./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_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_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/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_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/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_e05ad0de-f274-4bef-984b-ec416d67f87b/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 44162e1142387f3513ac3cf9af71d3c7aa6399e99cd364d08a07ceb8efc80a41 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:00:05,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:00:05,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:00:05,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:00:05,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:00:05,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:00:05,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:00:05,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:00:05,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:00:05,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:00:05,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:00:05,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:00:05,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:00:05,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:00:05,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:00:05,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:00:05,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:00:05,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:00:05,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:00:05,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:00:05,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:00:05,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:00:05,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:00:05,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:00:05,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:00:05,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:00:05,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:00:05,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:00:05,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:00:05,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:00:05,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:00:05,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:00:05,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:00:05,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:00:05,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:00:05,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:00:05,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:00:05,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:00:05,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:00:05,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:00:05,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:00:05,645 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 15:00:05,670 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:00:05,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:00:05,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:00:05,672 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:00:05,672 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:00:05,672 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:00:05,673 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:00:05,673 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:00:05,673 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:00:05,673 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:00:05,674 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:00:05,674 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:00:05,674 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:00:05,675 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:00:05,675 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:00:05,675 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:00:05,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:00:05,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:00:05,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:00:05,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:00:05,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:00:05,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:00:05,678 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:00:05,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:00:05,678 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:00:05,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:00:05,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:00:05,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:00:05,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:00:05,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:00:05,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:00:05,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:00:05,680 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:00:05,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:00:05,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:00:05,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:00:05,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:00:05,681 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_e05ad0de-f274-4bef-984b-ec416d67f87b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44162e1142387f3513ac3cf9af71d3c7aa6399e99cd364d08a07ceb8efc80a41 [2021-11-19 15:00:05,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:00:06,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:00:06,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:00:06,014 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:00:06,014 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:00:06,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i [2021-11-19 15:00:06,087 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/data/0fd014bd0/627b9f80fb934ecfa01ed491006c5a17/FLAG07ecab1eb [2021-11-19 15:00:07,106 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:00:07,106 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i [2021-11-19 15:00:07,153 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/data/0fd014bd0/627b9f80fb934ecfa01ed491006c5a17/FLAG07ecab1eb [2021-11-19 15:00:07,496 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/data/0fd014bd0/627b9f80fb934ecfa01ed491006c5a17 [2021-11-19 15:00:07,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:00:07,500 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:00:07,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:00:07,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:00:07,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:00:07,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:00:07" (1/1) ... [2021-11-19 15:00:07,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fbbe5d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:07, skipping insertion in model container [2021-11-19 15:00:07,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:00:07" (1/1) ... [2021-11-19 15:00:07,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:00:07,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:00:08,026 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_e05ad0de-f274-4bef-984b-ec416d67f87b/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i[4496,4509] [2021-11-19 15:00:08,037 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_e05ad0de-f274-4bef-984b-ec416d67f87b/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i[4556,4569] [2021-11-19 15:00:08,074 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:00:08,082 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:00:09,790 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:09,799 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:09,801 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:09,803 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:09,804 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:09,826 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:09,827 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:09,834 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:09,836 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:09,842 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:09,844 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:09,847 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:09,848 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:10,459 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:00:10,460 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:00:10,461 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:00:10,463 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:00:10,464 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:00:10,465 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:00:10,466 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:00:10,466 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:00:10,467 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:00:10,468 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:00:10,780 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:00:11,131 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:11,132 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:11,155 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:11,156 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:11,163 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:11,163 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:11,179 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:11,180 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:11,181 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:11,182 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:11,182 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:11,183 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:11,183 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:11,223 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:00:11,261 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 15:00:11,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@43c54f9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:11, skipping insertion in model container [2021-11-19 15:00:11,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:00:11,262 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:00:11,264 INFO L158 Benchmark]: Toolchain (without parser) took 3763.27ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 44.0MB in the beginning and 52.5MB in the end (delta: -8.5MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2021-11-19 15:00:11,265 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 92.3MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:00:11,266 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3760.41ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 43.8MB in the beginning and 52.5MB in the end (delta: -8.7MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2021-11-19 15:00:11,268 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 92.3MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3760.41ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 43.8MB in the beginning and 52.5MB in the end (delta: -8.7MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7051]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/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_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/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_e05ad0de-f274-4bef-984b-ec416d67f87b/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 44162e1142387f3513ac3cf9af71d3c7aa6399e99cd364d08a07ceb8efc80a41 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:00:13,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:00:13,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:00:13,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:00:13,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:00:13,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:00:13,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:00:13,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:00:13,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:00:13,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:00:13,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:00:13,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:00:13,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:00:13,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:00:13,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:00:13,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:00:13,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:00:13,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:00:13,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:00:13,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:00:13,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:00:13,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:00:13,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:00:13,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:00:13,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:00:13,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:00:13,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:00:13,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:00:13,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:00:13,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:00:13,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:00:13,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:00:13,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:00:13,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:00:13,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:00:13,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:00:13,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:00:13,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:00:13,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:00:13,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:00:13,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:00:13,998 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 15:00:14,027 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:00:14,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:00:14,028 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:00:14,028 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:00:14,028 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:00:14,029 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:00:14,029 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:00:14,029 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:00:14,029 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:00:14,030 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:00:14,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:00:14,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:00:14,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:00:14,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:00:14,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:00:14,031 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:00:14,032 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:00:14,032 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:00:14,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:00:14,032 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:00:14,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:00:14,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:00:14,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:00:14,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:00:14,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:00:14,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:00:14,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:00:14,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:00:14,034 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:00:14,035 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:00:14,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:00:14,035 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:00:14,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:00:14,035 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_e05ad0de-f274-4bef-984b-ec416d67f87b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44162e1142387f3513ac3cf9af71d3c7aa6399e99cd364d08a07ceb8efc80a41 [2021-11-19 15:00:14,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:00:14,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:00:14,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:00:14,410 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:00:14,412 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:00:14,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i [2021-11-19 15:00:14,495 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/data/3c2a6300f/cdedf57a6bc04da3b6e5bf88ca498e03/FLAG1d126fe44 [2021-11-19 15:00:15,528 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:00:15,532 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i [2021-11-19 15:00:15,609 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/data/3c2a6300f/cdedf57a6bc04da3b6e5bf88ca498e03/FLAG1d126fe44 [2021-11-19 15:00:15,897 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/data/3c2a6300f/cdedf57a6bc04da3b6e5bf88ca498e03 [2021-11-19 15:00:15,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:00:15,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:00:15,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:00:15,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:00:15,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:00:15,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:00:15" (1/1) ... [2021-11-19 15:00:15,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd38d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:15, skipping insertion in model container [2021-11-19 15:00:15,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:00:15" (1/1) ... [2021-11-19 15:00:15,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:00:16,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:00:16,479 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_e05ad0de-f274-4bef-984b-ec416d67f87b/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i[4496,4509] [2021-11-19 15:00:16,490 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_e05ad0de-f274-4bef-984b-ec416d67f87b/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i[4556,4569] [2021-11-19 15:00:16,525 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:00:16,535 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:00:17,737 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:17,737 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:17,738 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:17,739 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:17,740 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:17,758 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:17,759 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:17,761 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:17,762 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:17,764 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:17,766 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:17,767 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:17,767 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:18,341 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:00:18,342 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:00:18,344 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:00:18,345 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:00:18,347 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:00:18,348 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:00:18,349 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:00:18,350 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:00:18,350 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:00:18,351 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:00:18,604 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:00:19,075 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,076 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,121 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,123 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,134 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,135 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,163 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,165 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,167 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,167 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,168 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,168 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,169 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,246 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:00:19,318 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:00:19,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:00:19,421 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_e05ad0de-f274-4bef-984b-ec416d67f87b/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i[4496,4509] [2021-11-19 15:00:19,422 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_e05ad0de-f274-4bef-984b-ec416d67f87b/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i[4556,4569] [2021-11-19 15:00:19,423 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:00:19,428 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:00:19,488 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,489 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,489 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,490 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,490 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,502 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,503 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,504 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,505 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,506 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,508 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,508 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,509 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,555 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:00:19,557 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:00:19,558 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:00:19,560 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:00:19,561 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:00:19,561 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:00:19,562 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:00:19,563 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:00:19,564 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:00:19,564 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:00:19,605 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:00:19,799 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,800 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,825 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,827 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,830 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,831 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,845 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,847 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,847 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,848 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,848 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,849 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,849 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,874 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:00:19,924 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:00:19,953 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_e05ad0de-f274-4bef-984b-ec416d67f87b/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i[4496,4509] [2021-11-19 15:00:19,953 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_e05ad0de-f274-4bef-984b-ec416d67f87b/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i[4556,4569] [2021-11-19 15:00:19,955 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:00:19,956 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:00:19,995 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,997 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,997 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,998 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:19,999 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:20,006 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:20,007 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:20,007 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:20,008 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:20,011 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:20,012 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:20,013 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:20,014 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:20,103 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:00:20,137 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:00:20,138 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:00:20,139 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:00:20,140 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:00:20,140 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:00:20,141 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:00:20,141 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:00:20,144 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:00:20,145 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:00:20,181 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:00:20,368 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:20,368 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:20,383 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:20,383 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:20,389 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:20,389 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:20,402 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:20,403 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:20,404 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:20,404 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:20,405 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:20,405 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:20,406 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:00:20,438 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:00:20,822 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:00:20,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:20 WrapperNode [2021-11-19 15:00:20,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:00:20,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:00:20,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:00:20,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:00:20,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:20" (1/1) ... [2021-11-19 15:00:20,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:20" (1/1) ... [2021-11-19 15:00:21,089 INFO L137 Inliner]: procedures = 797, calls = 2437, calls flagged for inlining = 71, calls inlined = 17, statements flattened = 896 [2021-11-19 15:00:21,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:00:21,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:00:21,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:00:21,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:00:21,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:20" (1/1) ... [2021-11-19 15:00:21,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:20" (1/1) ... [2021-11-19 15:00:21,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:20" (1/1) ... [2021-11-19 15:00:21,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:20" (1/1) ... [2021-11-19 15:00:21,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:20" (1/1) ... [2021-11-19 15:00:21,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:20" (1/1) ... [2021-11-19 15:00:21,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:20" (1/1) ... [2021-11-19 15:00:21,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:00:21,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:00:21,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:00:21,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:00:21,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:20" (1/1) ... [2021-11-19 15:00:21,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:00:21,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:00:21,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:00:21,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:00:21,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-19 15:00:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-19 15:00:21,347 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-19 15:00:21,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 15:00:21,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 15:00:21,348 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-19 15:00:21,348 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-19 15:00:21,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:00:21,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:00:21,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 15:00:21,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:00:21,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:00:21,349 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 15:00:21,349 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 15:00:21,349 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-19 15:00:21,349 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-19 15:00:21,349 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-19 15:00:21,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 15:00:21,349 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 15:00:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:00:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-19 15:00:21,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-19 15:00:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-19 15:00:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 15:00:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 15:00:21,351 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 15:00:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-19 15:00:21,352 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-19 15:00:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:00:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:00:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 15:00:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 15:00:21,353 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-19 15:00:21,353 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-19 15:00:21,353 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 15:00:21,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 15:00:21,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 15:00:21,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 15:00:21,353 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2021-11-19 15:00:21,353 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2021-11-19 15:00:21,354 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 15:00:21,354 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 15:00:21,354 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_int [2021-11-19 15:00:21,354 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_int [2021-11-19 15:00:21,354 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2021-11-19 15:00:21,354 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2021-11-19 15:00:21,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 15:00:21,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 15:00:21,355 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-19 15:00:21,355 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-19 15:00:21,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 15:00:21,355 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-19 15:00:21,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-19 15:00:21,356 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-19 15:00:21,356 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-19 15:00:21,356 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_entry [2021-11-19 15:00:21,356 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_entry [2021-11-19 15:00:21,907 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:00:21,911 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:00:24,271 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !true; [2021-11-19 15:00:24,271 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true; [2021-11-19 15:00:30,479 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !true; [2021-11-19 15:00:30,501 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:00:30,511 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:00:30,511 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-19 15:00:30,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:00:30 BoogieIcfgContainer [2021-11-19 15:00:30,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:00:30,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:00:30,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:00:30,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:00:30,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:00:15" (1/3) ... [2021-11-19 15:00:30,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7365e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:00:30, skipping insertion in model container [2021-11-19 15:00:30,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:20" (2/3) ... [2021-11-19 15:00:30,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7365e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:00:30, skipping insertion in model container [2021-11-19 15:00:30,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:00:30" (3/3) ... [2021-11-19 15:00:30,522 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_foreach_harness.i [2021-11-19 15:00:30,528 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:00:30,528 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:00:30,580 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:00:30,586 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 15:00:30,586 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:00:30,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 257 states, 169 states have (on average 1.2840236686390532) internal successors, (217), 166 states have internal predecessors, (217), 71 states have call successors, (71), 19 states have call predecessors, (71), 19 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2021-11-19 15:00:30,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-19 15:00:30,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:00:30,624 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:00:30,624 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:00:30,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:00:30,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1301326359, now seen corresponding path program 1 times [2021-11-19 15:00:30,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:00:30,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898846155] [2021-11-19 15:00:30,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:00:30,648 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:00:30,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:00:30,653 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:00:30,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:00:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:00:31,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 15:00:31,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:00:31,920 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-11-19 15:00:31,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:00:32,328 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-11-19 15:00:32,329 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:00:32,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898846155] [2021-11-19 15:00:32,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898846155] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:00:32,330 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:00:32,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 15:00:32,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304305850] [2021-11-19 15:00:32,333 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:00:32,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 15:00:32,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:00:32,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 15:00:32,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:00:32,388 INFO L87 Difference]: Start difference. First operand has 257 states, 169 states have (on average 1.2840236686390532) internal successors, (217), 166 states have internal predecessors, (217), 71 states have call successors, (71), 19 states have call predecessors, (71), 19 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 15:00:32,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:00:32,496 INFO L93 Difference]: Finished difference Result 505 states and 745 transitions. [2021-11-19 15:00:32,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 15:00:32,500 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 118 [2021-11-19 15:00:32,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:00:32,521 INFO L225 Difference]: With dead ends: 505 [2021-11-19 15:00:32,522 INFO L226 Difference]: Without dead ends: 251 [2021-11-19 15:00:32,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 234 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 15:00:32,542 INFO L933 BasicCegarLoop]: 345 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, 345 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 15:00:32,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:00:32,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-19 15:00:32,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2021-11-19 15:00:32,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 160 states have (on average 1.24375) internal successors, (199), 161 states have internal predecessors, (199), 71 states have call successors, (71), 19 states have call predecessors, (71), 19 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2021-11-19 15:00:32,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 340 transitions. [2021-11-19 15:00:32,634 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 340 transitions. Word has length 118 [2021-11-19 15:00:32,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:00:32,635 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 340 transitions. [2021-11-19 15:00:32,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 15:00:32,636 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 340 transitions. [2021-11-19 15:00:32,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-19 15:00:32,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:00:32,640 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:00:32,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:00:32,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:00:32,859 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:00:32,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:00:32,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1388905434, now seen corresponding path program 1 times [2021-11-19 15:00:32,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:00:32,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795008902] [2021-11-19 15:00:32,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:00:32,864 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:00:32,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:00:32,867 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:00:32,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:00:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:00:33,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:00:33,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:00:34,242 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-19 15:00:34,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:00:34,739 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-11-19 15:00:34,740 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:00:34,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795008902] [2021-11-19 15:00:34,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795008902] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:00:34,740 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:00:34,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 15:00:34,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469048868] [2021-11-19 15:00:34,741 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:00:34,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:00:34,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:00:34,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:00:34,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:00:34,749 INFO L87 Difference]: Start difference. First operand 251 states and 340 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:00:34,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:00:34,874 INFO L93 Difference]: Finished difference Result 463 states and 634 transitions. [2021-11-19 15:00:34,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:00:34,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) Word has length 124 [2021-11-19 15:00:34,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:00:34,885 INFO L225 Difference]: With dead ends: 463 [2021-11-19 15:00:34,886 INFO L226 Difference]: Without dead ends: 255 [2021-11-19 15:00:34,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:00:34,893 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 2 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:00:34,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1348 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:00:34,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-19 15:00:34,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-11-19 15:00:34,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 163 states have (on average 1.2392638036809815) internal successors, (202), 164 states have internal predecessors, (202), 71 states have call successors, (71), 19 states have call predecessors, (71), 20 states have return successors, (71), 71 states have call predecessors, (71), 70 states have call successors, (71) [2021-11-19 15:00:34,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 344 transitions. [2021-11-19 15:00:34,925 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 344 transitions. Word has length 124 [2021-11-19 15:00:34,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:00:34,927 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 344 transitions. [2021-11-19 15:00:34,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:00:34,928 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 344 transitions. [2021-11-19 15:00:34,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-19 15:00:34,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:00:34,931 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:00:34,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-19 15:00:35,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:00:35,155 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:00:35,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:00:35,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1368164266, now seen corresponding path program 1 times [2021-11-19 15:00:35,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:00:35,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863715350] [2021-11-19 15:00:35,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:00:35,160 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:00:35,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:00:35,162 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:00:35,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:00:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:00:36,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:00:36,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:00:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-19 15:00:36,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:00:37,013 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-19 15:00:37,013 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:00:37,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863715350] [2021-11-19 15:00:37,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1863715350] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:00:37,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:00:37,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-19 15:00:37,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093851618] [2021-11-19 15:00:37,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:00:37,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:00:37,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:00:37,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:00:37,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:00:37,016 INFO L87 Difference]: Start difference. First operand 255 states and 344 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-19 15:00:37,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:00:37,392 INFO L93 Difference]: Finished difference Result 463 states and 633 transitions. [2021-11-19 15:00:37,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:00:37,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 130 [2021-11-19 15:00:37,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:00:37,400 INFO L225 Difference]: With dead ends: 463 [2021-11-19 15:00:37,400 INFO L226 Difference]: Without dead ends: 255 [2021-11-19 15:00:37,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:00:37,403 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 2 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:00:37,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1553 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:00:37,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-19 15:00:37,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 251. [2021-11-19 15:00:37,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 160 states have (on average 1.23125) internal successors, (197), 161 states have internal predecessors, (197), 71 states have call successors, (71), 19 states have call predecessors, (71), 19 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2021-11-19 15:00:37,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 338 transitions. [2021-11-19 15:00:37,443 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 338 transitions. Word has length 130 [2021-11-19 15:00:37,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:00:37,444 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 338 transitions. [2021-11-19 15:00:37,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-19 15:00:37,445 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 338 transitions. [2021-11-19 15:00:37,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-19 15:00:37,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:00:37,448 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:00:37,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:00:37,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:00:37,675 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:00:37,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:00:37,676 INFO L85 PathProgramCache]: Analyzing trace with hash 726297413, now seen corresponding path program 1 times [2021-11-19 15:00:37,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:00:37,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803569429] [2021-11-19 15:00:37,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:00:37,679 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:00:37,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:00:37,680 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:00:37,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:00:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:00:38,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 1395 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 15:00:38,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:00:39,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-19 15:00:40,119 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 15:00:40,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:00:40,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-19 15:00:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-19 15:00:41,232 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:00:41,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803569429] [2021-11-19 15:00:41,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803569429] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:00:41,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:00:41,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 15 [2021-11-19 15:00:41,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443003251] [2021-11-19 15:00:41,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:00:41,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 15:00:41,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:00:41,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 15:00:41,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:00:41,235 INFO L87 Difference]: Start difference. First operand 251 states and 338 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-19 15:00:43,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:00:46,121 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:00:47,563 WARN L515 Checker$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 15:00:47,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:00:47,941 INFO L93 Difference]: Finished difference Result 458 states and 626 transitions. [2021-11-19 15:00:47,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 15:00:47,958 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 135 [2021-11-19 15:00:47,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:00:47,962 INFO L225 Difference]: With dead ends: 458 [2021-11-19 15:00:47,962 INFO L226 Difference]: Without dead ends: 260 [2021-11-19 15:00:47,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-19 15:00:47,965 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 12 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2492 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:00:47,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 2492 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 1 Unknown, 155 Unchecked, 6.6s Time] [2021-11-19 15:00:47,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-11-19 15:00:47,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2021-11-19 15:00:47,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 168 states have (on average 1.2321428571428572) internal successors, (207), 169 states have internal predecessors, (207), 71 states have call successors, (71), 20 states have call predecessors, (71), 20 states have return successors, (71), 70 states have call predecessors, (71), 70 states have call successors, (71) [2021-11-19 15:00:47,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 349 transitions. [2021-11-19 15:00:47,988 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 349 transitions. Word has length 135 [2021-11-19 15:00:47,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:00:47,989 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 349 transitions. [2021-11-19 15:00:47,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-19 15:00:47,989 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 349 transitions. [2021-11-19 15:00:47,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-19 15:00:47,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:00:47,992 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:00:48,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:00:48,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:00:48,215 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:00:48,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:00:48,215 INFO L85 PathProgramCache]: Analyzing trace with hash -489856313, now seen corresponding path program 1 times [2021-11-19 15:00:48,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:00:48,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718715480] [2021-11-19 15:00:48,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:00:48,217 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:00:48,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:00:48,218 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:00:48,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:00:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:00:49,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:00:49,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:00:49,622 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 15:00:49,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:00:50,130 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-19 15:00:50,130 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:00:50,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718715480] [2021-11-19 15:00:50,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718715480] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:00:50,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:00:50,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 15:00:50,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609051405] [2021-11-19 15:00:50,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:00:50,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:00:50,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:00:50,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:00:50,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:00:50,132 INFO L87 Difference]: Start difference. First operand 260 states and 349 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-19 15:00:50,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:00:50,245 INFO L93 Difference]: Finished difference Result 462 states and 635 transitions. [2021-11-19 15:00:50,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:00:50,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 135 [2021-11-19 15:00:50,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:00:50,249 INFO L225 Difference]: With dead ends: 462 [2021-11-19 15:00:50,249 INFO L226 Difference]: Without dead ends: 262 [2021-11-19 15:00:50,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 265 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 15:00:50,252 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 79 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:00:50,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 887 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:00:50,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-19 15:00:50,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2021-11-19 15:00:50,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 169 states have (on average 1.2248520710059172) internal successors, (207), 170 states have internal predecessors, (207), 72 states have call successors, (72), 20 states have call predecessors, (72), 20 states have return successors, (74), 71 states have call predecessors, (74), 71 states have call successors, (74) [2021-11-19 15:00:50,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 353 transitions. [2021-11-19 15:00:50,274 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 353 transitions. Word has length 135 [2021-11-19 15:00:50,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:00:50,275 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 353 transitions. [2021-11-19 15:00:50,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-19 15:00:50,276 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 353 transitions. [2021-11-19 15:00:50,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-19 15:00:50,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:00:50,279 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:00:50,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-19 15:00:50,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:00:50,495 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:00:50,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:00:50,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1306506453, now seen corresponding path program 1 times [2021-11-19 15:00:50,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:00:50,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777142685] [2021-11-19 15:00:50,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:00:50,497 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:00:50,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:00:50,498 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:00:50,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:00:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:00:51,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 15:00:51,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:00:51,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-19 15:00:52,710 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 15:00:52,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:00:53,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-19 15:00:53,774 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-19 15:00:53,775 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:00:53,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777142685] [2021-11-19 15:00:53,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777142685] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:00:53,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:00:53,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 17 [2021-11-19 15:00:53,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170448851] [2021-11-19 15:00:53,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:00:53,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 15:00:53,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:00:53,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 15:00:53,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:00:53,777 INFO L87 Difference]: Start difference. First operand 262 states and 353 transitions. Second operand has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 10 states have internal predecessors, (71), 5 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2021-11-19 15:00:55,865 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:00:58,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:01:00,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:01:00,212 INFO L93 Difference]: Finished difference Result 473 states and 648 transitions. [2021-11-19 15:01:00,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 15:01:00,213 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 10 states have internal predecessors, (71), 5 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 141 [2021-11-19 15:01:00,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:01:00,216 INFO L225 Difference]: With dead ends: 473 [2021-11-19 15:01:00,217 INFO L226 Difference]: Without dead ends: 265 [2021-11-19 15:01:00,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-11-19 15:01:00,219 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 79 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 2096 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:01:00,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 2096 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 123 Invalid, 1 Unknown, 150 Unchecked, 6.3s Time] [2021-11-19 15:01:00,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-19 15:01:00,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2021-11-19 15:01:00,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 171 states have (on average 1.2222222222222223) internal successors, (209), 172 states have internal predecessors, (209), 73 states have call successors, (73), 21 states have call predecessors, (73), 20 states have return successors, (75), 71 states have call predecessors, (75), 72 states have call successors, (75) [2021-11-19 15:01:00,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 357 transitions. [2021-11-19 15:01:00,249 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 357 transitions. Word has length 141 [2021-11-19 15:01:00,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:01:00,250 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 357 transitions. [2021-11-19 15:01:00,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 10 states have internal predecessors, (71), 5 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2021-11-19 15:01:00,251 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 357 transitions. [2021-11-19 15:01:00,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-19 15:01:00,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:00,254 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:01:00,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:01:00,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:01:00,475 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:01:00,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:00,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1537136519, now seen corresponding path program 1 times [2021-11-19 15:01:00,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:00,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586935374] [2021-11-19 15:01:00,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:00,478 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:00,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:00,479 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:00,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 15:01:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:01,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 1426 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:01:01,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-19 15:01:01,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:02,279 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-19 15:01:02,279 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:01:02,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586935374] [2021-11-19 15:01:02,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586935374] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:01:02,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:01:02,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2021-11-19 15:01:02,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261210872] [2021-11-19 15:01:02,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:01:02,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:01:02,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:01:02,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:01:02,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:01:02,282 INFO L87 Difference]: Start difference. First operand 265 states and 357 transitions. Second operand has 7 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-19 15:01:02,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:01:02,649 INFO L93 Difference]: Finished difference Result 470 states and 646 transitions. [2021-11-19 15:01:02,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:01:02,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 146 [2021-11-19 15:01:02,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:01:02,654 INFO L225 Difference]: With dead ends: 470 [2021-11-19 15:01:02,654 INFO L226 Difference]: Without dead ends: 271 [2021-11-19 15:01:02,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:01:02,656 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 2 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:01:02,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1863 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:01:02,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-11-19 15:01:02,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2021-11-19 15:01:02,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 175 states have (on average 1.217142857142857) internal successors, (213), 178 states have internal predecessors, (213), 73 states have call successors, (73), 21 states have call predecessors, (73), 22 states have return successors, (80), 71 states have call predecessors, (80), 72 states have call successors, (80) [2021-11-19 15:01:02,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 366 transitions. [2021-11-19 15:01:02,677 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 366 transitions. Word has length 146 [2021-11-19 15:01:02,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:01:02,678 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 366 transitions. [2021-11-19 15:01:02,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-19 15:01:02,678 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 366 transitions. [2021-11-19 15:01:02,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-19 15:01:02,681 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:02,681 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:01:02,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:01:02,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:01:02,905 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:01:02,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:02,906 INFO L85 PathProgramCache]: Analyzing trace with hash -854653879, now seen corresponding path program 1 times [2021-11-19 15:01:02,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:02,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574222214] [2021-11-19 15:01:02,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:02,908 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:02,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:02,909 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:02,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:01:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:03,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 15:01:03,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:04,953 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-19 15:01:04,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-19 15:01:05,823 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:01:05,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574222214] [2021-11-19 15:01:05,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574222214] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:01:05,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:01:05,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2021-11-19 15:01:05,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122752841] [2021-11-19 15:01:05,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:01:05,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:01:05,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:01:05,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:01:05,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:01:05,825 INFO L87 Difference]: Start difference. First operand 271 states and 366 transitions. Second operand has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-19 15:01:07,907 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:01:09,915 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:01:12,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:01:14,784 WARN L515 Checker$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 15:01:16,146 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:01:17,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:01:18,603 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:01:18,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:01:18,960 INFO L93 Difference]: Finished difference Result 480 states and 672 transitions. [2021-11-19 15:01:18,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 15:01:18,971 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) Word has length 152 [2021-11-19 15:01:18,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:01:18,974 INFO L225 Difference]: With dead ends: 480 [2021-11-19 15:01:18,974 INFO L226 Difference]: Without dead ends: 273 [2021-11-19 15:01:18,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:01:18,976 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 7 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:01:18,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1844 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 2 Unknown, 117 Unchecked, 12.8s Time] [2021-11-19 15:01:18,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-11-19 15:01:18,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 270. [2021-11-19 15:01:18,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 175 states have (on average 1.217142857142857) internal successors, (213), 177 states have internal predecessors, (213), 72 states have call successors, (72), 21 states have call predecessors, (72), 22 states have return successors, (79), 71 states have call predecessors, (79), 71 states have call successors, (79) [2021-11-19 15:01:18,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 364 transitions. [2021-11-19 15:01:18,999 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 364 transitions. Word has length 152 [2021-11-19 15:01:19,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:01:19,000 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 364 transitions. [2021-11-19 15:01:19,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-19 15:01:19,000 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 364 transitions. [2021-11-19 15:01:19,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-19 15:01:19,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:19,003 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:01:19,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:01:19,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:01:19,219 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:01:19,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:19,219 INFO L85 PathProgramCache]: Analyzing trace with hash -469235373, now seen corresponding path program 2 times [2021-11-19 15:01:19,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:19,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71689685] [2021-11-19 15:01:19,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:01:19,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:19,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:19,225 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:19,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 15:01:24,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:01:24,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:01:24,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:01:24,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 15:01:24,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:25,366 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-19 15:01:25,367 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:01:25,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71689685] [2021-11-19 15:01:25,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71689685] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:01:25,367 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:01:25,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 15:01:25,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300353127] [2021-11-19 15:01:25,368 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:01:25,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:01:25,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:01:25,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:01:25,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:01:25,370 INFO L87 Difference]: Start difference. First operand 270 states and 364 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-19 15:01:25,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:01:25,536 INFO L93 Difference]: Finished difference Result 483 states and 663 transitions. [2021-11-19 15:01:25,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:01:25,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 157 [2021-11-19 15:01:25,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:01:25,541 INFO L225 Difference]: With dead ends: 483 [2021-11-19 15:01:25,541 INFO L226 Difference]: Without dead ends: 277 [2021-11-19 15:01:25,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:01:25,543 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 6 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:01:25,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 1337 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:01:25,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-11-19 15:01:25,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2021-11-19 15:01:25,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 181 states have (on average 1.2209944751381216) internal successors, (221), 183 states have internal predecessors, (221), 72 states have call successors, (72), 22 states have call predecessors, (72), 23 states have return successors, (79), 71 states have call predecessors, (79), 71 states have call successors, (79) [2021-11-19 15:01:25,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 372 transitions. [2021-11-19 15:01:25,564 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 372 transitions. Word has length 157 [2021-11-19 15:01:25,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:01:25,565 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 372 transitions. [2021-11-19 15:01:25,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-19 15:01:25,566 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 372 transitions. [2021-11-19 15:01:25,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-19 15:01:25,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:25,568 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:01:25,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 15:01:25,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:01:25,783 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:01:25,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:25,783 INFO L85 PathProgramCache]: Analyzing trace with hash -781680973, now seen corresponding path program 1 times [2021-11-19 15:01:25,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:25,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692316532] [2021-11-19 15:01:25,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:25,786 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:25,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:25,787 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:25,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 15:01:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:26,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 1467 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:01:26,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:27,228 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 62 proven. 3 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 15:01:27,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:27,761 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-19 15:01:27,761 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:01:27,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692316532] [2021-11-19 15:01:27,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692316532] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:01:27,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1861017252] [2021-11-19 15:01:27,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:27,762 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:01:27,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:01:27,766 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:01:27,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-19 15:01:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:28,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 1467 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:01:28,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:28,814 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-11-19 15:01:28,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:29,220 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-11-19 15:01:29,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1861017252] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:01:29,221 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:01:29,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [6, 6] total 16 [2021-11-19 15:01:29,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446775665] [2021-11-19 15:01:29,221 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:01:29,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:01:29,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:01:29,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:01:29,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-11-19 15:01:29,223 INFO L87 Difference]: Start difference. First operand 277 states and 372 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-19 15:01:29,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:01:29,580 INFO L93 Difference]: Finished difference Result 479 states and 656 transitions. [2021-11-19 15:01:29,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:01:29,581 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 159 [2021-11-19 15:01:29,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:01:29,584 INFO L225 Difference]: With dead ends: 479 [2021-11-19 15:01:29,584 INFO L226 Difference]: Without dead ends: 277 [2021-11-19 15:01:29,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 618 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:01:29,586 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 2 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:01:29,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1864 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:01:29,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-11-19 15:01:29,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2021-11-19 15:01:29,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 181 states have (on average 1.2209944751381216) internal successors, (221), 183 states have internal predecessors, (221), 72 states have call successors, (72), 22 states have call predecessors, (72), 23 states have return successors, (77), 71 states have call predecessors, (77), 71 states have call successors, (77) [2021-11-19 15:01:29,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 370 transitions. [2021-11-19 15:01:29,608 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 370 transitions. Word has length 159 [2021-11-19 15:01:29,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:01:29,609 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 370 transitions. [2021-11-19 15:01:29,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-19 15:01:29,610 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 370 transitions. [2021-11-19 15:01:29,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-19 15:01:29,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:29,613 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:01:29,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:01:29,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-19 15:01:30,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:01:30,034 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:01:30,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:30,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1683545923, now seen corresponding path program 1 times [2021-11-19 15:01:30,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:30,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415110171] [2021-11-19 15:01:30,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:30,037 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:30,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:30,038 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:30,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 15:01:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:31,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:01:31,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 87 proven. 3 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 15:01:31,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:32,040 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-11-19 15:01:32,041 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:01:32,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415110171] [2021-11-19 15:01:32,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415110171] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:01:32,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [425123767] [2021-11-19 15:01:32,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:32,041 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:01:32,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:01:32,042 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:01:32,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-19 15:01:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:32,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:01:32,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:33,316 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2021-11-19 15:01:33,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:33,807 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2021-11-19 15:01:33,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [425123767] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:01:33,807 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:01:33,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [6, 6] total 16 [2021-11-19 15:01:33,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014908328] [2021-11-19 15:01:33,808 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:01:33,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:01:33,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:01:33,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:01:33,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-11-19 15:01:33,810 INFO L87 Difference]: Start difference. First operand 277 states and 370 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-19 15:01:35,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:01:43,508 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:01:44,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:01:44,005 INFO L93 Difference]: Finished difference Result 495 states and 681 transitions. [2021-11-19 15:01:44,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:01:44,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 170 [2021-11-19 15:01:44,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:01:44,010 INFO L225 Difference]: With dead ends: 495 [2021-11-19 15:01:44,010 INFO L226 Difference]: Without dead ends: 294 [2021-11-19 15:01:44,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 662 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-11-19 15:01:44,013 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 46 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 2128 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:01:44,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 2128 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2021-11-19 15:01:44,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-19 15:01:44,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2021-11-19 15:01:44,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 191 states have (on average 1.219895287958115) internal successors, (233), 194 states have internal predecessors, (233), 77 states have call successors, (77), 23 states have call predecessors, (77), 25 states have return successors, (90), 76 states have call predecessors, (90), 76 states have call successors, (90) [2021-11-19 15:01:44,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 400 transitions. [2021-11-19 15:01:44,037 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 400 transitions. Word has length 170 [2021-11-19 15:01:44,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:01:44,038 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 400 transitions. [2021-11-19 15:01:44,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-19 15:01:44,039 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 400 transitions. [2021-11-19 15:01:44,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-19 15:01:44,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:44,042 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:01:44,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 15:01:44,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-19 15:01:44,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:01:44,459 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:01:44,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:44,460 INFO L85 PathProgramCache]: Analyzing trace with hash 223999729, now seen corresponding path program 1 times [2021-11-19 15:01:44,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:44,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015321210] [2021-11-19 15:01:44,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:44,462 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:44,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:44,463 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:44,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 15:01:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:45,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 1501 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:01:45,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:45,838 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 87 proven. 3 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 15:01:45,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:46,397 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-11-19 15:01:46,398 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:01:46,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015321210] [2021-11-19 15:01:46,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015321210] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:01:46,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1552970125] [2021-11-19 15:01:46,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:46,398 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:01:46,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:01:46,402 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:01:46,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-19 15:01:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:49,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 1501 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:01:49,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:49,572 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 87 proven. 3 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 15:01:49,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:50,010 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-11-19 15:01:50,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1552970125] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:01:50,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242154100] [2021-11-19 15:01:50,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:50,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:01:50,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:01:50,014 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:01:50,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-19 15:01:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:51,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 1501 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:01:51,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:51,617 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 87 proven. 3 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 15:01:51,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:52,251 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-11-19 15:01:52,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242154100] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:01:52,252 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 15:01:52,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-19 15:01:52,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399782724] [2021-11-19 15:01:52,253 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 15:01:52,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 15:01:52,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:01:52,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 15:01:52,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-19 15:01:52,256 INFO L87 Difference]: Start difference. First operand 294 states and 400 transitions. Second operand has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 2 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:01:53,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:01:53,096 INFO L93 Difference]: Finished difference Result 530 states and 734 transitions. [2021-11-19 15:01:53,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:01:53,098 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 2 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 171 [2021-11-19 15:01:53,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:01:53,101 INFO L225 Difference]: With dead ends: 530 [2021-11-19 15:01:53,101 INFO L226 Difference]: Without dead ends: 300 [2021-11-19 15:01:53,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1028 GetRequests, 1008 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-11-19 15:01:53,104 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 35 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2004 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:01:53,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 2004 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 15:01:53,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-11-19 15:01:53,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2021-11-19 15:01:53,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 197 states have (on average 1.2081218274111676) internal successors, (238), 200 states have internal predecessors, (238), 77 states have call successors, (77), 23 states have call predecessors, (77), 25 states have return successors, (90), 76 states have call predecessors, (90), 76 states have call successors, (90) [2021-11-19 15:01:53,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 405 transitions. [2021-11-19 15:01:53,126 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 405 transitions. Word has length 171 [2021-11-19 15:01:53,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:01:53,127 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 405 transitions. [2021-11-19 15:01:53,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 2 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:01:53,128 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 405 transitions. [2021-11-19 15:01:53,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-19 15:01:53,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:53,131 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:01:53,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-19 15:01:53,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 15:01:53,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-19 15:01:53,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:01:53,760 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:01:53,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:53,761 INFO L85 PathProgramCache]: Analyzing trace with hash 471546289, now seen corresponding path program 2 times [2021-11-19 15:01:53,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:53,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851753114] [2021-11-19 15:01:53,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:01:53,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:53,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:53,764 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:53,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 15:01:58,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:01:58,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:01:59,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 15:01:59,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:59,669 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 87 proven. 21 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 15:01:59,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:00,843 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-11-19 15:02:00,844 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:00,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851753114] [2021-11-19 15:02:00,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851753114] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:02:00,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [659064719] [2021-11-19 15:02:00,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:02:00,845 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:02:00,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:02:00,853 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:02:00,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-19 15:02:43,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:02:43,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:02:44,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 15:02:44,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 87 proven. 21 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 15:02:44,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:45,135 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-11-19 15:02:45,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [659064719] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:02:45,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747296573] [2021-11-19 15:02:45,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:02:45,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:02:45,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:02:45,143 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:02:45,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-19 15:03:37,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:03:37,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:03:37,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:03:37,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:38,452 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 87 proven. 21 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 15:03:38,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:40,012 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-11-19 15:03:40,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747296573] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:03:40,012 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 15:03:40,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 26 [2021-11-19 15:03:40,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446947025] [2021-11-19 15:03:40,013 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 15:03:40,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-19 15:03:40,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:40,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-19 15:03:40,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2021-11-19 15:03:40,017 INFO L87 Difference]: Start difference. First operand 300 states and 405 transitions. Second operand has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 2 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:03:43,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:43,395 INFO L93 Difference]: Finished difference Result 548 states and 757 transitions. [2021-11-19 15:03:43,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-19 15:03:43,398 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 2 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 175 [2021-11-19 15:03:43,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:43,402 INFO L225 Difference]: With dead ends: 548 [2021-11-19 15:03:43,402 INFO L226 Difference]: Without dead ends: 312 [2021-11-19 15:03:43,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1062 GetRequests, 1020 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=654, Invalid=1238, Unknown=0, NotChecked=0, Total=1892 [2021-11-19 15:03:43,406 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 76 mSDsluCounter, 2356 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:43,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 2694 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 15:03:43,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-19 15:03:43,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2021-11-19 15:03:43,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 209 states have (on average 1.1961722488038278) internal successors, (250), 212 states have internal predecessors, (250), 77 states have call successors, (77), 23 states have call predecessors, (77), 25 states have return successors, (90), 76 states have call predecessors, (90), 76 states have call successors, (90) [2021-11-19 15:03:43,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 417 transitions. [2021-11-19 15:03:43,437 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 417 transitions. Word has length 175 [2021-11-19 15:03:43,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:43,438 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 417 transitions. [2021-11-19 15:03:43,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 2 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 15:03:43,438 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 417 transitions. [2021-11-19 15:03:43,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-19 15:03:43,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:43,441 INFO L514 BasicCegarLoop]: trace histogram [14, 8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:03:43,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 15:03:43,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-19 15:03:43,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-19 15:03:44,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:03:44,055 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:03:44,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:44,055 INFO L85 PathProgramCache]: Analyzing trace with hash 615489329, now seen corresponding path program 3 times [2021-11-19 15:03:44,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:44,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621228916] [2021-11-19 15:03:44,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:03:44,058 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:44,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:44,059 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:44,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e05ad0de-f274-4bef-984b-ec416d67f87b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 15:04:06,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 15:04:06,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:04:07,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 15:04:07,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:08,665 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:04:08,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 691 [2021-11-19 15:04:08,687 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 691 treesize of output 672 [2021-11-19 15:04:23,006 WARN L227 SmtUtils]: Spent 9.88s on a formula simplification. DAG size of input: 498 DAG size of output: 57 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 15:04:23,007 INFO L354 Elim1Store]: treesize reduction 5813, result has 1.7 percent of original size [2021-11-19 15:04:23,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 case distinctions, treesize of input 721183322513 treesize of output 721183322509