./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d58b6cbe3dbcae2c6bf4b35286cc82fa39ed49d435b7e41930b97647d699f843 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:43:59,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:43:59,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:43:59,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:43:59,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:43:59,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:43:59,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:43:59,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:43:59,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:43:59,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:43:59,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:43:59,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:43:59,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:43:59,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:43:59,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:43:59,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:43:59,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:43:59,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:43:59,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:43:59,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:43:59,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:43:59,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:43:59,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:43:59,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:43:59,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:43:59,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:43:59,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:43:59,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:43:59,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:43:59,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:43:59,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:43:59,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:43:59,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:43:59,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:43:59,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:43:59,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:43:59,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:43:59,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:43:59,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:43:59,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:43:59,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:43:59,515 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 08:43:59,541 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:43:59,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:43:59,542 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:43:59,543 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:43:59,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:43:59,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:43:59,545 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:43:59,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:43:59,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:43:59,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:43:59,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:43:59,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:43:59,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:43:59,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:43:59,547 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:43:59,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:43:59,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:43:59,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:43:59,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:43:59,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:43:59,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:43:59,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:43:59,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:43:59,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:43:59,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:43:59,549 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:43:59,550 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:43:59,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:43:59,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:43:59,550 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d58b6cbe3dbcae2c6bf4b35286cc82fa39ed49d435b7e41930b97647d699f843 [2021-11-07 08:43:59,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:43:59,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:43:59,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:43:59,917 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:43:59,919 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:43:59,920 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i [2021-11-07 08:44:00,038 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/data/e924c1bb9/766129af1e774686bfcae301e0c472a1/FLAG1a8ad0e93 [2021-11-07 08:44:01,041 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:44:01,042 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i [2021-11-07 08:44:01,097 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/data/e924c1bb9/766129af1e774686bfcae301e0c472a1/FLAG1a8ad0e93 [2021-11-07 08:44:01,460 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/data/e924c1bb9/766129af1e774686bfcae301e0c472a1 [2021-11-07 08:44:01,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:44:01,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:44:01,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:44:01,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:44:01,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:44:01,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:44:01" (1/1) ... [2021-11-07 08:44:01,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57edff80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:01, skipping insertion in model container [2021-11-07 08:44:01,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:44:01" (1/1) ... [2021-11-07 08:44:01,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:44:01,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:44:01,893 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_216fa58a-cdb3-4457-adaf-0cfae34e21f6/sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i[4497,4510] [2021-11-07 08:44:01,901 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_216fa58a-cdb3-4457-adaf-0cfae34e21f6/sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i[4557,4570] [2021-11-07 08:44:01,926 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 08:44:01,933 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 08:44:02,948 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 08:44:03,025 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,026 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,027 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,028 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,029 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,053 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,054 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,061 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,062 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,065 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,067 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,071 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,075 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,495 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 08:44:03,497 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 08:44:03,498 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 08:44:03,500 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 08:44:03,502 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 08:44:03,503 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 08:44:03,504 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 08:44:03,505 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 08:44:03,506 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 08:44:03,507 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 08:44:03,725 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,740 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:44:03,832 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:44:03,846 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_216fa58a-cdb3-4457-adaf-0cfae34e21f6/sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i[4497,4510] [2021-11-07 08:44:03,846 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_216fa58a-cdb3-4457-adaf-0cfae34e21f6/sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i[4557,4570] [2021-11-07 08:44:03,849 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 08:44:03,850 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 08:44:03,886 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 08:44:03,908 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,908 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,909 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,909 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,910 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,918 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,919 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,920 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,921 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,922 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,930 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,931 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:03,931 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:04,023 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 08:44:04,024 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 08:44:04,025 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 08:44:04,025 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 08:44:04,027 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 08:44:04,028 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 08:44:04,028 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 08:44:04,029 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 08:44:04,030 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 08:44:04,030 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 08:44:04,093 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:04,107 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:44:04,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:44:04,483 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:44:04,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:04 WrapperNode [2021-11-07 08:44:04,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:44:04,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:44:04,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:44:04,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:44:04,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:04" (1/1) ... [2021-11-07 08:44:04,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:04" (1/1) ... [2021-11-07 08:44:04,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:44:04,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:44:04,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:44:04,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:44:04,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:04" (1/1) ... [2021-11-07 08:44:04,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:04" (1/1) ... [2021-11-07 08:44:04,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:04" (1/1) ... [2021-11-07 08:44:04,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:04" (1/1) ... [2021-11-07 08:44:04,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:04" (1/1) ... [2021-11-07 08:44:04,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:04" (1/1) ... [2021-11-07 08:44:04,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:04" (1/1) ... [2021-11-07 08:44:04,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:44:04,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:44:04,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:44:04,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:44:04,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:04" (1/1) ... [2021-11-07 08:44:04,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:44:04,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:44:04,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:44:05,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:44:05,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:44:05,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:44:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:44:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 08:44:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:44:05,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:44:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:44:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-07 08:44:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 08:44:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 08:44:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:44:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:44:15,904 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:44:15,904 INFO L299 CfgBuilder]: Removed 110 assume(true) statements. [2021-11-07 08:44:15,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:44:15 BoogieIcfgContainer [2021-11-07 08:44:15,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:44:15,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:44:15,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:44:15,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:44:15,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:44:01" (1/3) ... [2021-11-07 08:44:15,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2834107a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:44:15, skipping insertion in model container [2021-11-07 08:44:15,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:04" (2/3) ... [2021-11-07 08:44:15,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2834107a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:44:15, skipping insertion in model container [2021-11-07 08:44:15,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:44:15" (3/3) ... [2021-11-07 08:44:15,919 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_capacity_harness.i [2021-11-07 08:44:15,926 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:44:15,926 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-07 08:44:15,983 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:44:15,989 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=PETRI_NET, 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 [2021-11-07 08:44:15,990 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-07 08:44:16,006 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 123 states have (on average 1.4308943089430894) internal successors, (176), 132 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:16,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 08:44:16,013 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:44:16,014 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:44:16,014 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 08:44:16,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:44:16,031 INFO L85 PathProgramCache]: Analyzing trace with hash -608975248, now seen corresponding path program 1 times [2021-11-07 08:44:16,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:44:16,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636817531] [2021-11-07 08:44:16,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:44:16,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:44:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:44:16,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:44:16,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:44:16,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636817531] [2021-11-07 08:44:16,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636817531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:44:16,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:44:16,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:44:16,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85759668] [2021-11-07 08:44:16,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:44:16,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:44:16,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:44:16,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:44:16,851 INFO L87 Difference]: Start difference. First operand has 133 states, 123 states have (on average 1.4308943089430894) internal successors, (176), 132 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:16,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:44:16,881 INFO L93 Difference]: Finished difference Result 262 states and 347 transitions. [2021-11-07 08:44:16,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:44:16,883 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-07 08:44:16,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:44:16,893 INFO L225 Difference]: With dead ends: 262 [2021-11-07 08:44:16,894 INFO L226 Difference]: Without dead ends: 128 [2021-11-07 08:44:16,897 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:44:16,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-07 08:44:16,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-11-07 08:44:16,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 119 states have (on average 1.2941176470588236) internal successors, (154), 127 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:16,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 154 transitions. [2021-11-07 08:44:16,939 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 154 transitions. Word has length 29 [2021-11-07 08:44:16,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:44:16,940 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 154 transitions. [2021-11-07 08:44:16,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:16,940 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 154 transitions. [2021-11-07 08:44:16,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 08:44:16,942 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:44:16,943 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:44:16,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:44:16,943 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 08:44:16,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:44:16,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1598932068, now seen corresponding path program 1 times [2021-11-07 08:44:16,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:44:16,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409006862] [2021-11-07 08:44:16,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:44:16,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:44:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:44:17,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:44:17,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:44:17,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409006862] [2021-11-07 08:44:17,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409006862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:44:17,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:44:17,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:44:17,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212619180] [2021-11-07 08:44:17,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:44:17,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:44:17,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:44:17,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:44:17,298 INFO L87 Difference]: Start difference. First operand 128 states and 154 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:17,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:44:17,352 INFO L93 Difference]: Finished difference Result 243 states and 293 transitions. [2021-11-07 08:44:17,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:44:17,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-07 08:44:17,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:44:17,357 INFO L225 Difference]: With dead ends: 243 [2021-11-07 08:44:17,360 INFO L226 Difference]: Without dead ends: 129 [2021-11-07 08:44:17,361 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:44:17,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-07 08:44:17,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-11-07 08:44:17,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 120 states have (on average 1.2916666666666667) internal successors, (155), 128 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:17,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 155 transitions. [2021-11-07 08:44:17,385 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 155 transitions. Word has length 29 [2021-11-07 08:44:17,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:44:17,386 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 155 transitions. [2021-11-07 08:44:17,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:17,386 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 155 transitions. [2021-11-07 08:44:17,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 08:44:17,388 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:44:17,388 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:44:17,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:44:17,389 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 08:44:17,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:44:17,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1732945574, now seen corresponding path program 1 times [2021-11-07 08:44:17,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:44:17,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097398115] [2021-11-07 08:44:17,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:44:17,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:44:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:44:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:44:17,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:44:17,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097398115] [2021-11-07 08:44:17,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097398115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:44:17,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:44:17,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:44:17,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799998264] [2021-11-07 08:44:17,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:44:17,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:44:17,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:44:17,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:44:17,789 INFO L87 Difference]: Start difference. First operand 129 states and 155 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:18,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:44:18,029 INFO L93 Difference]: Finished difference Result 226 states and 270 transitions. [2021-11-07 08:44:18,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:44:18,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-07 08:44:18,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:44:18,034 INFO L225 Difference]: With dead ends: 226 [2021-11-07 08:44:18,034 INFO L226 Difference]: Without dead ends: 129 [2021-11-07 08:44:18,035 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:44:18,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-07 08:44:18,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-11-07 08:44:18,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 120 states have (on average 1.275) internal successors, (153), 128 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:18,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 153 transitions. [2021-11-07 08:44:18,056 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 153 transitions. Word has length 29 [2021-11-07 08:44:18,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:44:18,057 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 153 transitions. [2021-11-07 08:44:18,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:18,057 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 153 transitions. [2021-11-07 08:44:18,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 08:44:18,059 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:44:18,060 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:44:18,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:44:18,060 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 08:44:18,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:44:18,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1562874250, now seen corresponding path program 1 times [2021-11-07 08:44:18,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:44:18,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891894802] [2021-11-07 08:44:18,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:44:18,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:44:18,193 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:44:18,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1612639358] [2021-11-07 08:44:18,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:44:18,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:44:18,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:44:18,198 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:44:18,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 08:44:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:44:19,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 2408 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 08:44:19,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:44:19,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:44:19,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:44:19,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891894802] [2021-11-07 08:44:19,976 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:44:19,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612639358] [2021-11-07 08:44:19,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612639358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:44:19,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:44:19,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:44:19,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419975091] [2021-11-07 08:44:19,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:44:19,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:44:19,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:44:19,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:44:19,980 INFO L87 Difference]: Start difference. First operand 129 states and 153 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:20,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:44:20,338 INFO L93 Difference]: Finished difference Result 201 states and 236 transitions. [2021-11-07 08:44:20,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:44:20,339 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-07 08:44:20,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:44:20,341 INFO L225 Difference]: With dead ends: 201 [2021-11-07 08:44:20,341 INFO L226 Difference]: Without dead ends: 129 [2021-11-07 08:44:20,342 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:44:20,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-07 08:44:20,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-11-07 08:44:20,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 120 states have (on average 1.2583333333333333) internal successors, (151), 128 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:20,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 151 transitions. [2021-11-07 08:44:20,367 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 151 transitions. Word has length 37 [2021-11-07 08:44:20,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:44:20,374 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 151 transitions. [2021-11-07 08:44:20,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:20,374 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 151 transitions. [2021-11-07 08:44:20,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 08:44:20,380 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:44:20,380 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:44:20,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:44:20,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:44:20,607 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 08:44:20,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:44:20,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1678171348, now seen corresponding path program 1 times [2021-11-07 08:44:20,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:44:20,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759265537] [2021-11-07 08:44:20,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:44:20,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:44:20,740 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:44:20,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186170093] [2021-11-07 08:44:20,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:44:20,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:44:20,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:44:20,742 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:44:20,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 08:44:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:44:21,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 2593 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:44:21,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:44:22,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:44:22,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:44:22,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759265537] [2021-11-07 08:44:22,258 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:44:22,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186170093] [2021-11-07 08:44:22,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186170093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:44:22,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:44:22,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:44:22,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235567810] [2021-11-07 08:44:22,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:44:22,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:44:22,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:44:22,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:44:22,261 INFO L87 Difference]: Start difference. First operand 129 states and 151 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:22,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:44:22,534 INFO L93 Difference]: Finished difference Result 247 states and 292 transitions. [2021-11-07 08:44:22,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:44:22,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-07 08:44:22,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:44:22,540 INFO L225 Difference]: With dead ends: 247 [2021-11-07 08:44:22,540 INFO L226 Difference]: Without dead ends: 149 [2021-11-07 08:44:22,541 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:44:22,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-07 08:44:22,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 137. [2021-11-07 08:44:22,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 128 states have (on average 1.2421875) internal successors, (159), 136 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:22,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2021-11-07 08:44:22,555 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 53 [2021-11-07 08:44:22,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:44:22,556 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2021-11-07 08:44:22,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:44:22,556 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2021-11-07 08:44:22,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 08:44:22,558 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:44:22,558 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:44:22,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 08:44:22,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:44:22,779 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 08:44:22,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:44:22,779 INFO L85 PathProgramCache]: Analyzing trace with hash -96836014, now seen corresponding path program 1 times [2021-11-07 08:44:22,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:44:22,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616706822] [2021-11-07 08:44:22,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:44:22,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:44:22,930 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:44:22,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340394923] [2021-11-07 08:44:22,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:44:22,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:44:22,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:44:22,932 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:44:22,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 08:49:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:49:30,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 2598 conjuncts, 215 conjunts are in the unsatisfiable core [2021-11-07 08:49:30,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:49:30,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 08:49:30,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-07 08:49:30,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-07 08:49:30,921 INFO L354 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2021-11-07 08:49:30,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 33 [2021-11-07 08:49:31,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 08:49:32,365 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-11-07 08:49:32,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 33 [2021-11-07 08:49:33,139 INFO L354 Elim1Store]: treesize reduction 126, result has 27.2 percent of original size [2021-11-07 08:49:33,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 38 treesize of output 72 [2021-11-07 08:49:43,445 INFO L354 Elim1Store]: treesize reduction 312, result has 14.0 percent of original size [2021-11-07 08:49:43,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 83 treesize of output 115 [2021-11-07 08:49:44,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:49:44,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:49:44,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 08:49:44,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2021-11-07 08:50:01,097 INFO L354 Elim1Store]: treesize reduction 132, result has 15.9 percent of original size [2021-11-07 08:50:01,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 170 treesize of output 183 [2021-11-07 08:50:06,861 INFO L354 Elim1Store]: treesize reduction 84, result has 30.6 percent of original size [2021-11-07 08:50:06,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 105 [2021-11-07 08:50:07,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:50:07,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:50:07,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:50:07,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:50:07,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:50:07,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:50:07,649 INFO L354 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2021-11-07 08:50:07,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 91 treesize of output 71 [2021-11-07 08:50:11,818 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 08:50:11,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 136 treesize of output 80 [2021-11-07 08:50:12,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:50:12,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:50:12,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616706822] [2021-11-07 08:50:12,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:50:12,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340394923] [2021-11-07 08:50:12,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340394923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:50:12,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:50:12,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-11-07 08:50:12,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536838769] [2021-11-07 08:50:12,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-07 08:50:12,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:50:12,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-07 08:50:12,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2021-11-07 08:50:12,491 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 30 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:50,816 WARN L207 SmtUtils]: Spent 6.16 s on a formula simplification. DAG size of input: 140 DAG size of output: 111 [2021-11-07 08:50:57,641 WARN L207 SmtUtils]: Spent 5.40 s on a formula simplification. DAG size of input: 134 DAG size of output: 105 [2021-11-07 08:51:06,429 WARN L207 SmtUtils]: Spent 7.77 s on a formula simplification. DAG size of input: 126 DAG size of output: 97 [2021-11-07 08:51:13,664 WARN L207 SmtUtils]: Spent 6.20 s on a formula simplification. DAG size of input: 135 DAG size of output: 106 [2021-11-07 08:51:21,519 WARN L207 SmtUtils]: Spent 6.49 s on a formula simplification. DAG size of input: 120 DAG size of output: 91 [2021-11-07 08:51:30,833 WARN L207 SmtUtils]: Spent 5.97 s on a formula simplification. DAG size of input: 121 DAG size of output: 92 [2021-11-07 08:52:06,715 WARN L207 SmtUtils]: Spent 7.79 s on a formula simplification. DAG size of input: 141 DAG size of output: 110 [2021-11-07 08:52:19,657 WARN L207 SmtUtils]: Spent 7.48 s on a formula simplification. DAG size of input: 162 DAG size of output: 112 [2021-11-07 08:52:27,050 WARN L207 SmtUtils]: Spent 6.17 s on a formula simplification. DAG size of input: 142 DAG size of output: 111 [2021-11-07 08:52:32,788 WARN L207 SmtUtils]: Spent 5.43 s on a formula simplification. DAG size of input: 156 DAG size of output: 111 [2021-11-07 08:52:40,407 WARN L207 SmtUtils]: Spent 6.36 s on a formula simplification. DAG size of input: 103 DAG size of output: 95 [2021-11-07 08:53:05,503 WARN L207 SmtUtils]: Spent 7.07 s on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2021-11-07 08:53:18,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:53:18,974 INFO L93 Difference]: Finished difference Result 640 states and 745 transitions. [2021-11-07 08:53:18,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-11-07 08:53:18,975 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 30 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-07 08:53:18,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:53:18,979 INFO L225 Difference]: With dead ends: 640 [2021-11-07 08:53:18,980 INFO L226 Difference]: Without dead ends: 577 [2021-11-07 08:53:18,986 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5059 ImplicationChecksByTransitivity, 144.1s TimeCoverageRelationStatistics Valid=1616, Invalid=13636, Unknown=0, NotChecked=0, Total=15252 [2021-11-07 08:53:18,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-11-07 08:53:19,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 204. [2021-11-07 08:53:19,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 195 states have (on average 1.241025641025641) internal successors, (242), 203 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:19,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 242 transitions. [2021-11-07 08:53:19,017 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 242 transitions. Word has length 53 [2021-11-07 08:53:19,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:53:19,017 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 242 transitions. [2021-11-07 08:53:19,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 30 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:19,018 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 242 transitions. [2021-11-07 08:53:19,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 08:53:19,019 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:53:19,020 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:53:19,230 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forcibly destroying the process [2021-11-07 08:53:19,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 08:53:19,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-07 08:53:19,232 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 08:53:19,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:53:19,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1466688522, now seen corresponding path program 1 times [2021-11-07 08:53:19,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:53:19,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196650216] [2021-11-07 08:53:19,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:53:19,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:53:19,341 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:53:19,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1954483526] [2021-11-07 08:53:19,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:53:19,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:53:19,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:53:19,343 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:53:19,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216fa58a-cdb3-4457-adaf-0cfae34e21f6/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process