021-11-19 15:47:16,766 INFO L226 Difference]: Without dead ends: 167 [2021-11-19 15:47:16,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=226, Invalid=2324, Unknown=0, NotChecked=0, Total=2550 [2021-11-19 15:47:16,769 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 86 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 305 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:16,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 1667 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 398 Invalid, 1 Unknown, 305 Unchecked, 3.7s Time] [2021-11-19 15:47:16,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-19 15:47:16,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 127. [2021-11-19 15:47:16,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 98 states have (on average 1.163265306122449) internal successors, (114), 102 states have internal predecessors, (114), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (20), 15 states have call predecessors, (20), 16 states have call successors, (20) [2021-11-19 15:47:16,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 151 transitions. [2021-11-19 15:47:16,781 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 151 transitions. Word has length 45 [2021-11-19 15:47:16,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:16,782 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 151 transitions. [2021-11-19 15:47:16,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 24 states have internal predecessors, (53), 7 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-19 15:47:16,783 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 151 transitions. [2021-11-19 15:47:16,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-19 15:47:16,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:16,784 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 15:47:16,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:16,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:47:17,000 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:17,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:17,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1476330143, now seen corresponding path program 1 times [2021-11-19 15:47:17,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:17,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472095810] [2021-11-19 15:47:17,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:17,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:17,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:17,003 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:17,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 15:47:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:24,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 15:47:24,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:24,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:24,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:24,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:24,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:24,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:47:25,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 136 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 163 [2021-11-19 15:47:34,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 15:47:34,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:42,510 WARN L227 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 719 DAG size of output: 92 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 15:47:42,511 INFO L354 Elim1Store]: treesize reduction 8872, result has 1.9 percent of original size [2021-11-19 15:47:42,511 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 16 case distinctions, treesize of input 180 treesize of output 240 [2021-11-19 15:47:42,537 INFO L354 Elim1Store]: treesize reduction 1410, result has 0.1 percent of original size [2021-11-19 15:47:42,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 240 treesize of output 98 [2021-11-19 15:47:42,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:47:42,857 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:42,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472095810] [2021-11-19 15:47:42,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1472095810] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:42,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:47:42,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 21 [2021-11-19 15:47:42,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044273786] [2021-11-19 15:47:42,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:42,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:47:42,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:42,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:47:42,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2021-11-19 15:47:42,861 INFO L87 Difference]: Start difference. First operand 127 states and 151 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 15:47:45,059 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:47:47,083 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:47:48,467 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:47:50,146 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:47:51,741 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:47:53,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:53,600 INFO L93 Difference]: Finished difference Result 216 states and 254 transitions. [2021-11-19 15:47:53,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:47:53,606 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 45 [2021-11-19 15:47:53,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:53,607 INFO L225 Difference]: With dead ends: 216 [2021-11-19 15:47:53,607 INFO L226 Difference]: Without dead ends: 131 [2021-11-19 15:47:53,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2021-11-19 15:47:53,609 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 43 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:53,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 362 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 97 Invalid, 2 Unknown, 0 Unchecked, 10.0s Time] [2021-11-19 15:47:53,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-19 15:47:53,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 107. [2021-11-19 15:47:53,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 81 states have (on average 1.1481481481481481) internal successors, (93), 83 states have internal predecessors, (93), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-19 15:47:53,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions. [2021-11-19 15:47:53,618 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 45 [2021-11-19 15:47:53,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:53,618 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 124 transitions. [2021-11-19 15:47:53,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 15:47:53,619 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions. [2021-11-19 15:47:53,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-19 15:47:53,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:53,620 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 15:47:53,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:53,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:47:53,827 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:53,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:53,828 INFO L85 PathProgramCache]: Analyzing trace with hash 316076503, now seen corresponding path program 1 times [2021-11-19 15:47:53,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:53,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746321646] [2021-11-19 15:47:53,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:53,830 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:53,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:53,830 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:53,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 15:47:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:54,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:47:54,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:54,799 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 15:47:54,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:55,021 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 15:47:55,021 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:55,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746321646] [2021-11-19 15:47:55,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746321646] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:55,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:47:55,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 15:47:55,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697753180] [2021-11-19 15:47:55,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:55,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:47:55,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:55,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:47:55,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:47:55,023 INFO L87 Difference]: Start difference. First operand 107 states and 124 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 15:47:55,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:55,202 INFO L93 Difference]: Finished difference Result 189 states and 223 transitions. [2021-11-19 15:47:55,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 15:47:55,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2021-11-19 15:47:55,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:55,205 INFO L225 Difference]: With dead ends: 189 [2021-11-19 15:47:55,205 INFO L226 Difference]: Without dead ends: 124 [2021-11-19 15:47:55,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:47:55,207 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 33 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:55,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 338 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:47:55,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-19 15:47:55,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 109. [2021-11-19 15:47:55,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 83 states have (on average 1.1204819277108433) internal successors, (93), 85 states have internal predecessors, (93), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-19 15:47:55,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 124 transitions. [2021-11-19 15:47:55,216 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 124 transitions. Word has length 54 [2021-11-19 15:47:55,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:55,217 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 124 transitions. [2021-11-19 15:47:55,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 15:47:55,217 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 124 transitions. [2021-11-19 15:47:55,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-19 15:47:55,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:55,219 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 15:47:55,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:55,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:47:55,428 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:55,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:55,428 INFO L85 PathProgramCache]: Analyzing trace with hash 691123421, now seen corresponding path program 1 times [2021-11-19 15:47:55,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:55,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959601234] [2021-11-19 15:47:55,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:55,431 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:55,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:55,432 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:55,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 15:47:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:56,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:47:56,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:56,537 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 15:47:56,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:56,819 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 15:47:56,820 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:56,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959601234] [2021-11-19 15:47:56,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959601234] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:56,820 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:56,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 15:47:56,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796223118] [2021-11-19 15:47:56,821 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:56,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:47:56,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:56,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:47:56,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:47:56,822 INFO L87 Difference]: Start difference. First operand 109 states and 124 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 15:47:56,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:56,988 INFO L93 Difference]: Finished difference Result 141 states and 160 transitions. [2021-11-19 15:47:56,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:47:56,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2021-11-19 15:47:56,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:56,992 INFO L225 Difference]: With dead ends: 141 [2021-11-19 15:47:56,992 INFO L226 Difference]: Without dead ends: 109 [2021-11-19 15:47:56,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:47:56,993 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 29 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:56,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 269 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:47:56,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-19 15:47:57,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-19 15:47:57,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 83 states have (on average 1.108433734939759) internal successors, (92), 85 states have internal predecessors, (92), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-19 15:47:57,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 123 transitions. [2021-11-19 15:47:57,002 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 123 transitions. Word has length 54 [2021-11-19 15:47:57,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:57,003 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 123 transitions. [2021-11-19 15:47:57,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 15:47:57,003 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 123 transitions. [2021-11-19 15:47:57,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-19 15:47:57,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:57,005 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 15:47:57,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:57,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:47:57,212 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:57,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:57,212 INFO L85 PathProgramCache]: Analyzing trace with hash -324954328, now seen corresponding path program 1 times [2021-11-19 15:47:57,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:57,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852085767] [2021-11-19 15:47:57,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:57,214 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:57,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:57,214 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:57,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 15:47:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:58,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 1426 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-19 15:47:58,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:01,279 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-19 15:48:01,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 67 [2021-11-19 15:48:01,287 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-19 15:48:01,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 26 [2021-11-19 15:48:01,515 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:48:01,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:04,490 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-19 15:48:04,490 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 64 treesize of output 1 [2021-11-19 15:48:05,819 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-11-19 15:48:05,819 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 72 treesize of output 1 [2021-11-19 15:48:08,558 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:48:08,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-19 15:48:08,603 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-19 15:48:08,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-19 15:48:08,756 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 15:48:08,756 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:48:08,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852085767] [2021-11-19 15:48:08,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852085767] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:48:08,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [857753311] [2021-11-19 15:48:08,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:48:08,757 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:48:08,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:48:08,765 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:48:08,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-19 15:48:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:48:14,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 1426 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:48:14,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:14,974 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-19 15:48:14,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:15,461 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 15:48:15,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [857753311] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:48:15,462 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:48:15,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [21, 18] total 39 [2021-11-19 15:48:15,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93559457] [2021-11-19 15:48:15,462 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:48:15,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 15:48:15,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:48:15,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 15:48:15,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1366, Unknown=0, NotChecked=0, Total=1482 [2021-11-19 15:48:15,463 INFO L87 Difference]: Start difference. First operand 109 states and 123 transitions. Second operand has 12 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-19 15:48:15,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:48:15,761 INFO L93 Difference]: Finished difference Result 121 states and 135 transitions. [2021-11-19 15:48:15,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 15:48:15,762 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 60 [2021-11-19 15:48:15,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:48:15,763 INFO L225 Difference]: With dead ends: 121 [2021-11-19 15:48:15,763 INFO L226 Difference]: Without dead ends: 119 [2021-11-19 15:48:15,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 196 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=128, Invalid=1512, Unknown=0, NotChecked=0, Total=1640 [2021-11-19 15:48:15,764 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 23 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:48:15,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 709 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:48:15,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-19 15:48:15,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2021-11-19 15:48:15,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 89 states have (on average 1.101123595505618) internal successors, (98), 92 states have internal predecessors, (98), 17 states have call successors, (17), 10 states have call predecessors, (17), 11 states have return successors, (17), 15 states have call predecessors, (17), 16 states have call successors, (17) [2021-11-19 15:48:15,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 132 transitions. [2021-11-19 15:48:15,782 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 132 transitions. Word has length 60 [2021-11-19 15:48:15,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:48:15,783 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 132 transitions. [2021-11-19 15:48:15,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-19 15:48:15,783 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 132 transitions. [2021-11-19 15:48:15,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 15:48:15,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:48:15,784 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 15:48:15,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-11-19 15:48:16,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 15:48:16,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:48:16,185 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:48:16,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:48:16,185 INFO L85 PathProgramCache]: Analyzing trace with hash 2057101486, now seen corresponding path program 1 times [2021-11-19 15:48:16,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:48:16,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68619585] [2021-11-19 15:48:16,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:48:16,187 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:48:16,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:48:16,188 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:48:16,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 15:48:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:48:17,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 1432 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-19 15:48:17,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:48:19,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:21,572 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-19 15:48:21,572 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 64 treesize of output 1 [2021-11-19 15:48:22,665 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-11-19 15:48:22,665 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 72 treesize of output 1 [2021-11-19 15:48:25,246 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:48:25,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-19 15:48:25,277 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-19 15:48:25,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-19 15:48:25,372 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 15:48:25,372 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:48:25,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68619585] [2021-11-19 15:48:25,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68619585] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:48:25,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1346891852] [2021-11-19 15:48:25,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:48:25,373 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:48:25,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:48:25,374 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:48:25,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-19 15:48:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:48:30,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 1432 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-19 15:48:30,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:30,231 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 13 treesize of output 9 [2021-11-19 15:48:30,241 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 13 treesize of output 9 [2021-11-19 15:48:36,940 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:48:36,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:38,433 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 15:48:38,434 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 147 treesize of output 1 [2021-11-19 15:48:40,189 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 15:48:40,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1346891852] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:48:40,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830459663] [2021-11-19 15:48:40,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:48:40,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:48:40,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:48:40,191 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:48:40,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d119be65-eee2-45b5-9183-6a06dd4b9025/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-19 15:48:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:48:41,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 1432 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 15:48:41,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:41,643 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:48:41,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 494 [2021-11-19 15:48:41,653 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:48:41,655 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1103 [2021-11-19 15:48:41,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 1103 treesize of output 1072 [2021-11-19 15:48:47,817 WARN L227 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 718 DAG size of output: 88 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 15:48:47,818 INFO L354 Elim1Store]: treesize reduction 9214, result has 1.6 percent of original size [2021-11-19 15:48:47,833 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 17 case distinctions, treesize of input 572654734 treesize of output 572654801