./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_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_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/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_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/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_6496761a-0765-4f03-af18-f28e0f79524e/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 fd704c0997d5526a33ae946f9f6b6d8e05b412ad44e87cb653981b428eeb987a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:47:46,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:47:46,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:47:46,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:47:46,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:47:46,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:47:46,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:47:46,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:47:46,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:47:46,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:47:46,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:47:46,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:47:46,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:47:46,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:47:46,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:47:46,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:47:46,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:47:46,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:47:46,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:47:46,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:47:46,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:47:46,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:47:46,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:47:46,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:47:46,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:47:46,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:47:46,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:47:46,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:47:46,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:47:46,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:47:46,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:47:46,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:47:46,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:47:46,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:47:46,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:47:46,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:47:46,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:47:46,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:47:46,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:47:46,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:47:46,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:47:46,627 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:47:46,654 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:47:46,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:47:46,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:47:46,656 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:47:46,656 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:47:46,656 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:47:46,656 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:47:46,657 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:47:46,657 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:47:46,657 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:47:46,657 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:47:46,657 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:47:46,658 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:47:46,658 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:47:46,658 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:47:46,659 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:47:46,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:47:46,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:47:46,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:47:46,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:47:46,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:47:46,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:47:46,661 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:47:46,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:47:46,661 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:47:46,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:47:46,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:47:46,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:47:46,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:47:46,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:47:46,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:47:46,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:47:46,663 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:47:46,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:47:46,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:47:46,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:47:46,664 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:47:46,665 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_6496761a-0765-4f03-af18-f28e0f79524e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd704c0997d5526a33ae946f9f6b6d8e05b412ad44e87cb653981b428eeb987a [2021-11-19 14:47:46,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:47:46,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:47:46,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:47:46,952 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:47:46,953 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:47:46,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i [2021-11-19 14:47:47,034 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/data/e7d7c4c98/621c69836a864afabce34e15558520fd/FLAG1e559f7cc [2021-11-19 14:47:47,892 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:47:47,895 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i [2021-11-19 14:47:47,954 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/data/e7d7c4c98/621c69836a864afabce34e15558520fd/FLAG1e559f7cc [2021-11-19 14:47:48,368 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/data/e7d7c4c98/621c69836a864afabce34e15558520fd [2021-11-19 14:47:48,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:47:48,379 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:47:48,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:47:48,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:47:48,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:47:48,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:47:48" (1/1) ... [2021-11-19 14:47:48,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b955c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:47:48, skipping insertion in model container [2021-11-19 14:47:48,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:47:48" (1/1) ... [2021-11-19 14:47:48,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:47:48,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:47:48,798 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_6496761a-0765-4f03-af18-f28e0f79524e/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4505,4518] [2021-11-19 14:47:48,804 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_6496761a-0765-4f03-af18-f28e0f79524e/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4565,4578] [2021-11-19 14:47:48,827 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:47:48,833 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:47:49,740 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:47:49,841 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:49,841 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:49,842 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:49,843 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:49,844 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:49,864 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:49,864 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:49,866 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:49,872 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:50,230 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:47:50,232 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:47:50,233 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:47:50,234 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:47:50,236 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:47:50,237 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:47:50,238 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:47:50,238 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:47:50,239 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:47:50,240 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:47:50,397 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:50,398 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:50,485 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:47:50,541 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:47:50,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2ec750a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:47:50, skipping insertion in model container [2021-11-19 14:47:50,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:47:50,542 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:47:50,544 INFO L158 Benchmark]: Toolchain (without parser) took 2164.24ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 51.0MB in the beginning and 85.7MB in the end (delta: -34.8MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2021-11-19 14:47:50,545 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 94.4MB. Free memory was 65.9MB in the beginning and 65.9MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:47:50,546 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2156.60ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 50.7MB in the beginning and 85.7MB in the end (delta: -35.0MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2021-11-19 14:47:50,547 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 94.4MB. Free memory was 65.9MB in the beginning and 65.9MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2156.60ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 50.7MB in the beginning and 85.7MB in the end (delta: -35.0MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2886]: 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_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/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_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/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_6496761a-0765-4f03-af18-f28e0f79524e/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 fd704c0997d5526a33ae946f9f6b6d8e05b412ad44e87cb653981b428eeb987a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:47:52,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:47:52,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:47:52,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:47:52,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:47:52,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:47:52,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:47:52,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:47:52,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:47:52,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:47:52,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:47:52,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:47:52,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:47:52,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:47:52,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:47:52,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:47:52,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:47:52,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:47:52,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:47:52,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:47:52,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:47:52,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:47:52,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:47:52,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:47:52,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:47:52,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:47:52,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:47:52,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:47:52,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:47:52,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:47:52,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:47:52,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:47:52,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:47:52,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:47:52,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:47:52,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:47:52,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:47:52,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:47:52,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:47:52,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:47:52,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:47:52,984 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:47:53,010 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:47:53,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:47:53,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:47:53,012 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:47:53,012 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:47:53,013 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:47:53,013 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:47:53,013 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:47:53,013 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:47:53,013 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:47:53,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:47:53,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:47:53,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:47:53,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:47:53,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:47:53,018 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:47:53,018 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:47:53,019 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:47:53,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:47:53,019 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:47:53,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:47:53,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:47:53,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:47:53,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:47:53,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:47:53,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:47:53,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:47:53,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:47:53,022 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:47:53,023 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:47:53,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:47:53,023 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:47:53,023 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:47:53,024 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_6496761a-0765-4f03-af18-f28e0f79524e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd704c0997d5526a33ae946f9f6b6d8e05b412ad44e87cb653981b428eeb987a [2021-11-19 14:47:53,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:47:53,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:47:53,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:47:53,459 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:47:53,459 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:47:53,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i [2021-11-19 14:47:53,530 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/data/6417b4a33/8bf6dc809962483aba9caa51ded0ecac/FLAG383e7fc6c [2021-11-19 14:47:54,516 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:47:54,517 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i [2021-11-19 14:47:54,559 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/data/6417b4a33/8bf6dc809962483aba9caa51ded0ecac/FLAG383e7fc6c [2021-11-19 14:47:55,053 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/data/6417b4a33/8bf6dc809962483aba9caa51ded0ecac [2021-11-19 14:47:55,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:47:55,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:47:55,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:47:55,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:47:55,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:47:55,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:47:55" (1/1) ... [2021-11-19 14:47:55,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38922cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:47:55, skipping insertion in model container [2021-11-19 14:47:55,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:47:55" (1/1) ... [2021-11-19 14:47:55,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:47:55,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:47:55,480 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_6496761a-0765-4f03-af18-f28e0f79524e/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4505,4518] [2021-11-19 14:47:55,485 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_6496761a-0765-4f03-af18-f28e0f79524e/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4565,4578] [2021-11-19 14:47:55,507 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:47:55,512 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:47:56,285 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:47:56,370 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:56,375 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:56,376 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:56,377 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:56,378 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:56,395 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:56,396 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:56,398 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:56,399 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:56,843 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:47:56,845 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:47:56,846 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:47:56,855 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:47:56,857 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:47:56,858 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:47:56,859 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:47:56,861 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:47:56,862 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:47:56,863 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:47:57,114 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:57,116 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:57,180 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:47:57,219 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:47:57,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:47:57,276 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_6496761a-0765-4f03-af18-f28e0f79524e/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4505,4518] [2021-11-19 14:47:57,277 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_6496761a-0765-4f03-af18-f28e0f79524e/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4565,4578] [2021-11-19 14:47:57,279 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:47:57,281 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:47:57,333 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:47:57,365 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:57,365 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:57,366 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:57,366 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:57,367 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:57,379 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:57,380 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:57,381 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:57,382 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:57,448 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:47:57,450 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:47:57,451 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:47:57,452 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:47:57,453 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:47:57,453 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:47:57,454 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:47:57,454 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:47:57,455 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:47:57,455 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:47:57,487 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:57,488 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:57,511 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:47:57,527 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:47:57,541 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_6496761a-0765-4f03-af18-f28e0f79524e/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4505,4518] [2021-11-19 14:47:57,541 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_6496761a-0765-4f03-af18-f28e0f79524e/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4565,4578] [2021-11-19 14:47:57,543 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:47:57,544 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:47:57,575 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:47:57,613 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:57,613 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:57,613 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:57,614 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:57,615 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:57,622 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:57,622 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:57,623 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:57,624 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:57,679 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:47:57,679 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:47:57,680 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:47:57,681 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:47:57,683 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:47:57,683 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:47:57,684 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:47:57,685 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:47:57,685 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:47:57,686 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:47:57,721 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:57,722 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:47:57,760 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:47:58,085 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:47:58,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:47:58 WrapperNode [2021-11-19 14:47:58,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:47:58,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:47:58,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:47:58,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:47:58,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:47:58" (1/1) ... [2021-11-19 14:47:58,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:47:58" (1/1) ... [2021-11-19 14:47:58,370 INFO L137 Inliner]: procedures = 711, calls = 1516, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 727 [2021-11-19 14:47:58,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:47:58,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:47:58,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:47:58,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:47:58,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:47:58" (1/1) ... [2021-11-19 14:47:58,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:47:58" (1/1) ... [2021-11-19 14:47:58,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:47:58" (1/1) ... [2021-11-19 14:47:58,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:47:58" (1/1) ... [2021-11-19 14:47:58,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:47:58" (1/1) ... [2021-11-19 14:47:58,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:47:58" (1/1) ... [2021-11-19 14:47:58,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:47:58" (1/1) ... [2021-11-19 14:47:58,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:47:58,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:47:58,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:47:58,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:47:58,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:47:58" (1/1) ... [2021-11-19 14:47:58,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:47:58,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:47:58,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:47:58,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:47:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-19 14:47:58,607 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-19 14:47:58,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:47:58,607 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-19 14:47:58,607 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-19 14:47:58,608 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 14:47:58,608 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 14:47:58,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:47:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:47:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:47:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-19 14:47:58,609 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-19 14:47:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-19 14:47:58,609 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-19 14:47:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:47:58,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:47:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:47:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:47:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:47:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:47:58,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:47:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 14:47:58,611 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 14:47:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:47:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:47:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-19 14:47:58,612 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-19 14:47:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-19 14:47:58,612 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-19 14:47:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-11-19 14:47:58,612 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-11-19 14:47:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:47:58,613 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:47:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:47:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-19 14:47:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:47:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:47:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:47:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:47:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 14:47:58,619 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 14:47:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-19 14:47:58,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-19 14:47:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-11-19 14:47:58,621 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-11-19 14:47:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-11-19 14:47:58,621 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-11-19 14:47:59,049 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:47:59,051 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:48:03,340 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:48:03,355 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:48:03,355 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-19 14:48:03,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:48:03 BoogieIcfgContainer [2021-11-19 14:48:03,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:48:03,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:48:03,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:48:03,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:48:03,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:47:55" (1/3) ... [2021-11-19 14:48:03,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a08cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:48:03, skipping insertion in model container [2021-11-19 14:48:03,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:47:58" (2/3) ... [2021-11-19 14:48:03,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a08cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:48:03, skipping insertion in model container [2021-11-19 14:48:03,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:48:03" (3/3) ... [2021-11-19 14:48:03,364 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_dynamic_harness.i [2021-11-19 14:48:03,370 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:48:03,370 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:48:03,423 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:48:03,430 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:48:03,430 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:48:03,453 INFO L276 IsEmpty]: Start isEmpty. Operand has 195 states, 127 states have (on average 1.2677165354330708) internal successors, (161), 127 states have internal predecessors, (161), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-11-19 14:48:03,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-19 14:48:03,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:48:03,466 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2021-11-19 14:48:03,467 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:48:03,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:48:03,473 INFO L85 PathProgramCache]: Analyzing trace with hash -124133439, now seen corresponding path program 1 times [2021-11-19 14:48:03,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:48:03,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915723681] [2021-11-19 14:48:03,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:48:03,491 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:48:03,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:48:03,495 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:48:03,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:48:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:48:04,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:48:04,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:04,673 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-11-19 14:48:04,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-19 14:48:04,930 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:48:04,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915723681] [2021-11-19 14:48:04,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915723681] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:48:04,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:48:04,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-19 14:48:04,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363469823] [2021-11-19 14:48:04,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:48:04,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:48:04,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:48:04,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:48:04,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:48:04,986 INFO L87 Difference]: Start difference. First operand has 195 states, 127 states have (on average 1.2677165354330708) internal successors, (161), 127 states have internal predecessors, (161), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 14:48:05,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:48:05,080 INFO L93 Difference]: Finished difference Result 385 states and 567 transitions. [2021-11-19 14:48:05,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:48:05,083 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 97 [2021-11-19 14:48:05,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:48:05,099 INFO L225 Difference]: With dead ends: 385 [2021-11-19 14:48:05,099 INFO L226 Difference]: Without dead ends: 188 [2021-11-19 14:48:05,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 192 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 14:48:05,115 INFO L933 BasicCegarLoop]: 259 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, 259 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 14:48:05,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:48:05,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-19 14:48:05,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-11-19 14:48:05,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 119 states have (on average 1.2352941176470589) internal successors, (147), 121 states have internal predecessors, (147), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-11-19 14:48:05,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 251 transitions. [2021-11-19 14:48:05,217 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 251 transitions. Word has length 97 [2021-11-19 14:48:05,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:48:05,219 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 251 transitions. [2021-11-19 14:48:05,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 14:48:05,220 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 251 transitions. [2021-11-19 14:48:05,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-19 14:48:05,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:48:05,226 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:48:05,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:48:05,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:48:05,447 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:48:05,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:48:05,448 INFO L85 PathProgramCache]: Analyzing trace with hash -214672736, now seen corresponding path program 1 times [2021-11-19 14:48:05,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:48:05,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426306297] [2021-11-19 14:48:05,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:48:05,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:48:05,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:48:05,453 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:48:05,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:48:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:48:06,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 1364 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:48:06,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:06,698 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-11-19 14:48:06,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:07,257 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-19 14:48:07,257 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:48:07,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426306297] [2021-11-19 14:48:07,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426306297] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:48:07,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:48:07,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-19 14:48:07,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63262024] [2021-11-19 14:48:07,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:48:07,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:48:07,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:48:07,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:48:07,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:48:07,263 INFO L87 Difference]: Start difference. First operand 188 states and 251 transitions. Second operand has 6 states, 5 states have (on average 11.2) internal successors, (56), 6 states have internal predecessors, (56), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 14:48:07,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:48:07,523 INFO L93 Difference]: Finished difference Result 366 states and 483 transitions. [2021-11-19 14:48:07,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:48:07,532 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 6 states have internal predecessors, (56), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 131 [2021-11-19 14:48:07,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:48:07,537 INFO L225 Difference]: With dead ends: 366 [2021-11-19 14:48:07,537 INFO L226 Difference]: Without dead ends: 188 [2021-11-19 14:48:07,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:48:07,546 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 13 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:48:07,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1203 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:48:07,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-19 14:48:07,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-11-19 14:48:07,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 119 states have (on average 1.226890756302521) internal successors, (146), 121 states have internal predecessors, (146), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-11-19 14:48:07,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 250 transitions. [2021-11-19 14:48:07,588 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 250 transitions. Word has length 131 [2021-11-19 14:48:07,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:48:07,589 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 250 transitions. [2021-11-19 14:48:07,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 6 states have internal predecessors, (56), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 14:48:07,589 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 250 transitions. [2021-11-19 14:48:07,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-19 14:48:07,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:48:07,592 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:48:07,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:48:07,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:48:07,807 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:48:07,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:48:07,807 INFO L85 PathProgramCache]: Analyzing trace with hash 636645442, now seen corresponding path program 1 times [2021-11-19 14:48:07,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:48:07,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345828579] [2021-11-19 14:48:07,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:48:07,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:48:07,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:48:07,827 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:48:07,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:48:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:48:08,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:48:08,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:09,028 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-11-19 14:48:09,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-19 14:48:09,747 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:48:09,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345828579] [2021-11-19 14:48:09,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345828579] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:48:09,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:48:09,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-11-19 14:48:09,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232270754] [2021-11-19 14:48:09,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:48:09,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:48:09,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:48:09,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:48:09,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:48:09,750 INFO L87 Difference]: Start difference. First operand 188 states and 250 transitions. Second operand has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 14:48:09,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:48:09,980 INFO L93 Difference]: Finished difference Result 368 states and 484 transitions. [2021-11-19 14:48:09,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:48:09,981 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 133 [2021-11-19 14:48:09,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:48:09,984 INFO L225 Difference]: With dead ends: 368 [2021-11-19 14:48:09,984 INFO L226 Difference]: Without dead ends: 190 [2021-11-19 14:48:09,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:48:09,986 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 14 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:48:09,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 1439 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:48:09,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-19 14:48:10,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2021-11-19 14:48:10,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 120 states have (on average 1.225) internal successors, (147), 122 states have internal predecessors, (147), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-11-19 14:48:10,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 251 transitions. [2021-11-19 14:48:10,021 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 251 transitions. Word has length 133 [2021-11-19 14:48:10,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:48:10,022 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 251 transitions. [2021-11-19 14:48:10,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 14:48:10,023 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 251 transitions. [2021-11-19 14:48:10,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-19 14:48:10,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:48:10,031 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:48:10,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:48:10,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:48:10,253 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:48:10,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:48:10,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1171439042, now seen corresponding path program 1 times [2021-11-19 14:48:10,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:48:10,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106745452] [2021-11-19 14:48:10,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:48:10,256 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:48:10,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:48:10,259 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:48:10,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:48:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:48:11,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 1382 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:48:11,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:11,556 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 153 proven. 1 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-19 14:48:11,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-11-19 14:48:12,364 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:48:12,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106745452] [2021-11-19 14:48:12,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106745452] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:48:12,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [881540226] [2021-11-19 14:48:12,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:48:12,365 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:48:12,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:48:12,367 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:48:12,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-19 14:48:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:48:14,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 1382 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:48:14,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:15,130 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 153 proven. 1 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-19 14:48:15,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:15,675 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-11-19 14:48:15,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [881540226] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:48:15,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297753500] [2021-11-19 14:48:15,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:48:15,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:48:15,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:48:15,677 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:48:15,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-19 14:48:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:48:16,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 1382 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:48:16,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:16,938 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 153 proven. 1 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-19 14:48:16,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:17,423 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-11-19 14:48:17,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297753500] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:48:17,424 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:48:17,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 13 [2021-11-19 14:48:17,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306697217] [2021-11-19 14:48:17,425 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:48:17,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:48:17,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:48:17,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:48:17,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:48:17,430 INFO L87 Difference]: Start difference. First operand 189 states and 251 transitions. Second operand has 13 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 13 states have internal predecessors, (80), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2021-11-19 14:48:17,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:48:17,798 INFO L93 Difference]: Finished difference Result 371 states and 487 transitions. [2021-11-19 14:48:17,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:48:17,799 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 13 states have internal predecessors, (80), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 137 [2021-11-19 14:48:17,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:48:17,802 INFO L225 Difference]: With dead ends: 371 [2021-11-19 14:48:17,802 INFO L226 Difference]: Without dead ends: 192 [2021-11-19 14:48:17,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 805 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:48:17,804 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 25 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:48:17,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 1685 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:48:17,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-19 14:48:17,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 191. [2021-11-19 14:48:17,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 122 states have (on average 1.221311475409836) internal successors, (149), 124 states have internal predecessors, (149), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-11-19 14:48:17,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 253 transitions. [2021-11-19 14:48:17,840 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 253 transitions. Word has length 137 [2021-11-19 14:48:17,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:48:17,843 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 253 transitions. [2021-11-19 14:48:17,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 13 states have internal predecessors, (80), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2021-11-19 14:48:17,843 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 253 transitions. [2021-11-19 14:48:17,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-19 14:48:17,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:48:17,850 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:48:17,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:48:18,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:48:18,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:48:18,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:48:18,459 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:48:18,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:48:18,459 INFO L85 PathProgramCache]: Analyzing trace with hash 104614978, now seen corresponding path program 2 times [2021-11-19 14:48:18,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:48:18,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853144610] [2021-11-19 14:48:18,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:48:18,461 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:48:18,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:48:18,462 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:48:18,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:48:18,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 14:48:18,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:48:18,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:48:18,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:19,273 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-11-19 14:48:19,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:19,555 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-11-19 14:48:19,556 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:48:19,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853144610] [2021-11-19 14:48:19,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853144610] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:48:19,556 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:48:19,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-19 14:48:19,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480202827] [2021-11-19 14:48:19,556 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:48:19,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:48:19,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:48:19,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:48:19,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:48:19,557 INFO L87 Difference]: Start difference. First operand 191 states and 253 transitions. Second operand has 7 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-19 14:48:19,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:48:19,677 INFO L93 Difference]: Finished difference Result 199 states and 261 transitions. [2021-11-19 14:48:19,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:48:19,678 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 141 [2021-11-19 14:48:19,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:48:19,680 INFO L225 Difference]: With dead ends: 199 [2021-11-19 14:48:19,681 INFO L226 Difference]: Without dead ends: 197 [2021-11-19 14:48:19,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:48:19,682 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 11 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:48:19,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 974 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:48:19,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-19 14:48:19,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2021-11-19 14:48:19,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 125 states have (on average 1.216) internal successors, (152), 128 states have internal predecessors, (152), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-19 14:48:19,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 258 transitions. [2021-11-19 14:48:19,699 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 258 transitions. Word has length 141 [2021-11-19 14:48:19,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:48:19,700 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 258 transitions. [2021-11-19 14:48:19,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-19 14:48:19,700 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 258 transitions. [2021-11-19 14:48:19,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-19 14:48:19,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:48:19,703 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:48:19,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:48:19,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:48:19,911 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:48:19,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:48:19,912 INFO L85 PathProgramCache]: Analyzing trace with hash 106462020, now seen corresponding path program 1 times [2021-11-19 14:48:19,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:48:19,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031055408] [2021-11-19 14:48:19,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:48:19,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:48:19,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:48:19,914 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:48:19,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:48:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:48:20,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 1395 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:48:20,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:21,136 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 161 proven. 4 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-19 14:48:21,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:21,988 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-11-19 14:48:21,988 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:48:21,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1031055408] [2021-11-19 14:48:21,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1031055408] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:48:21,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [463499616] [2021-11-19 14:48:21,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:48:21,989 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:48:21,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:48:21,990 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:48:22,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-19 14:48:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:48:24,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 1395 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:48:24,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:24,594 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 161 proven. 4 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-19 14:48:24,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:25,177 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-11-19 14:48:25,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [463499616] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:48:25,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114215695] [2021-11-19 14:48:25,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:48:25,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:48:25,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:48:25,183 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:48:25,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-19 14:48:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:48:26,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 1395 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:48:26,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:26,664 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 161 proven. 4 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-19 14:48:26,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:28,021 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-11-19 14:48:28,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114215695] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:48:28,021 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:48:28,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 10, 10] total 25 [2021-11-19 14:48:28,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117104698] [2021-11-19 14:48:28,022 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:48:28,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-19 14:48:28,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:48:28,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-19 14:48:28,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2021-11-19 14:48:28,025 INFO L87 Difference]: Start difference. First operand 196 states and 258 transitions. Second operand has 25 states, 22 states have (on average 4.5) internal successors, (99), 25 states have internal predecessors, (99), 8 states have call successors, (34), 2 states have call predecessors, (34), 7 states have return successors, (36), 8 states have call predecessors, (36), 8 states have call successors, (36) [2021-11-19 14:48:28,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:48:28,931 INFO L93 Difference]: Finished difference Result 385 states and 501 transitions. [2021-11-19 14:48:28,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:48:28,933 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 4.5) internal successors, (99), 25 states have internal predecessors, (99), 8 states have call successors, (34), 2 states have call predecessors, (34), 7 states have return successors, (36), 8 states have call predecessors, (36), 8 states have call successors, (36) Word has length 141 [2021-11-19 14:48:28,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:48:28,936 INFO L225 Difference]: With dead ends: 385 [2021-11-19 14:48:28,936 INFO L226 Difference]: Without dead ends: 199 [2021-11-19 14:48:28,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 817 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2021-11-19 14:48:28,939 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 55 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:48:28,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 2403 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:48:28,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-19 14:48:28,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2021-11-19 14:48:28,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 127 states have (on average 1.2125984251968505) internal successors, (154), 130 states have internal predecessors, (154), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-19 14:48:28,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 260 transitions. [2021-11-19 14:48:28,955 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 260 transitions. Word has length 141 [2021-11-19 14:48:28,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:48:28,956 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 260 transitions. [2021-11-19 14:48:28,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 4.5) internal successors, (99), 25 states have internal predecessors, (99), 8 states have call successors, (34), 2 states have call predecessors, (34), 7 states have return successors, (36), 8 states have call predecessors, (36), 8 states have call successors, (36) [2021-11-19 14:48:28,957 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 260 transitions. [2021-11-19 14:48:28,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-19 14:48:28,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:48:28,959 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:48:28,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-19 14:48:29,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-11-19 14:48:29,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:48:29,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:48:29,580 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:48:29,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:48:29,580 INFO L85 PathProgramCache]: Analyzing trace with hash 600214212, now seen corresponding path program 2 times [2021-11-19 14:48:29,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:48:29,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971437363] [2021-11-19 14:48:29,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:48:29,582 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:48:29,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:48:29,583 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:48:29,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:48:45,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:48:45,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:48:45,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:48:45,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:46,334 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 173 proven. 9 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 14:48:46,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:47,430 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-11-19 14:48:47,430 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:48:47,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971437363] [2021-11-19 14:48:47,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971437363] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:48:47,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [18159851] [2021-11-19 14:48:47,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:48:47,431 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:48:47,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:48:47,432 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:48:47,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-19 14:50:00,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:50:00,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:50:00,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:50:00,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:50:01,028 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 173 proven. 9 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 14:50:01,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:50:01,635 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-11-19 14:50:01,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [18159851] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:50:01,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583660474] [2021-11-19 14:50:01,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:50:01,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:50:01,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:50:01,645 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:50:01,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-19 14:51:27,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:51:27,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:51:27,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:51:27,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:28,383 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 173 proven. 9 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 14:51:28,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:30,095 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-11-19 14:51:30,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583660474] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:51:30,096 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:51:30,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 11, 11] total 28 [2021-11-19 14:51:30,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141496198] [2021-11-19 14:51:30,097 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:51:30,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-19 14:51:30,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:30,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-19 14:51:30,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2021-11-19 14:51:30,100 INFO L87 Difference]: Start difference. First operand 198 states and 260 transitions. Second operand has 28 states, 25 states have (on average 4.2) internal successors, (105), 28 states have internal predecessors, (105), 8 states have call successors, (34), 2 states have call predecessors, (34), 7 states have return successors, (36), 8 states have call predecessors, (36), 8 states have call successors, (36) [2021-11-19 14:51:31,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:31,508 INFO L93 Difference]: Finished difference Result 389 states and 505 transitions. [2021-11-19 14:51:31,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:51:31,512 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 4.2) internal successors, (105), 28 states have internal predecessors, (105), 8 states have call successors, (34), 2 states have call predecessors, (34), 7 states have return successors, (36), 8 states have call predecessors, (36), 8 states have call successors, (36) Word has length 145 [2021-11-19 14:51:31,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:31,514 INFO L225 Difference]: With dead ends: 389 [2021-11-19 14:51:31,515 INFO L226 Difference]: Without dead ends: 201 [2021-11-19 14:51:31,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 838 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=197, Invalid=925, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 14:51:31,517 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 81 mSDsluCounter, 2644 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 2887 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:31,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 2887 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:51:31,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-19 14:51:31,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2021-11-19 14:51:31,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 129 states have (on average 1.2093023255813953) internal successors, (156), 132 states have internal predecessors, (156), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-19 14:51:31,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 262 transitions. [2021-11-19 14:51:31,533 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 262 transitions. Word has length 145 [2021-11-19 14:51:31,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:31,533 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 262 transitions. [2021-11-19 14:51:31,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 4.2) internal successors, (105), 28 states have internal predecessors, (105), 8 states have call successors, (34), 2 states have call predecessors, (34), 7 states have return successors, (36), 8 states have call predecessors, (36), 8 states have call successors, (36) [2021-11-19 14:51:31,534 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 262 transitions. [2021-11-19 14:51:31,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-19 14:51:31,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:31,536 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:51:31,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:31,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:31,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-19 14:51:32,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:32,152 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:51:32,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:32,152 INFO L85 PathProgramCache]: Analyzing trace with hash -115057852, now seen corresponding path program 3 times [2021-11-19 14:51:32,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:32,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273005400] [2021-11-19 14:51:32,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:51:32,154 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:32,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:32,155 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:32,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:51:47,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-19 14:51:47,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:51:47,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 1200 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:51:47,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:48,263 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 59 proven. 16 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2021-11-19 14:51:48,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:50,006 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 50 proven. 16 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-11-19 14:51:50,007 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:50,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273005400] [2021-11-19 14:51:50,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273005400] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:51:50,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1344543977] [2021-11-19 14:51:50,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:51:50,008 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:51:50,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:51:50,032 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:51:50,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-19 14:53:12,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-19 14:53:12,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:53:12,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 1200 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:53:12,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:53:13,124 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 59 proven. 16 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2021-11-19 14:53:13,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:53:14,067 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 50 proven. 16 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-11-19 14:53:14,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1344543977] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:53:14,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580967957] [2021-11-19 14:53:14,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:53:14,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:53:14,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:53:14,069 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:53:14,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-19 14:55:33,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-19 14:55:33,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:55:33,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 1200 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:55:33,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:55:34,383 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 59 proven. 16 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2021-11-19 14:55:34,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:55:35,421 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 50 proven. 16 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-11-19 14:55:35,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580967957] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:55:35,422 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:55:35,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 12, 12] total 21 [2021-11-19 14:55:35,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085145038] [2021-11-19 14:55:35,422 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:55:35,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-19 14:55:35,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:55:35,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-19 14:55:35,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:55:35,425 INFO L87 Difference]: Start difference. First operand 200 states and 262 transitions. Second operand has 21 states, 19 states have (on average 4.157894736842105) internal successors, (79), 21 states have internal predecessors, (79), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2021-11-19 14:55:36,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:55:36,583 INFO L93 Difference]: Finished difference Result 393 states and 509 transitions. [2021-11-19 14:55:36,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 14:55:36,591 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 4.157894736842105) internal successors, (79), 21 states have internal predecessors, (79), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) Word has length 149 [2021-11-19 14:55:36,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:55:36,593 INFO L225 Difference]: With dead ends: 393 [2021-11-19 14:55:36,593 INFO L226 Difference]: Without dead ends: 203 [2021-11-19 14:55:36,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 895 GetRequests, 867 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2021-11-19 14:55:36,595 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 47 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 2169 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:55:36,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 2169 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:55:36,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-19 14:55:36,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2021-11-19 14:55:36,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 131 states have (on average 1.2061068702290076) internal successors, (158), 134 states have internal predecessors, (158), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-19 14:55:36,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 264 transitions. [2021-11-19 14:55:36,609 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 264 transitions. Word has length 149 [2021-11-19 14:55:36,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:55:36,610 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 264 transitions. [2021-11-19 14:55:36,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 4.157894736842105) internal successors, (79), 21 states have internal predecessors, (79), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2021-11-19 14:55:36,610 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 264 transitions. [2021-11-19 14:55:36,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-19 14:55:36,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:55:36,613 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:55:36,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:55:36,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-19 14:55:37,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:55:37,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:55:37,240 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:55:37,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:55:37,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2083705660, now seen corresponding path program 4 times [2021-11-19 14:55:37,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:55:37,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518907275] [2021-11-19 14:55:37,242 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 14:55:37,242 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:55:37,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:55:37,243 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:55:37,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 14:55:38,018 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 14:55:38,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:55:38,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 1425 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:55:38,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:55:38,580 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 209 proven. 25 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-11-19 14:55:38,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:55:40,003 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-11-19 14:55:40,003 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:55:40,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518907275] [2021-11-19 14:55:40,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518907275] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:55:40,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [706933446] [2021-11-19 14:55:40,003 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 14:55:40,003 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:55:40,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:55:40,004 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:55:40,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-19 14:55:42,454 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 14:55:42,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:55:42,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 1425 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:55:42,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:55:42,971 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 209 proven. 25 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-11-19 14:55:42,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:55:43,642 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-11-19 14:55:43,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [706933446] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:55:43,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413237558] [2021-11-19 14:55:43,642 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 14:55:43,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:55:43,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:55:43,643 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:55:43,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-19 14:55:44,511 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 14:55:44,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:55:44,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 1425 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:55:44,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:55:45,250 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 209 proven. 25 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-11-19 14:55:45,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:55:47,357 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-11-19 14:55:47,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413237558] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:55:47,357 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:55:47,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 13, 13] total 34 [2021-11-19 14:55:47,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781405329] [2021-11-19 14:55:47,358 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:55:47,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-19 14:55:47,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:55:47,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-19 14:55:47,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 14:55:47,361 INFO L87 Difference]: Start difference. First operand 202 states and 264 transitions. Second operand has 34 states, 31 states have (on average 3.774193548387097) internal successors, (117), 34 states have internal predecessors, (117), 8 states have call successors, (34), 2 states have call predecessors, (34), 7 states have return successors, (36), 8 states have call predecessors, (36), 8 states have call successors, (36) [2021-11-19 14:55:49,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:55:49,197 INFO L93 Difference]: Finished difference Result 397 states and 513 transitions. [2021-11-19 14:55:49,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 14:55:49,198 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 3.774193548387097) internal successors, (117), 34 states have internal predecessors, (117), 8 states have call successors, (34), 2 states have call predecessors, (34), 7 states have return successors, (36), 8 states have call predecessors, (36), 8 states have call successors, (36) Word has length 153 [2021-11-19 14:55:49,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:55:49,200 INFO L225 Difference]: With dead ends: 397 [2021-11-19 14:55:49,200 INFO L226 Difference]: Without dead ends: 205 [2021-11-19 14:55:49,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 920 GetRequests, 880 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=267, Invalid=1455, Unknown=0, NotChecked=0, Total=1722 [2021-11-19 14:55:49,202 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 62 mSDsluCounter, 4084 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 4327 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:55:49,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 4327 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:55:49,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-19 14:55:49,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2021-11-19 14:55:49,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 133 states have (on average 1.2030075187969924) internal successors, (160), 136 states have internal predecessors, (160), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-19 14:55:49,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 266 transitions. [2021-11-19 14:55:49,214 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 266 transitions. Word has length 153 [2021-11-19 14:55:49,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:55:49,215 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 266 transitions. [2021-11-19 14:55:49,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 3.774193548387097) internal successors, (117), 34 states have internal predecessors, (117), 8 states have call successors, (34), 2 states have call predecessors, (34), 7 states have return successors, (36), 8 states have call predecessors, (36), 8 states have call successors, (36) [2021-11-19 14:55:49,215 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 266 transitions. [2021-11-19 14:55:49,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-19 14:55:49,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:55:49,218 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:55:49,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-19 14:55:49,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 14:55:49,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-19 14:55:49,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:55:49,828 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:55:49,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:55:49,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1737244484, now seen corresponding path program 5 times [2021-11-19 14:55:49,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:55:49,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997243042] [2021-11-19 14:55:49,830 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 14:55:49,830 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:55:49,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:55:49,831 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:55:49,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 14:55:50,459 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-11-19 14:55:50,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:55:50,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 14:55:50,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:55:51,246 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 233 proven. 36 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-11-19 14:55:51,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:55:53,729 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-11-19 14:55:53,729 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:55:53,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997243042] [2021-11-19 14:55:53,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997243042] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:55:53,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1913120192] [2021-11-19 14:55:53,730 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 14:55:53,730 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:55:53,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:55:53,735 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:55:53,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-19 14:55:54,718 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 14:55:54,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590328700] [2021-11-19 14:55:54,719 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 14:55:54,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:55:54,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:55:54,720 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:55:54,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-19 14:55:54,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 1 [2021-11-19 14:56:27,774 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-11-19 14:56:27,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:56:27,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 14:56:27,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:56:28,333 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 233 proven. 36 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-11-19 14:56:28,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:56:29,570 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-11-19 14:56:29,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590328700] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:56:29,571 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-19 14:56:29,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14] total 25 [2021-11-19 14:56:29,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964304008] [2021-11-19 14:56:29,571 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-19 14:56:29,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-19 14:56:29,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:56:29,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-19 14:56:29,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2021-11-19 14:56:29,573 INFO L87 Difference]: Start difference. First operand 204 states and 266 transitions. Second operand has 25 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 25 states have internal predecessors, (100), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2021-11-19 14:56:31,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:56:31,183 INFO L93 Difference]: Finished difference Result 401 states and 517 transitions. [2021-11-19 14:56:31,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-19 14:56:31,184 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 25 states have internal predecessors, (100), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 157 [2021-11-19 14:56:31,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:56:31,187 INFO L225 Difference]: With dead ends: 401 [2021-11-19 14:56:31,187 INFO L226 Difference]: Without dead ends: 207 [2021-11-19 14:56:31,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 600 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=165, Invalid=957, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 14:56:31,189 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 45 mSDsluCounter, 3122 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3365 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:56:31,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 3365 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:56:31,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-19 14:56:31,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2021-11-19 14:56:31,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 135 states have (on average 1.2) internal successors, (162), 138 states have internal predecessors, (162), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-19 14:56:31,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 268 transitions. [2021-11-19 14:56:31,201 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 268 transitions. Word has length 157 [2021-11-19 14:56:31,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:56:31,202 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 268 transitions. [2021-11-19 14:56:31,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 25 states have internal predecessors, (100), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2021-11-19 14:56:31,202 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 268 transitions. [2021-11-19 14:56:31,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-19 14:56:31,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:56:31,205 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:56:31,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-19 14:56:31,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 14:56:31,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:56:31,627 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:56:31,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:56:31,628 INFO L85 PathProgramCache]: Analyzing trace with hash -224603452, now seen corresponding path program 6 times [2021-11-19 14:56:31,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:56:31,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129412753] [2021-11-19 14:56:31,629 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-19 14:56:31,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:56:31,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:56:31,630 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:56:31,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6496761a-0765-4f03-af18-f28e0f79524e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process