./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF --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 efb3bc3d53d5de978717fadeb26804aec5f97721ade955fc2d1463ef24ff6010 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:39:49,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:39:49,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:39:49,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:39:49,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:39:49,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:39:49,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:39:49,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:39:49,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:39:49,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:39:49,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:39:49,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:39:49,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:39:49,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:39:49,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:39:49,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:39:49,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:39:49,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:39:49,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:39:49,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:39:49,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:39:49,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:39:49,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:39:49,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:39:49,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:39:49,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:39:49,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:39:49,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:39:49,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:39:49,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:39:49,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:39:49,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:39:49,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:39:49,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:39:49,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:39:49,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:39:49,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:39:49,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:39:49,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:39:49,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:39:49,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:39:49,503 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 22:39:49,529 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:39:49,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:39:49,530 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:39:49,531 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:39:49,531 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:39:49,531 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:39:49,532 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:39:49,532 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:39:49,535 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:39:49,535 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:39:49,536 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:39:49,536 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:39:49,536 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:39:49,536 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:39:49,537 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:39:49,537 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:39:49,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:39:49,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:39:49,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:39:49,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:39:49,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:39:49,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:39:49,541 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:39:49,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:39:49,542 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:39:49,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:39:49,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:39:49,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:39:49,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:39:49,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:39:49,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:39:49,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:39:49,545 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:39:49,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:39:49,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:39:49,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:39:49,546 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:39:49,547 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_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efb3bc3d53d5de978717fadeb26804aec5f97721ade955fc2d1463ef24ff6010 [2021-11-12 22:39:49,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:39:49,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:39:49,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:39:49,843 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:39:49,844 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:39:49,846 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i [2021-11-12 22:39:49,957 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/data/4d2d57c04/2001c01f7d1f4a4494897bf3edb07a0b/FLAG8cb2bb30d [2021-11-12 22:39:50,769 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:39:50,769 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i [2021-11-12 22:39:50,829 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/data/4d2d57c04/2001c01f7d1f4a4494897bf3edb07a0b/FLAG8cb2bb30d [2021-11-12 22:39:51,296 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/data/4d2d57c04/2001c01f7d1f4a4494897bf3edb07a0b [2021-11-12 22:39:51,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:39:51,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:39:51,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:39:51,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:39:51,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:39:51,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:39:51" (1/1) ... [2021-11-12 22:39:51,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11bd2ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:51, skipping insertion in model container [2021-11-12 22:39:51,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:39:51" (1/1) ... [2021-11-12 22:39:51,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:39:51,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:39:51,740 WARN L228 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_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4501,4514] [2021-11-12 22:39:51,746 WARN L228 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_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4561,4574] [2021-11-12 22:39:51,766 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:39:51,771 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:39:52,537 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:39:52,624 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:52,625 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:52,625 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:52,626 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:52,627 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:52,640 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:52,641 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:52,643 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:52,644 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:53,060 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:39:53,061 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:39:53,062 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:39:53,073 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:39:53,076 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:39:53,077 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:39:53,078 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:39:53,083 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:39:53,086 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:39:53,087 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:39:53,316 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:53,316 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:53,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:39:53,500 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) [2021-11-12 22:39:53,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3f461cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:53, skipping insertion in model container [2021-11-12 22:39:53,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:39:53,502 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:39:53,503 INFO L158 Benchmark]: Toolchain (without parser) took 2197.19ms. Allocated memory was 90.2MB in the beginning and 123.7MB in the end (delta: 33.6MB). Free memory was 50.0MB in the beginning and 88.3MB in the end (delta: -38.3MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2021-11-12 22:39:53,504 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 90.2MB. Free memory is still 44.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:39:53,505 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2180.30ms. Allocated memory was 90.2MB in the beginning and 123.7MB in the end (delta: 33.6MB). Free memory was 49.8MB in the beginning and 88.3MB in the end (delta: -38.5MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2021-11-12 22:39:53,507 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 90.2MB. Free memory is still 44.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2180.30ms. Allocated memory was 90.2MB in the beginning and 123.7MB in the end (delta: 33.6MB). Free memory was 49.8MB in the beginning and 88.3MB in the end (delta: -38.5MB). Peak memory consumption was 24.2MB. 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_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF --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 efb3bc3d53d5de978717fadeb26804aec5f97721ade955fc2d1463ef24ff6010 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:39:55,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:39:55,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:39:55,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:39:55,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:39:55,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:39:55,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:39:55,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:39:55,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:39:55,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:39:55,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:39:55,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:39:55,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:39:55,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:39:55,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:39:55,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:39:55,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:39:55,920 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:39:55,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:39:55,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:39:55,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:39:55,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:39:55,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:39:55,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:39:55,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:39:55,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:39:55,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:39:55,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:39:55,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:39:55,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:39:55,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:39:55,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:39:55,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:39:55,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:39:55,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:39:55,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:39:55,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:39:55,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:39:55,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:39:55,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:39:55,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:39:55,973 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 22:39:56,025 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:39:56,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:39:56,027 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:39:56,028 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:39:56,028 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:39:56,028 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:39:56,029 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:39:56,029 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:39:56,029 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:39:56,029 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:39:56,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:39:56,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:39:56,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:39:56,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:39:56,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:39:56,033 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:39:56,033 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:39:56,034 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:39:56,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:39:56,034 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:39:56,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:39:56,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:39:56,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:39:56,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:39:56,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:39:56,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:39:56,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:39:56,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:39:56,036 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:39:56,037 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:39:56,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:39:56,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:39:56,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:39:56,038 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_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efb3bc3d53d5de978717fadeb26804aec5f97721ade955fc2d1463ef24ff6010 [2021-11-12 22:39:56,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:39:56,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:39:56,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:39:56,456 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:39:56,457 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:39:56,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i [2021-11-12 22:39:56,528 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/data/80705dd66/4b337450c18c4133bf647e8c67eb0295/FLAG835437423 [2021-11-12 22:39:57,490 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:39:57,492 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i [2021-11-12 22:39:57,542 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/data/80705dd66/4b337450c18c4133bf647e8c67eb0295/FLAG835437423 [2021-11-12 22:39:57,981 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/data/80705dd66/4b337450c18c4133bf647e8c67eb0295 [2021-11-12 22:39:57,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:39:57,987 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:39:57,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:39:57,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:39:57,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:39:57,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:39:57" (1/1) ... [2021-11-12 22:39:57,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79ab2777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:57, skipping insertion in model container [2021-11-12 22:39:57,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:39:57" (1/1) ... [2021-11-12 22:39:58,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:39:58,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:39:58,548 WARN L228 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_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4501,4514] [2021-11-12 22:39:58,558 WARN L228 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_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4561,4574] [2021-11-12 22:39:58,583 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:39:58,591 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:39:59,692 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:39:59,788 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:59,789 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:59,790 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:59,791 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:59,794 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:59,833 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:59,844 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:59,846 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:59,847 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:00,288 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:40:00,289 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:40:00,290 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:40:00,291 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:40:00,292 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:40:00,293 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:40:00,296 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:40:00,297 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:40:00,298 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:40:00,298 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:40:00,439 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:00,440 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:00,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:40:00,561 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:40:00,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:40:00,603 WARN L228 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_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4501,4514] [2021-11-12 22:40:00,604 WARN L228 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_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4561,4574] [2021-11-12 22:40:00,606 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:40:00,607 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:40:00,650 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:40:00,668 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:00,669 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:00,669 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:00,670 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:00,670 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:00,678 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:00,679 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:00,680 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:00,681 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:00,723 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:40:00,724 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:40:00,729 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:40:00,730 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:40:00,731 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:40:00,731 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:40:00,732 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:40:00,733 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:40:00,733 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:40:00,733 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:40:00,806 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:00,806 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:00,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:40:00,883 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:40:00,909 WARN L228 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_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4501,4514] [2021-11-12 22:40:00,910 WARN L228 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_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4561,4574] [2021-11-12 22:40:00,911 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:40:00,914 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:40:00,961 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:40:00,988 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:00,988 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:00,989 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:00,989 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:00,990 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:00,997 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:00,998 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:00,999 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:00,999 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:01,073 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:40:01,074 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:40:01,075 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:40:01,076 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:40:01,076 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:40:01,077 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:40:01,078 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:40:01,078 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:40:01,079 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:40:01,079 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:40:01,116 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:01,116 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:40:01,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:40:01,463 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:40:01,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:01 WrapperNode [2021-11-12 22:40:01,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:40:01,465 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:40:01,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:40:01,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:40:01,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:01" (1/1) ... [2021-11-12 22:40:01,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:01" (1/1) ... [2021-11-12 22:40:01,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:40:01,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:40:01,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:40:01,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:40:01,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:01" (1/1) ... [2021-11-12 22:40:01,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:01" (1/1) ... [2021-11-12 22:40:01,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:01" (1/1) ... [2021-11-12 22:40:01,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:01" (1/1) ... [2021-11-12 22:40:01,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:01" (1/1) ... [2021-11-12 22:40:01,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:01" (1/1) ... [2021-11-12 22:40:01,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:01" (1/1) ... [2021-11-12 22:40:01,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:40:01,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:40:01,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:40:01,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:40:01,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:01" (1/1) ... [2021-11-12 22:40:01,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:40:01,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:40:01,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:40:01,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:40:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-12 22:40:01,867 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-12 22:40:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:40:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-12 22:40:01,868 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-12 22:40:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-12 22:40:01,868 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-12 22:40:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 22:40:01,868 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 22:40:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:40:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 22:40:01,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 22:40:01,871 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-12 22:40:01,871 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-12 22:40:01,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 22:40:01,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 22:40:01,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:40:01,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:40:01,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:40:01,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:40:01,872 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_clean_up [2021-11-12 22:40:01,872 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_clean_up [2021-11-12 22:40:01,872 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 22:40:01,872 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 22:40:01,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:40:01,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 22:40:01,873 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-12 22:40:01,873 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-12 22:40:01,874 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-11-12 22:40:01,874 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-11-12 22:40:01,874 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-12 22:40:01,874 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-12 22:40:01,875 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 22:40:01,875 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 22:40:01,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:40:01,875 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-12 22:40:01,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:40:01,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 22:40:01,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 22:40:01,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 22:40:01,880 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-12 22:40:01,880 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-12 22:40:01,880 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-12 22:40:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-12 22:40:01,882 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-11-12 22:40:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-11-12 22:40:01,882 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-11-12 22:40:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-11-12 22:40:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-12 22:40:01,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-12 22:40:15,234 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:40:15,234 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-12 22:40:15,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:40:15 BoogieIcfgContainer [2021-11-12 22:40:15,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:40:15,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:40:15,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:40:15,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:40:15,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:39:57" (1/3) ... [2021-11-12 22:40:15,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3360b83d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:40:15, skipping insertion in model container [2021-11-12 22:40:15,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:40:01" (2/3) ... [2021-11-12 22:40:15,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3360b83d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:40:15, skipping insertion in model container [2021-11-12 22:40:15,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:40:15" (3/3) ... [2021-11-12 22:40:15,251 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_clean_up_harness.i [2021-11-12 22:40:15,256 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:40:15,256 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:40:15,315 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:40:15,325 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 [2021-11-12 22:40:15,326 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:40:15,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 165 states, 112 states have (on average 1.2678571428571428) internal successors, (142), 113 states have internal predecessors, (142), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-12 22:40:15,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-12 22:40:15,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:15,378 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:40:15,378 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:40:15,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:15,384 INFO L85 PathProgramCache]: Analyzing trace with hash 432166812, now seen corresponding path program 1 times [2021-11-12 22:40:15,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:40:15,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875398693] [2021-11-12 22:40:15,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:40:15,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:40:15,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:40:15,410 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:40:15,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:40:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:40:19,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:40:19,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:40:19,827 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-12 22:40:19,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:40:20,158 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-12 22:40:20,159 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:40:20,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875398693] [2021-11-12 22:40:20,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875398693] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:40:20,160 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:40:20,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:40:20,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867168081] [2021-11-12 22:40:20,163 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:40:20,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:40:20,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:40:20,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:40:20,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:40:20,207 INFO L87 Difference]: Start difference. First operand has 165 states, 112 states have (on average 1.2678571428571428) internal successors, (142), 113 states have internal predecessors, (142), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-12 22:40:20,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:40:20,279 INFO L93 Difference]: Finished difference Result 319 states and 435 transitions. [2021-11-12 22:40:20,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:40:20,281 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 105 [2021-11-12 22:40:20,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:40:20,296 INFO L225 Difference]: With dead ends: 319 [2021-11-12 22:40:20,296 INFO L226 Difference]: Without dead ends: 160 [2021-11-12 22:40:20,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:40:20,310 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.39ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:40:20,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 5.39ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:40:20,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-12 22:40:20,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-11-12 22:40:20,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 107 states have (on average 1.233644859813084) internal successors, (132), 109 states have internal predecessors, (132), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-12 22:40:20,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 201 transitions. [2021-11-12 22:40:20,398 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 201 transitions. Word has length 105 [2021-11-12 22:40:20,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:40:20,400 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 201 transitions. [2021-11-12 22:40:20,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-12 22:40:20,400 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 201 transitions. [2021-11-12 22:40:20,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-12 22:40:20,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:20,408 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:40:20,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:40:20,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:40:20,624 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:40:20,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:20,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1130672400, now seen corresponding path program 1 times [2021-11-12 22:40:20,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:40:20,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422843683] [2021-11-12 22:40:20,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:40:20,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:40:20,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:40:20,634 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:40:20,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:40:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:40:24,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 1704 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:40:24,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:40:24,991 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-12 22:40:24,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:40:25,475 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-12 22:40:25,475 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:40:25,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422843683] [2021-11-12 22:40:25,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422843683] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:40:25,476 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:40:25,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-12 22:40:25,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797811876] [2021-11-12 22:40:25,476 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:40:25,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:40:25,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:40:25,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:40:25,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:40:25,480 INFO L87 Difference]: Start difference. First operand 160 states and 201 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-12 22:40:25,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:40:25,616 INFO L93 Difference]: Finished difference Result 256 states and 319 transitions. [2021-11-12 22:40:25,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:40:25,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 122 [2021-11-12 22:40:25,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:40:25,620 INFO L225 Difference]: With dead ends: 256 [2021-11-12 22:40:25,621 INFO L226 Difference]: Without dead ends: 160 [2021-11-12 22:40:25,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:40:25,622 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 55 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.75ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84.52ms IncrementalHoareTripleChecker+Time [2021-11-12 22:40:25,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 558 Invalid, 22 Unknown, 0 Unchecked, 5.75ms Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 84.52ms Time] [2021-11-12 22:40:25,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-12 22:40:25,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-11-12 22:40:25,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 107 states have (on average 1.2242990654205608) internal successors, (131), 109 states have internal predecessors, (131), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-12 22:40:25,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 200 transitions. [2021-11-12 22:40:25,686 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 200 transitions. Word has length 122 [2021-11-12 22:40:25,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:40:25,688 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 200 transitions. [2021-11-12 22:40:25,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-12 22:40:25,689 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 200 transitions. [2021-11-12 22:40:25,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-12 22:40:25,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:25,695 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:40:25,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:40:25,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:40:25,916 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:40:25,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:25,917 INFO L85 PathProgramCache]: Analyzing trace with hash -2103837312, now seen corresponding path program 1 times [2021-11-12 22:40:25,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:40:25,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685350929] [2021-11-12 22:40:25,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:40:25,924 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:40:25,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:40:25,926 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:40:25,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:40:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:40:29,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:40:29,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:40:30,306 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-12 22:40:30,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:40:30,999 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-12 22:40:30,999 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:40:30,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685350929] [2021-11-12 22:40:30,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685350929] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:40:30,999 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:40:30,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-11-12 22:40:30,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573727471] [2021-11-12 22:40:31,000 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:40:31,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 22:40:31,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:40:31,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 22:40:31,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:40:31,001 INFO L87 Difference]: Start difference. First operand 160 states and 200 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2021-11-12 22:40:31,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:40:31,443 INFO L93 Difference]: Finished difference Result 275 states and 348 transitions. [2021-11-12 22:40:31,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:40:31,444 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) Word has length 130 [2021-11-12 22:40:31,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:40:31,447 INFO L225 Difference]: With dead ends: 275 [2021-11-12 22:40:31,448 INFO L226 Difference]: Without dead ends: 162 [2021-11-12 22:40:31,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-12 22:40:31,450 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 94 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 328.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.42ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 367.24ms IncrementalHoareTripleChecker+Time [2021-11-12 22:40:31,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 1053 Invalid, 98 Unknown, 0 Unchecked, 8.42ms Time], IncrementalHoareTripleChecker [7 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 367.24ms Time] [2021-11-12 22:40:31,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-12 22:40:31,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-11-12 22:40:31,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 108 states have (on average 1.2222222222222223) internal successors, (132), 111 states have internal predecessors, (132), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (36), 34 states have call predecessors, (36), 34 states have call successors, (36) [2021-11-12 22:40:31,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 203 transitions. [2021-11-12 22:40:31,465 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 203 transitions. Word has length 130 [2021-11-12 22:40:31,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:40:31,466 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 203 transitions. [2021-11-12 22:40:31,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2021-11-12 22:40:31,466 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 203 transitions. [2021-11-12 22:40:31,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-12 22:40:31,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:31,472 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:40:31,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:40:31,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:40:31,693 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:40:31,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:31,694 INFO L85 PathProgramCache]: Analyzing trace with hash -209170488, now seen corresponding path program 1 times [2021-11-12 22:40:31,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:40:31,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601211872] [2021-11-12 22:40:31,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:40:31,697 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:40:31,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:40:31,698 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:40:31,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:40:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:40:36,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 1814 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:40:36,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:40:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-12 22:40:36,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:40:37,130 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-12 22:40:37,130 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:40:37,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601211872] [2021-11-12 22:40:37,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601211872] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:40:37,131 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:40:37,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-12 22:40:37,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257102886] [2021-11-12 22:40:37,131 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:40:37,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:40:37,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:40:37,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:40:37,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:40:37,133 INFO L87 Difference]: Start difference. First operand 162 states and 203 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 5 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 5 states have call predecessors, (30), 5 states have call successors, (30) [2021-11-12 22:40:37,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:40:37,495 INFO L93 Difference]: Finished difference Result 261 states and 324 transitions. [2021-11-12 22:40:37,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:40:37,497 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 5 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 5 states have call predecessors, (30), 5 states have call successors, (30) Word has length 145 [2021-11-12 22:40:37,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:40:37,500 INFO L225 Difference]: With dead ends: 261 [2021-11-12 22:40:37,500 INFO L226 Difference]: Without dead ends: 162 [2021-11-12 22:40:37,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:40:37,501 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 52 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 251.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.48ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 277.96ms IncrementalHoareTripleChecker+Time [2021-11-12 22:40:37,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 1213 Invalid, 63 Unknown, 0 Unchecked, 6.48ms Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 277.96ms Time] [2021-11-12 22:40:37,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-12 22:40:37,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-11-12 22:40:37,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 108 states have (on average 1.212962962962963) internal successors, (131), 111 states have internal predecessors, (131), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (36), 34 states have call predecessors, (36), 34 states have call successors, (36) [2021-11-12 22:40:37,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 202 transitions. [2021-11-12 22:40:37,524 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 202 transitions. Word has length 145 [2021-11-12 22:40:37,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:40:37,524 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 202 transitions. [2021-11-12 22:40:37,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 5 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 5 states have call predecessors, (30), 5 states have call successors, (30) [2021-11-12 22:40:37,525 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 202 transitions. [2021-11-12 22:40:37,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-12 22:40:37,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:37,527 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:40:37,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:40:37,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:40:37,731 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:40:37,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:37,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1337604585, now seen corresponding path program 1 times [2021-11-12 22:40:37,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:40:37,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047211391] [2021-11-12 22:40:37,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:40:37,734 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:40:37,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:40:37,735 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:40:37,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:40:41,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:40:41,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:40:41,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:40:42,574 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-12 22:40:42,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:40:43,416 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-12 22:40:43,417 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:40:43,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047211391] [2021-11-12 22:40:43,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047211391] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:40:43,417 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:40:43,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 11 [2021-11-12 22:40:43,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595362711] [2021-11-12 22:40:43,418 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:40:43,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 22:40:43,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:40:43,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 22:40:43,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-12 22:40:43,420 INFO L87 Difference]: Start difference. First operand 162 states and 202 transitions. Second operand has 11 states, 11 states have (on average 10.0) internal successors, (110), 11 states have internal predecessors, (110), 7 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 6 states have call predecessors, (32), 7 states have call successors, (32) [2021-11-12 22:40:44,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:40:44,221 INFO L93 Difference]: Finished difference Result 274 states and 342 transitions. [2021-11-12 22:40:44,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 22:40:44,222 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 11 states have internal predecessors, (110), 7 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 6 states have call predecessors, (32), 7 states have call successors, (32) Word has length 161 [2021-11-12 22:40:44,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:40:44,225 INFO L225 Difference]: With dead ends: 274 [2021-11-12 22:40:44,227 INFO L226 Difference]: Without dead ends: 162 [2021-11-12 22:40:44,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:40:44,230 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 169 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 604.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.58ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 680.12ms IncrementalHoareTripleChecker+Time [2021-11-12 22:40:44,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 1343 Invalid, 164 Unknown, 0 Unchecked, 6.58ms Time], IncrementalHoareTripleChecker [15 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 680.12ms Time] [2021-11-12 22:40:44,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-12 22:40:44,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-11-12 22:40:44,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 108 states have (on average 1.212962962962963) internal successors, (131), 111 states have internal predecessors, (131), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2021-11-12 22:40:44,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 201 transitions. [2021-11-12 22:40:44,247 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 201 transitions. Word has length 161 [2021-11-12 22:40:44,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:40:44,248 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 201 transitions. [2021-11-12 22:40:44,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 11 states have internal predecessors, (110), 7 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 6 states have call predecessors, (32), 7 states have call successors, (32) [2021-11-12 22:40:44,248 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 201 transitions. [2021-11-12 22:40:44,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-12 22:40:44,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:44,254 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:40:44,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:40:44,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:40:44,471 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:40:44,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:44,472 INFO L85 PathProgramCache]: Analyzing trace with hash 996052163, now seen corresponding path program 1 times [2021-11-12 22:40:44,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:40:44,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562345979] [2021-11-12 22:40:44,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:40:44,475 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:40:44,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:40:44,476 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:40:44,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:40:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:40:48,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 1942 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:40:49,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:40:50,257 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-12 22:40:50,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:40:51,137 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-12 22:40:51,137 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:40:51,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562345979] [2021-11-12 22:40:51,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1562345979] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:40:51,138 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:40:51,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-12 22:40:51,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403833504] [2021-11-12 22:40:51,138 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:40:51,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:40:51,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:40:51,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:40:51,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:40:51,140 INFO L87 Difference]: Start difference. First operand 162 states and 201 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-12 22:40:53,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:40:55,368 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:40:57,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:40:57,101 INFO L93 Difference]: Finished difference Result 287 states and 357 transitions. [2021-11-12 22:40:57,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 22:40:57,106 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 176 [2021-11-12 22:40:57,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:40:57,108 INFO L225 Difference]: With dead ends: 287 [2021-11-12 22:40:57,108 INFO L226 Difference]: Without dead ends: 181 [2021-11-12 22:40:57,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-11-12 22:40:57,110 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 52 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5154.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.27ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5353.99ms IncrementalHoareTripleChecker+Time [2021-11-12 22:40:57,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 748 Invalid, 99 Unknown, 0 Unchecked, 4.27ms Time], IncrementalHoareTripleChecker [12 Valid, 85 Invalid, 2 Unknown, 0 Unchecked, 5353.99ms Time] [2021-11-12 22:40:57,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-12 22:40:57,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 164. [2021-11-12 22:40:57,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 110 states have (on average 1.209090909090909) internal successors, (133), 113 states have internal predecessors, (133), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2021-11-12 22:40:57,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 203 transitions. [2021-11-12 22:40:57,135 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 203 transitions. Word has length 176 [2021-11-12 22:40:57,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:40:57,137 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 203 transitions. [2021-11-12 22:40:57,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-12 22:40:57,138 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 203 transitions. [2021-11-12 22:40:57,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-12 22:40:57,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:57,143 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:40:57,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:40:57,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:40:57,368 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:40:57,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:57,369 INFO L85 PathProgramCache]: Analyzing trace with hash 28701509, now seen corresponding path program 1 times [2021-11-12 22:40:57,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:40:57,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314814402] [2021-11-12 22:40:57,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:40:57,374 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:40:57,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:40:57,375 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:40:57,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:41:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:02,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 1940 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:41:02,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:03,161 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-12 22:41:03,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:04,051 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-12 22:41:04,051 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:04,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314814402] [2021-11-12 22:41:04,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314814402] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:04,052 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:04,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-11-12 22:41:04,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427644004] [2021-11-12 22:41:04,052 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:04,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 22:41:04,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:04,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 22:41:04,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:41:04,054 INFO L87 Difference]: Start difference. First operand 164 states and 203 transitions. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-12 22:41:06,251 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:41:08,269 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:41:10,281 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:41:12,289 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:41:14,303 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:41:17,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:17,170 INFO L93 Difference]: Finished difference Result 286 states and 354 transitions. [2021-11-12 22:41:17,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 22:41:17,173 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 176 [2021-11-12 22:41:17,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:17,175 INFO L225 Difference]: With dead ends: 286 [2021-11-12 22:41:17,175 INFO L226 Difference]: Without dead ends: 182 [2021-11-12 22:41:17,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:41:17,177 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 21 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 9 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12005.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.79ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12322.77ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:17,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 1421 Invalid, 189 Unknown, 0 Unchecked, 7.79ms Time], IncrementalHoareTripleChecker [9 Valid, 175 Invalid, 5 Unknown, 0 Unchecked, 12322.77ms Time] [2021-11-12 22:41:17,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-12 22:41:17,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 166. [2021-11-12 22:41:17,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 112 states have (on average 1.2053571428571428) internal successors, (135), 115 states have internal predecessors, (135), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2021-11-12 22:41:17,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 205 transitions. [2021-11-12 22:41:17,196 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 205 transitions. Word has length 176 [2021-11-12 22:41:17,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:17,197 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 205 transitions. [2021-11-12 22:41:17,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-12 22:41:17,198 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 205 transitions. [2021-11-12 22:41:17,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-12 22:41:17,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:17,207 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:17,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:17,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:17,421 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:17,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:17,421 INFO L85 PathProgramCache]: Analyzing trace with hash -463924665, now seen corresponding path program 1 times [2021-11-12 22:41:17,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:17,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900923264] [2021-11-12 22:41:17,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:17,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:17,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:17,425 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:17,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:41:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:21,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 1937 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:41:21,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:22,265 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-12 22:41:22,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:22,799 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-11-12 22:41:22,800 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:22,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900923264] [2021-11-12 22:41:22,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900923264] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:41:22,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:41:22,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-12 22:41:22,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653445630] [2021-11-12 22:41:22,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:22,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:41:22,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:22,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:41:22,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:41:22,801 INFO L87 Difference]: Start difference. First operand 166 states and 205 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 22:41:22,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:22,939 INFO L93 Difference]: Finished difference Result 275 states and 348 transitions. [2021-11-12 22:41:22,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:41:22,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 176 [2021-11-12 22:41:22,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:22,941 INFO L225 Difference]: With dead ends: 275 [2021-11-12 22:41:22,941 INFO L226 Difference]: Without dead ends: 171 [2021-11-12 22:41:22,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:41:22,942 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 7 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.67ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 105.58ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:22,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 562 Invalid, 38 Unknown, 0 Unchecked, 1.67ms Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 105.58ms Time] [2021-11-12 22:41:22,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-11-12 22:41:22,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2021-11-12 22:41:22,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 113 states have (on average 1.2035398230088497) internal successors, (136), 116 states have internal predecessors, (136), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2021-11-12 22:41:22,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 206 transitions. [2021-11-12 22:41:22,954 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 206 transitions. Word has length 176 [2021-11-12 22:41:22,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:22,955 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 206 transitions. [2021-11-12 22:41:22,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 22:41:22,955 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 206 transitions. [2021-11-12 22:41:22,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-12 22:41:22,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:22,958 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:23,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:23,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:23,173 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:23,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:23,173 INFO L85 PathProgramCache]: Analyzing trace with hash 316081580, now seen corresponding path program 1 times [2021-11-12 22:41:23,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:23,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104731304] [2021-11-12 22:41:23,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:23,176 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:23,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:23,177 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:23,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:41:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:27,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 1943 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:41:27,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:27,899 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-12 22:41:27,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:28,432 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-12 22:41:28,432 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:28,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104731304] [2021-11-12 22:41:28,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104731304] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:41:28,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:41:28,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 22:41:28,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581921647] [2021-11-12 22:41:28,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:28,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:41:28,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:28,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:41:28,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:41:28,436 INFO L87 Difference]: Start difference. First operand 167 states and 206 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 22:41:28,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:28,500 INFO L93 Difference]: Finished difference Result 269 states and 338 transitions. [2021-11-12 22:41:28,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:41:28,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 176 [2021-11-12 22:41:28,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:28,512 INFO L225 Difference]: With dead ends: 269 [2021-11-12 22:41:28,512 INFO L226 Difference]: Without dead ends: 175 [2021-11-12 22:41:28,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:41:28,514 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 4 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.89ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.17ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:28,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 793 Invalid, 16 Unknown, 0 Unchecked, 1.89ms Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 30.17ms Time] [2021-11-12 22:41:28,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-12 22:41:28,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2021-11-12 22:41:28,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 116 states have (on average 1.1982758620689655) internal successors, (139), 119 states have internal predecessors, (139), 35 states have call successors, (35), 17 states have call predecessors, (35), 19 states have return successors, (40), 35 states have call predecessors, (40), 34 states have call successors, (40) [2021-11-12 22:41:28,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 214 transitions. [2021-11-12 22:41:28,533 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 214 transitions. Word has length 176 [2021-11-12 22:41:28,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:28,536 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 214 transitions. [2021-11-12 22:41:28,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 22:41:28,536 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 214 transitions. [2021-11-12 22:41:28,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-12 22:41:28,540 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:28,540 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:28,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-12 22:41:28,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:28,765 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:28,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:28,765 INFO L85 PathProgramCache]: Analyzing trace with hash -518570188, now seen corresponding path program 1 times [2021-11-12 22:41:28,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:28,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009955304] [2021-11-12 22:41:28,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:28,768 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:28,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:28,769 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:28,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:41:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:33,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 1945 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:41:33,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:33,604 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-12 22:41:33,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:34,258 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-11-12 22:41:34,258 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:34,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009955304] [2021-11-12 22:41:34,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009955304] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:41:34,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [345753865] [2021-11-12 22:41:34,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:34,258 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:41:34,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:41:34,260 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:41:34,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-12 22:41:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:35,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 1945 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:41:35,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:36,053 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-12 22:41:36,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:36,430 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-12 22:41:36,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [345753865] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:41:36,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:41:36,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 4] total 10 [2021-11-12 22:41:36,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723026858] [2021-11-12 22:41:36,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:36,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:41:36,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:36,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:41:36,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:41:36,432 INFO L87 Difference]: Start difference. First operand 171 states and 214 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 22:41:36,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:36,465 INFO L93 Difference]: Finished difference Result 194 states and 242 transitions. [2021-11-12 22:41:36,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:41:36,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 179 [2021-11-12 22:41:36,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:36,468 INFO L225 Difference]: With dead ends: 194 [2021-11-12 22:41:36,468 INFO L226 Difference]: Without dead ends: 172 [2021-11-12 22:41:36,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 704 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:41:36,470 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 0 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.44ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.60ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:36,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 590 Invalid, 6 Unknown, 0 Unchecked, 1.44ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 24.60ms Time] [2021-11-12 22:41:36,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-12 22:41:36,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-11-12 22:41:36,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 117 states have (on average 1.1965811965811965) internal successors, (140), 119 states have internal predecessors, (140), 35 states have call successors, (35), 17 states have call predecessors, (35), 19 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2021-11-12 22:41:36,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 215 transitions. [2021-11-12 22:41:36,481 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 215 transitions. Word has length 179 [2021-11-12 22:41:36,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:36,482 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 215 transitions. [2021-11-12 22:41:36,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 22:41:36,482 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 215 transitions. [2021-11-12 22:41:36,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-12 22:41:36,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:36,484 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:36,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:36,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:36,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:36,892 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:36,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:36,892 INFO L85 PathProgramCache]: Analyzing trace with hash -8675364, now seen corresponding path program 2 times [2021-11-12 22:41:36,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:36,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798509333] [2021-11-12 22:41:36,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:41:36,895 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:36,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:36,896 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:36,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db127f8-ac4e-4f9d-b40b-2c2e6b21afa5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process