./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 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/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_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:19:11,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:19:11,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:19:11,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:19:11,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:19:11,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:19:11,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:19:11,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:19:11,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:19:11,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:19:11,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:19:11,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:19:11,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:19:11,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:19:11,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:19:11,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:19:11,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:19:11,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:19:11,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:19:11,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:19:11,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:19:11,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:19:11,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:19:11,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:19:11,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:19:11,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:19:11,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:19:11,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:19:11,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:19:11,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:19:11,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:19:11,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:19:11,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:19:11,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:19:11,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:19:11,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:19:11,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:19:11,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:19:11,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:19:11,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:19:11,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:19:11,500 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-25 18:19:11,560 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:19:11,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:19:11,561 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:19:11,561 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:19:11,563 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:19:11,563 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:19:11,564 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:19:11,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:19:11,565 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:19:11,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:19:11,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:19:11,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:19:11,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:19:11,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:19:11,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:19:11,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:19:11,569 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:19:11,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:19:11,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:19:11,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:19:11,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:19:11,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:19:11,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:19:11,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:19:11,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:19:11,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:19:11,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:19:11,573 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:19:11,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:19:11,574 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:19:11,574 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:19:11,574 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d58b6cbe3dbcae2c6bf4b35286cc82fa39ed49d435b7e41930b97647d699f843 [2022-11-25 18:19:11,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:19:11,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:19:11,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:19:11,965 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:19:11,966 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:19:11,969 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i [2022-11-25 18:19:15,163 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:19:15,838 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:19:15,841 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i [2022-11-25 18:19:15,886 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/data/0360e2959/28949d31402244fa9205655b0b23c08f/FLAGc6dbaeb53 [2022-11-25 18:19:15,905 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/data/0360e2959/28949d31402244fa9205655b0b23c08f [2022-11-25 18:19:15,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:19:15,912 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:19:15,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:19:15,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:19:15,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:19:15,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:19:15" (1/1) ... [2022-11-25 18:19:15,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c742f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:15, skipping insertion in model container [2022-11-25 18:19:15,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:19:15" (1/1) ... [2022-11-25 18:19:15,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:19:16,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:19:16,329 WARN L237 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_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i[4497,4510] [2022-11-25 18:19:16,338 WARN L237 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_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i[4557,4570] [2022-11-25 18:19:17,393 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 18:19:17,480 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:17,481 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:17,481 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:17,482 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:17,484 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:17,499 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:17,500 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:17,503 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:17,504 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:17,506 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:17,507 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:17,508 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:17,509 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:17,610 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 18:19:17,610 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 18:19:17,612 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 18:19:17,620 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 18:19:17,622 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 18:19:17,623 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 18:19:18,086 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 18:19:18,089 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 18:19:18,093 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 18:19:18,094 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 18:19:18,100 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 18:19:18,106 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 18:19:18,110 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 18:19:18,112 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 18:19:18,113 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 18:19:18,114 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 18:19:18,114 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 18:19:18,352 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:18,361 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:18,428 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 18:19:18,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:19:18,497 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:19:18,515 WARN L237 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_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i[4497,4510] [2022-11-25 18:19:18,516 WARN L237 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_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i[4557,4570] [2022-11-25 18:19:18,561 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 18:19:18,582 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:18,583 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:18,584 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:18,584 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:18,586 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:18,595 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:18,596 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:18,597 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:18,598 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:18,600 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:18,601 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:18,602 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:18,602 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:18,654 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 18:19:18,655 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 18:19:18,656 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 18:19:18,668 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 18:19:18,670 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 18:19:18,673 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 18:19:18,755 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 18:19:18,756 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 18:19:18,757 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 18:19:18,758 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 18:19:18,759 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 18:19:18,760 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 18:19:18,761 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 18:19:18,762 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 18:19:18,763 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 18:19:18,764 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 18:19:18,764 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 18:19:18,825 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:18,838 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 18:19:18,899 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 18:19:18,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:19:19,178 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:19:19,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:19 WrapperNode [2022-11-25 18:19:19,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:19:19,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:19:19,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:19:19,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:19:19,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:19" (1/1) ... [2022-11-25 18:19:19,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:19" (1/1) ... [2022-11-25 18:19:19,398 INFO L138 Inliner]: procedures = 690, calls = 1686, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 615 [2022-11-25 18:19:19,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:19:19,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:19:19,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:19:19,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:19:19,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:19" (1/1) ... [2022-11-25 18:19:19,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:19" (1/1) ... [2022-11-25 18:19:19,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:19" (1/1) ... [2022-11-25 18:19:19,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:19" (1/1) ... [2022-11-25 18:19:19,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:19" (1/1) ... [2022-11-25 18:19:19,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:19" (1/1) ... [2022-11-25 18:19:19,545 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:19" (1/1) ... [2022-11-25 18:19:19,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:19" (1/1) ... [2022-11-25 18:19:19,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:19:19,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:19:19,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:19:19,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:19:19,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:19" (1/1) ... [2022-11-25 18:19:19,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:19:19,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:19:19,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:19:19,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:19:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:19:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-25 18:19:19,666 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-25 18:19:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-25 18:19:19,666 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-25 18:19:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-25 18:19:19,667 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-25 18:19:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:19:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-25 18:19:19,667 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-25 18:19:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 18:19:19,668 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 18:19:19,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 18:19:19,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:19:19,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 18:19:19,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:19:19,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:19:19,669 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-25 18:19:19,669 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-25 18:19:19,669 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-25 18:19:19,669 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-25 18:19:19,670 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-25 18:19:19,670 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-25 18:19:19,670 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 18:19:19,670 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 18:19:19,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:19:19,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 18:19:19,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 18:19:19,671 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-25 18:19:19,671 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-25 18:19:19,671 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-25 18:19:19,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-25 18:19:19,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:19:19,672 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-25 18:19:19,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-25 18:19:19,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:19:20,068 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:19:20,072 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:19:21,146 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:19:21,158 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:19:21,158 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 18:19:21,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:19:21 BoogieIcfgContainer [2022-11-25 18:19:21,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:19:21,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:19:21,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:19:21,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:19:21,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:19:15" (1/3) ... [2022-11-25 18:19:21,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7105b8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:19:21, skipping insertion in model container [2022-11-25 18:19:21,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:19" (2/3) ... [2022-11-25 18:19:21,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7105b8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:19:21, skipping insertion in model container [2022-11-25 18:19:21,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:19:21" (3/3) ... [2022-11-25 18:19:21,183 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_capacity_harness.i [2022-11-25 18:19:21,207 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:19:21,207 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:19:21,295 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:19:21,309 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@72fd4b0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:19:21,310 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:19:21,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 77 states have (on average 1.1948051948051948) internal successors, (92), 78 states have internal predecessors, (92), 31 states have call successors, (31), 12 states have call predecessors, (31), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-25 18:19:21,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-25 18:19:21,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:19:21,345 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:19:21,346 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:19:21,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:19:21,356 INFO L85 PathProgramCache]: Analyzing trace with hash -817942521, now seen corresponding path program 1 times [2022-11-25 18:19:21,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:19:21,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325374566] [2022-11-25 18:19:21,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:19:21,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:19:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:22,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:19:22,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325374566] [2022-11-25 18:19:22,004 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 18:19:22,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497315563] [2022-11-25 18:19:22,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:19:22,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:19:22,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:19:22,011 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:19:22,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:19:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:22,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 2052 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 18:19:22,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:19:22,773 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-25 18:19:22,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:19:22,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497315563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:19:22,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:19:22,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:19:22,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608178378] [2022-11-25 18:19:22,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:19:22,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:19:22,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:19:22,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:19:22,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:19:22,844 INFO L87 Difference]: Start difference. First operand has 122 states, 77 states have (on average 1.1948051948051948) internal successors, (92), 78 states have internal predecessors, (92), 31 states have call successors, (31), 12 states have call predecessors, (31), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 18:19:22,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:19:22,928 INFO L93 Difference]: Finished difference Result 237 states and 320 transitions. [2022-11-25 18:19:22,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:19:22,931 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 74 [2022-11-25 18:19:22,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:19:22,942 INFO L225 Difference]: With dead ends: 237 [2022-11-25 18:19:22,942 INFO L226 Difference]: Without dead ends: 117 [2022-11-25 18:19:22,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:19:22,950 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:19:22,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:19:22,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-25 18:19:23,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-11-25 18:19:23,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 73 states have (on average 1.178082191780822) internal successors, (86), 74 states have internal predecessors, (86), 31 states have call successors, (31), 12 states have call predecessors, (31), 12 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-11-25 18:19:23,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 147 transitions. [2022-11-25 18:19:23,040 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 147 transitions. Word has length 74 [2022-11-25 18:19:23,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:19:23,040 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 147 transitions. [2022-11-25 18:19:23,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 18:19:23,041 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 147 transitions. [2022-11-25 18:19:23,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-25 18:19:23,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:19:23,045 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:19:23,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:19:23,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 18:19:23,255 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:19:23,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:19:23,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1310312895, now seen corresponding path program 1 times [2022-11-25 18:19:23,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:19:23,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767758387] [2022-11-25 18:19:23,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:19:23,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:19:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:23,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:19:23,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767758387] [2022-11-25 18:19:23,519 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 18:19:23,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144280575] [2022-11-25 18:19:23,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:19:23,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:19:23,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:19:23,522 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:19:23,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:19:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:24,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 2052 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 18:19:24,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:19:24,223 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-25 18:19:24,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:19:24,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144280575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:19:24,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:19:24,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:19:24,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279049840] [2022-11-25 18:19:24,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:19:24,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:19:24,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:19:24,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:19:24,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:19:24,229 INFO L87 Difference]: Start difference. First operand 117 states and 147 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 18:19:24,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:19:24,554 INFO L93 Difference]: Finished difference Result 199 states and 254 transitions. [2022-11-25 18:19:24,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:19:24,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 74 [2022-11-25 18:19:24,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:19:24,559 INFO L225 Difference]: With dead ends: 199 [2022-11-25 18:19:24,559 INFO L226 Difference]: Without dead ends: 119 [2022-11-25 18:19:24,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:19:24,561 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 158 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:19:24,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 401 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 18:19:24,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-25 18:19:24,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-11-25 18:19:24,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 74 states have (on average 1.1756756756756757) internal successors, (87), 76 states have internal predecessors, (87), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (32), 30 states have call predecessors, (32), 30 states have call successors, (32) [2022-11-25 18:19:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 150 transitions. [2022-11-25 18:19:24,592 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 150 transitions. Word has length 74 [2022-11-25 18:19:24,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:19:24,593 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 150 transitions. [2022-11-25 18:19:24,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 18:19:24,593 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 150 transitions. [2022-11-25 18:19:24,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-25 18:19:24,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:19:24,605 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:19:24,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:19:24,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:19:24,816 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:19:24,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:19:24,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1377860737, now seen corresponding path program 1 times [2022-11-25 18:19:24,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:19:24,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155525487] [2022-11-25 18:19:24,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:19:24,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:19:24,904 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:19:24,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1217450087] [2022-11-25 18:19:24,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:19:24,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:19:24,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:19:24,910 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:19:24,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:19:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:25,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 2193 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:19:25,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:19:25,510 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-25 18:19:25,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:19:25,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:19:25,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155525487] [2022-11-25 18:19:25,510 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:19:25,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217450087] [2022-11-25 18:19:25,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217450087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:19:25,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:19:25,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:19:25,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275593647] [2022-11-25 18:19:25,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:19:25,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:19:25,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:19:25,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:19:25,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:19:25,513 INFO L87 Difference]: Start difference. First operand 119 states and 150 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-25 18:19:25,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:19:25,800 INFO L93 Difference]: Finished difference Result 189 states and 236 transitions. [2022-11-25 18:19:25,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:19:25,801 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 89 [2022-11-25 18:19:25,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:19:25,808 INFO L225 Difference]: With dead ends: 189 [2022-11-25 18:19:25,808 INFO L226 Difference]: Without dead ends: 117 [2022-11-25 18:19:25,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:19:25,812 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 170 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:19:25,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 487 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 18:19:25,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-25 18:19:25,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-11-25 18:19:25,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 73 states have (on average 1.1643835616438356) internal successors, (85), 74 states have internal predecessors, (85), 31 states have call successors, (31), 12 states have call predecessors, (31), 12 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-11-25 18:19:25,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 146 transitions. [2022-11-25 18:19:25,838 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 146 transitions. Word has length 89 [2022-11-25 18:19:25,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:19:25,839 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 146 transitions. [2022-11-25 18:19:25,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-25 18:19:25,839 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 146 transitions. [2022-11-25 18:19:25,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-25 18:19:25,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:19:25,843 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:19:25,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:19:26,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:19:26,053 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:19:26,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:19:26,053 INFO L85 PathProgramCache]: Analyzing trace with hash -355007149, now seen corresponding path program 1 times [2022-11-25 18:19:26,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:19:26,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946211579] [2022-11-25 18:19:26,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:19:26,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:19:26,148 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:19:26,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438050544] [2022-11-25 18:19:26,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:19:26,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:19:26,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:19:26,150 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:19:26,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 18:19:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:26,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 2475 conjuncts, 265 conjunts are in the unsatisfiable core [2022-11-25 18:19:26,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:19:27,042 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:19:27,681 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:19:27,686 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:19:28,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 18:19:28,653 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-25 18:19:28,654 INFO L350 Elim1Store]: Elim1 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 6 case distinctions, treesize of input 32 treesize of output 37 [2022-11-25 18:19:29,315 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-25 18:19:29,316 INFO L350 Elim1Store]: Elim1 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 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-25 18:19:50,797 WARN L233 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 55 DAG size of output: 52 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:19:51,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:19:51,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:19:51,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 228 [2022-11-25 18:19:51,290 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 18:19:51,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 112 treesize of output 174 [2022-11-25 18:20:08,062 INFO L321 Elim1Store]: treesize reduction 75, result has 19.4 percent of original size [2022-11-25 18:20:08,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 135 treesize of output 135 [2022-11-25 18:20:08,233 INFO L321 Elim1Store]: treesize reduction 90, result has 16.7 percent of original size [2022-11-25 18:20:08,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 84 treesize of output 92 [2022-11-25 18:20:08,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-25 18:20:08,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-25 18:20:08,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:20:08,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:20:08,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 32 [2022-11-25 18:20:08,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:20:08,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:20:08,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 45 [2022-11-25 18:20:09,531 INFO L321 Elim1Store]: treesize reduction 108, result has 22.3 percent of original size [2022-11-25 18:20:09,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 1418 treesize of output 1327 [2022-11-25 18:20:10,972 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 18:20:10,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-25 18:20:11,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-25 18:20:11,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2022-11-25 18:20:11,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2022-11-25 18:20:11,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2022-11-25 18:20:12,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:20:12,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:20:12,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1027 treesize of output 863 [2022-11-25 18:21:04,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-25 18:21:04,416 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 18:21:04,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 19 [2022-11-25 18:21:04,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-25 18:21:05,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:05,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:05,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 42 [2022-11-25 18:21:05,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 65 [2022-11-25 18:21:05,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:05,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:05,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 51 [2022-11-25 18:21:12,360 INFO L321 Elim1Store]: treesize reduction 108, result has 22.3 percent of original size [2022-11-25 18:21:12,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 740 treesize of output 703 [2022-11-25 18:21:12,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2022-11-25 18:21:12,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2022-11-25 18:21:12,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-25 18:21:12,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-25 18:21:18,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:18,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:18,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 107 [2022-11-25 18:21:18,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:18,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:18,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 113 [2022-11-25 18:21:19,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:19,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:19,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 113 [2022-11-25 18:21:20,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:20,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:20,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 107 [2022-11-25 18:21:20,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:21:20,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 46 [2022-11-25 18:21:21,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:21,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 27 [2022-11-25 18:21:21,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:21:21,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:21:21,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:21:21,340 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:21:21,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 46 [2022-11-25 18:21:21,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:21,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:21,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-25 18:21:23,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:23,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:23,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 82 [2022-11-25 18:21:23,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-25 18:21:23,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:21:23,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 132 [2022-11-25 18:21:23,272 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 18:21:23,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 40 [2022-11-25 18:21:23,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 40 [2022-11-25 18:21:23,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 62 [2022-11-25 18:21:23,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 40 [2022-11-25 18:21:24,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 40 [2022-11-25 18:21:24,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:21:24,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 135 [2022-11-25 18:21:24,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:24,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:24,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 69 [2022-11-25 18:21:24,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 62 [2022-11-25 18:21:24,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:21:24,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 73 [2022-11-25 18:21:24,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:24,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:24,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 51 [2022-11-25 18:21:25,791 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:21:25,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 76 [2022-11-25 18:21:25,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:25,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:25,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 51 [2022-11-25 18:21:27,805 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:21:27,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 78 [2022-11-25 18:21:27,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:27,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:27,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 57 [2022-11-25 18:21:28,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:21:28,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 75 [2022-11-25 18:21:28,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:28,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:28,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 57 [2022-11-25 18:21:48,014 INFO L321 Elim1Store]: treesize reduction 57, result has 24.0 percent of original size [2022-11-25 18:21:48,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 135 treesize of output 135 [2022-11-25 18:21:48,137 INFO L321 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2022-11-25 18:21:48,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 80 [2022-11-25 18:21:48,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-25 18:21:48,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-25 18:21:48,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:48,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:48,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 45 [2022-11-25 18:21:49,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:49,805 INFO L321 Elim1Store]: treesize reduction 92, result has 25.2 percent of original size [2022-11-25 18:21:49,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 434 treesize of output 399 [2022-11-25 18:21:49,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2022-11-25 18:21:49,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2022-11-25 18:21:50,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:50,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:21:50,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 92 [2022-11-25 18:21:51,010 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 18:21:51,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 61 [2022-11-25 18:21:51,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-25 18:22:27,892 WARN L233 SmtUtils]: Spent 28.97s on a formula simplification. DAG size of input: 323 DAG size of output: 96 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:23:02,939 WARN L233 SmtUtils]: Spent 6.87s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:23:09,758 INFO L321 Elim1Store]: treesize reduction 72, result has 28.7 percent of original size [2022-11-25 18:23:09,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 238 treesize of output 364 [2022-11-25 18:23:11,754 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 79 refuted. 5 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:23:11,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:23:33,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:23:33,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946211579] [2022-11-25 18:23:33,216 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:23:33,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438050544] [2022-11-25 18:23:33,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438050544] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:23:33,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:23:33,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2022-11-25 18:23:33,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267633319] [2022-11-25 18:23:33,217 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-25 18:23:33,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-25 18:23:33,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:23:33,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-25 18:23:33,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=3647, Unknown=53, NotChecked=0, Total=3906 [2022-11-25 18:23:33,222 INFO L87 Difference]: Start difference. First operand 117 states and 146 transitions. Second operand has 59 states, 49 states have (on average 1.6122448979591837) internal successors, (79), 44 states have internal predecessors, (79), 16 states have call successors, (18), 11 states have call predecessors, (18), 15 states have return successors, (17), 14 states have call predecessors, (17), 15 states have call successors, (17) [2022-11-25 18:23:35,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:38,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:24:11,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:24:23,993 WARN L233 SmtUtils]: Spent 7.09s on a formula simplification. DAG size of input: 81 DAG size of output: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:24:26,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:24:28,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:25:39,228 WARN L233 SmtUtils]: Spent 1.14m on a formula simplification. DAG size of input: 125 DAG size of output: 97 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:25:41,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:25:55,976 WARN L233 SmtUtils]: Spent 11.85s on a formula simplification. DAG size of input: 106 DAG size of output: 95 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:25:59,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:26:02,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:26:04,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:26:06,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:26:07,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:26:09,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:26:11,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:26:13,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:26:15,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:26:40,022 WARN L233 SmtUtils]: Spent 19.37s on a formula simplification. DAG size of input: 113 DAG size of output: 93 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:26:45,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:27:07,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:27:24,109 WARN L233 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 95 DAG size of output: 88 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:27:26,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:27:52,465 WARN L233 SmtUtils]: Spent 10.75s on a formula simplification. DAG size of input: 96 DAG size of output: 89 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:27:53,452 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse15 (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|)) (.cse17 (+ |c_aws_array_list_is_valid_#in~list.offset| 24))) (let ((.cse8 (= (mod (select .cse15 .cse17) 18446744073709551616) 0))) (let ((.cse0 (= |c_aws_array_list_is_valid_#res| 1)) (.cse1 (not .cse8)) (.cse3 (= |c_aws_array_list_is_valid_#res| 0)) (.cse4 (let ((.cse16 (select |c_old(#memory_int)| |c_aws_array_list_is_valid_#in~list.base|))) (* (select .cse16 .cse17) (select .cse16 (+ |c_aws_array_list_is_valid_#in~list.offset| 16))))) (.cse5 (mod (select .cse15 (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616)) (.cse11 (= c_aws_array_list_is_valid_~current_size_is_valid~0 0)) (.cse10 (let ((.cse14 (select |c_old(#memory_int)| c_aws_array_list_is_valid_~list.base))) (* (select .cse14 (+ 16 c_aws_array_list_is_valid_~list.offset)) (select .cse14 (+ c_aws_array_list_is_valid_~list.offset 24))))) (.cse12 (= c_aws_array_list_is_valid_~current_size_is_valid~0 1)) (.cse9 (mod (select (select |c_#memory_int| c_aws_array_list_is_valid_~list.base) (+ 8 c_aws_array_list_is_valid_~list.offset)) 18446744073709551616))) (and (let ((.cse2 (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (= (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base|) 0 .cse4)) |c_#memory_int|) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0) (<= (mod (select (select |c_#memory_int| |aws_array_list_is_valid_~#required_size~0.base|) 0) 18446744073709551616) .cse5))))) (or (and .cse0 .cse1 .cse2) (and .cse3 (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (= (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base|) 0 .cse4)) |c_#memory_int|) (not (<= (mod (select (select |c_#memory_int| |aws_array_list_is_valid_~#required_size~0.base|) 0) 18446744073709551616) .cse5)) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0)))) (and .cse3 .cse2))) (= |c_#valid| |c_old(#valid)|) (= |c_aws_array_list_is_valid_#in~list.offset| c_aws_array_list_is_valid_~list.offset) (or (and .cse0 .cse1) .cse3) (let ((.cse7 (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (= (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base|) 0 .cse4)) |c_#memory_int|) (<= (mod (select (select |c_#memory_int| |aws_array_list_is_valid_~#required_size~0.base|) 0) 18446744073709551616) .cse5)))) (.cse6 (and (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (= (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base|) 0 .cse4)) |c_#memory_int|) (not (<= (mod (select (select |c_#memory_int| |aws_array_list_is_valid_~#required_size~0.base|) 0) 18446744073709551616) .cse5)))) .cse3))) (or (and (or .cse6 (and .cse7 .cse0)) .cse1) (and (or (and .cse7 .cse3) .cse6) .cse8))) (exists ((|v___CPROVER_overflow_mult_~#c~1.base_12| Int) (v_ArrVal_227 Int)) (and (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_12| v_ArrVal_227)) (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_12|) 0))) (= c_aws_array_list_is_valid_~required_size_is_valid~0 1) (= 0 .cse5) (or (and (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (not (<= (mod (select (select |c_#memory_int| |aws_array_list_is_valid_~#required_size~0.base|) 0) 18446744073709551616) .cse9)) (= (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base|) 0 .cse10)) |c_#memory_int|))) .cse11) (and .cse12 (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (<= (mod (select (select |c_#memory_int| |aws_array_list_is_valid_~#required_size~0.base|) 0) 18446744073709551616) .cse9) (= (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base|) 0 .cse10)) |c_#memory_int|))))) (or (and (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0) (not (<= (mod (select (select |c_#memory_int| |aws_array_list_is_valid_~#required_size~0.base|) 0) 18446744073709551616) .cse9)) (= (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base|) 0 .cse10)) |c_#memory_int|))) .cse11) (and (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (<= (mod (select (select |c_#memory_int| |aws_array_list_is_valid_~#required_size~0.base|) 0) 18446744073709551616) .cse9) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0) (= (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base|) 0 .cse10)) |c_#memory_int|))) .cse12)) (= 0 .cse9) (= |c_aws_array_list_is_valid_#in~list.base| c_aws_array_list_is_valid_~list.base) (exists ((|v_ULTIMATE.start_aws_array_list_capacity_harness_~#list~0#1.base_BEFORE_CALL_15| Int)) (= (select |c_#valid| |v_ULTIMATE.start_aws_array_list_capacity_harness_~#list~0#1.base_BEFORE_CALL_15|) 1)) (exists ((|v___CPROVER_overflow_mult_~#c~1.base_12| Int) (v_ArrVal_229 Int) (v_ArrVal_227 Int) (|v_aws_array_list_is_valid_~#required_size~0.base_7| Int)) (let ((.cse13 (store |c_old(#valid)| |v_aws_array_list_is_valid_~#required_size~0.base_7| 1))) (and (= (select .cse13 |v___CPROVER_overflow_mult_~#c~1.base_12|) 0) (= |c_#valid| (store (store .cse13 |v___CPROVER_overflow_mult_~#c~1.base_12| v_ArrVal_227) |v_aws_array_list_is_valid_~#required_size~0.base_7| v_ArrVal_229)) (= (select |c_old(#valid)| |v_aws_array_list_is_valid_~#required_size~0.base_7|) 0)))))))) is different from true [2022-11-25 18:27:56,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:27:58,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:28:19,093 WARN L233 SmtUtils]: Spent 16.13s on a formula simplification. DAG size of input: 110 DAG size of output: 99 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:28:48,493 WARN L233 SmtUtils]: Spent 28.16s on a formula simplification. DAG size of input: 79 DAG size of output: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:28:55,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:29:33,357 WARN L233 SmtUtils]: Spent 32.64s on a formula simplification. DAG size of input: 117 DAG size of output: 97 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:30:02,853 WARN L233 SmtUtils]: Spent 14.60s on a formula simplification. DAG size of input: 124 DAG size of output: 105 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:30:16,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:30:21,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:30:24,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:30:28,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:30:30,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:30:32,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:30:51,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:31:15,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:31:27,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:31:30,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:31:37,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:31:42,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:31:49,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:32:04,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:32:06,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:32:11,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:32:14,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:32:16,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:32:20,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:32:23,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:32:24,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:32:27,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:32:29,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:32:31,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:32:33,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:32:33,353 INFO L93 Difference]: Finished difference Result 354 states and 467 transitions. [2022-11-25 18:32:33,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-11-25 18:32:33,354 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 49 states have (on average 1.6122448979591837) internal successors, (79), 44 states have internal predecessors, (79), 16 states have call successors, (18), 11 states have call predecessors, (18), 15 states have return successors, (17), 14 states have call predecessors, (17), 15 states have call successors, (17) Word has length 119 [2022-11-25 18:32:33,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:32:33,359 INFO L225 Difference]: With dead ends: 354 [2022-11-25 18:32:33,359 INFO L226 Difference]: Without dead ends: 352 [2022-11-25 18:32:33,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 67 SyntacticMatches, 4 SemanticMatches, 142 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5813 ImplicationChecksByTransitivity, 396.3s TimeCoverageRelationStatistics Valid=1285, Invalid=18930, Unknown=95, NotChecked=282, Total=20592 [2022-11-25 18:32:33,373 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 693 mSDsluCounter, 2879 mSDsCounter, 0 mSdLazyCounter, 10266 mSolverCounterSat, 660 mSolverCounterUnsat, 261 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 216.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 11219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 10266 IncrementalHoareTripleChecker+Invalid, 261 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 220.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:32:33,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 3005 Invalid, 11219 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [660 Valid, 10266 Invalid, 261 Unknown, 32 Unchecked, 220.1s Time] [2022-11-25 18:32:33,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-11-25 18:32:33,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 294. [2022-11-25 18:32:33,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 192 states have (on average 1.171875) internal successors, (225), 198 states have internal predecessors, (225), 66 states have call successors, (66), 30 states have call predecessors, (66), 35 states have return successors, (86), 65 states have call predecessors, (86), 63 states have call successors, (86) [2022-11-25 18:32:33,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 377 transitions. [2022-11-25 18:32:33,473 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 377 transitions. Word has length 119 [2022-11-25 18:32:33,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:32:33,475 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 377 transitions. [2022-11-25 18:32:33,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 49 states have (on average 1.6122448979591837) internal successors, (79), 44 states have internal predecessors, (79), 16 states have call successors, (18), 11 states have call predecessors, (18), 15 states have return successors, (17), 14 states have call predecessors, (17), 15 states have call successors, (17) [2022-11-25 18:32:33,476 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 377 transitions. [2022-11-25 18:32:33,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-25 18:32:33,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:32:33,483 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:32:33,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:32:33,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:32:33,696 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:32:33,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:32:33,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1509206421, now seen corresponding path program 1 times [2022-11-25 18:32:33,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:32:33,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279363455] [2022-11-25 18:32:33,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:32:33,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:32:33,814 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:32:33,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [226339547] [2022-11-25 18:32:33,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:32:33,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:32:33,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:32:33,821 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:32:33,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 18:32:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:32:34,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-25 18:32:34,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:32:35,816 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 18:32:35,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2022-11-25 18:32:35,825 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 7 [2022-11-25 18:32:35,929 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-25 18:32:35,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:32:35,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:32:35,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279363455] [2022-11-25 18:32:35,930 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:32:35,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226339547] [2022-11-25 18:32:35,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226339547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:32:35,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:32:35,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 18:32:35,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275322272] [2022-11-25 18:32:35,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:32:35,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 18:32:35,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:32:35,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 18:32:35,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:32:35,934 INFO L87 Difference]: Start difference. First operand 294 states and 377 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 5 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-25 18:32:41,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:32:41,179 INFO L93 Difference]: Finished difference Result 650 states and 892 transitions. [2022-11-25 18:32:41,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-25 18:32:41,180 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 5 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 126 [2022-11-25 18:32:41,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:32:41,188 INFO L225 Difference]: With dead ends: 650 [2022-11-25 18:32:41,188 INFO L226 Difference]: Without dead ends: 572 [2022-11-25 18:32:41,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2022-11-25 18:32:41,190 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 221 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:32:41,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 1119 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-25 18:32:41,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-11-25 18:32:41,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 345. [2022-11-25 18:32:41,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 226 states have (on average 1.1725663716814159) internal successors, (265), 233 states have internal predecessors, (265), 77 states have call successors, (77), 34 states have call predecessors, (77), 41 states have return successors, (102), 77 states have call predecessors, (102), 73 states have call successors, (102) [2022-11-25 18:32:41,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 444 transitions. [2022-11-25 18:32:41,321 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 444 transitions. Word has length 126 [2022-11-25 18:32:41,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:32:41,321 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 444 transitions. [2022-11-25 18:32:41,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 5 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-25 18:32:41,322 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 444 transitions. [2022-11-25 18:32:41,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-25 18:32:41,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:32:41,325 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:32:41,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-25 18:32:41,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:32:41,535 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:32:41,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:32:41,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1460904681, now seen corresponding path program 1 times [2022-11-25 18:32:41,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:32:41,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540690320] [2022-11-25 18:32:41,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:32:41,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:32:41,641 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:32:41,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1162788721] [2022-11-25 18:32:41,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:32:41,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:32:41,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:32:41,643 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:32:41,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 18:32:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:32:42,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 2515 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:32:42,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:32:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-25 18:32:42,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:32:42,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:32:42,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540690320] [2022-11-25 18:32:42,261 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:32:42,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162788721] [2022-11-25 18:32:42,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162788721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:32:42,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:32:42,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:32:42,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271818786] [2022-11-25 18:32:42,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:32:42,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:32:42,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:32:42,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:32:42,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:32:42,265 INFO L87 Difference]: Start difference. First operand 345 states and 444 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:32:42,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:32:42,458 INFO L93 Difference]: Finished difference Result 641 states and 846 transitions. [2022-11-25 18:32:42,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:32:42,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 126 [2022-11-25 18:32:42,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:32:42,462 INFO L225 Difference]: With dead ends: 641 [2022-11-25 18:32:42,462 INFO L226 Difference]: Without dead ends: 353 [2022-11-25 18:32:42,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:32:42,464 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 7 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:32:42,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 430 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:32:42,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-11-25 18:32:42,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 344. [2022-11-25 18:32:42,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 226 states have (on average 1.1592920353982301) internal successors, (262), 232 states have internal predecessors, (262), 77 states have call successors, (77), 34 states have call predecessors, (77), 40 states have return successors, (97), 77 states have call predecessors, (97), 73 states have call successors, (97) [2022-11-25 18:32:42,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 436 transitions. [2022-11-25 18:32:42,543 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 436 transitions. Word has length 126 [2022-11-25 18:32:42,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:32:42,544 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 436 transitions. [2022-11-25 18:32:42,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:32:42,544 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 436 transitions. [2022-11-25 18:32:42,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-25 18:32:42,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:32:42,547 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:32:42,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 18:32:42,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:32:42,757 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:32:42,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:32:42,758 INFO L85 PathProgramCache]: Analyzing trace with hash 729857147, now seen corresponding path program 1 times [2022-11-25 18:32:42,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:32:42,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361397960] [2022-11-25 18:32:42,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:32:42,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:32:42,847 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:32:42,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [835647391] [2022-11-25 18:32:42,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:32:42,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:32:42,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:32:42,849 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:32:42,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 18:32:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:32:43,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 2525 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-25 18:32:43,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:32:44,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:32:44,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:32:45,017 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_665 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_666 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_665))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_666))))) is different from true [2022-11-25 18:32:48,076 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-25 18:32:48,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:32:48,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:32:48,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361397960] [2022-11-25 18:32:48,077 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:32:48,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835647391] [2022-11-25 18:32:48,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835647391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:32:48,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:32:48,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-25 18:32:48,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249644468] [2022-11-25 18:32:48,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:32:48,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-25 18:32:48,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:32:48,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-25 18:32:48,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=346, Unknown=22, NotChecked=38, Total=462 [2022-11-25 18:32:48,083 INFO L87 Difference]: Start difference. First operand 344 states and 436 transitions. Second operand has 22 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 7 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) [2022-11-25 18:32:49,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:33:04,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:33:06,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:33:08,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:33:31,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:33:31,824 INFO L93 Difference]: Finished difference Result 984 states and 1340 transitions. [2022-11-25 18:33:31,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-25 18:33:31,825 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 7 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) Word has length 128 [2022-11-25 18:33:31,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:33:31,831 INFO L225 Difference]: With dead ends: 984 [2022-11-25 18:33:31,831 INFO L226 Difference]: Without dead ends: 697 [2022-11-25 18:33:31,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=404, Invalid=2436, Unknown=26, NotChecked=104, Total=2970 [2022-11-25 18:33:31,835 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 333 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 2189 mSolverCounterSat, 218 mSolverCounterUnsat, 121 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 2850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 2189 IncrementalHoareTripleChecker+Invalid, 121 IncrementalHoareTripleChecker+Unknown, 322 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:33:31,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 571 Invalid, 2850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 2189 Invalid, 121 Unknown, 322 Unchecked, 22.4s Time] [2022-11-25 18:33:31,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-11-25 18:33:31,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 619. [2022-11-25 18:33:31,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 407 states have (on average 1.1670761670761671) internal successors, (475), 418 states have internal predecessors, (475), 143 states have call successors, (143), 56 states have call predecessors, (143), 68 states have return successors, (225), 144 states have call predecessors, (225), 136 states have call successors, (225) [2022-11-25 18:33:31,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 843 transitions. [2022-11-25 18:33:31,981 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 843 transitions. Word has length 128 [2022-11-25 18:33:31,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:33:31,981 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 843 transitions. [2022-11-25 18:33:31,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 7 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) [2022-11-25 18:33:31,982 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 843 transitions. [2022-11-25 18:33:31,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-25 18:33:31,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:33:31,985 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-25 18:33:32,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 18:33:32,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-25 18:33:32,201 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:33:32,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:33:32,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1688627331, now seen corresponding path program 1 times [2022-11-25 18:33:32,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:33:32,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413323317] [2022-11-25 18:33:32,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:32,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:33:32,288 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:33:32,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1652651433] [2022-11-25 18:33:32,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:32,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:33:32,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:33:32,290 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:33:32,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 18:33:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:33:32,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 18:33:32,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:33:33,082 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-25 18:33:33,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:33:33,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:33:33,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413323317] [2022-11-25 18:33:33,083 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:33:33,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652651433] [2022-11-25 18:33:33,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652651433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:33:33,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:33:33,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:33:33,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902183395] [2022-11-25 18:33:33,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:33:33,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:33:33,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:33:33,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:33:33,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:33:33,087 INFO L87 Difference]: Start difference. First operand 619 states and 843 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:33:33,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:33:33,885 INFO L93 Difference]: Finished difference Result 1187 states and 1673 transitions. [2022-11-25 18:33:33,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:33:33,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 128 [2022-11-25 18:33:33,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:33:33,891 INFO L225 Difference]: With dead ends: 1187 [2022-11-25 18:33:33,891 INFO L226 Difference]: Without dead ends: 637 [2022-11-25 18:33:33,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:33:33,895 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 10 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:33:33,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 528 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 18:33:33,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-11-25 18:33:34,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 625. [2022-11-25 18:33:34,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 412 states have (on average 1.1529126213592233) internal successors, (475), 424 states have internal predecessors, (475), 143 states have call successors, (143), 56 states have call predecessors, (143), 69 states have return successors, (231), 144 states have call predecessors, (231), 136 states have call successors, (231) [2022-11-25 18:33:34,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 849 transitions. [2022-11-25 18:33:34,039 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 849 transitions. Word has length 128 [2022-11-25 18:33:34,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:33:34,040 INFO L495 AbstractCegarLoop]: Abstraction has 625 states and 849 transitions. [2022-11-25 18:33:34,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:33:34,040 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 849 transitions. [2022-11-25 18:33:34,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-25 18:33:34,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:33:34,045 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-25 18:33:34,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 18:33:34,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:33:34,256 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:33:34,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:33:34,257 INFO L85 PathProgramCache]: Analyzing trace with hash -121869381, now seen corresponding path program 1 times [2022-11-25 18:33:34,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:33:34,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589063079] [2022-11-25 18:33:34,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:34,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:33:34,356 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:33:34,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157613939] [2022-11-25 18:33:34,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:34,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:33:34,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:33:34,359 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:33:34,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 18:33:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:33:34,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 2525 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-25 18:33:34,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:33:34,973 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 18:33:35,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:33:35,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:33:36,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:33:36,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 18:33:36,406 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_952 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_952))) (exists ((v_ArrVal_953 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_953)))) is different from true [2022-11-25 18:33:36,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:33:36,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:33:36,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:33:36,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:33:36,844 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-25 18:33:36,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-25 18:33:37,543 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 18:33:37,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2022-11-25 18:33:37,550 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 7 [2022-11-25 18:33:37,648 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 94 proven. 12 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 18:33:37,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:33:38,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:33:38,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589063079] [2022-11-25 18:33:38,690 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:33:38,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157613939] [2022-11-25 18:33:38,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157613939] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:33:38,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:33:38,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2022-11-25 18:33:38,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764971779] [2022-11-25 18:33:38,691 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-25 18:33:38,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 18:33:38,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:33:38,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 18:33:38,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=196, Unknown=2, NotChecked=28, Total=272 [2022-11-25 18:33:38,695 INFO L87 Difference]: Start difference. First operand 625 states and 849 transitions. Second operand has 15 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 6 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-11-25 18:33:48,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:33:48,443 INFO L93 Difference]: Finished difference Result 1168 states and 1551 transitions. [2022-11-25 18:33:48,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-25 18:33:48,444 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 6 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 128 [2022-11-25 18:33:48,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:33:48,450 INFO L225 Difference]: With dead ends: 1168 [2022-11-25 18:33:48,451 INFO L226 Difference]: Without dead ends: 962 [2022-11-25 18:33:48,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 186 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=150, Invalid=662, Unknown=4, NotChecked=54, Total=870 [2022-11-25 18:33:48,453 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 228 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 1591 mSolverCounterSat, 172 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 2072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1591 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 289 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:33:48,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 880 Invalid, 2072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1591 Invalid, 20 Unknown, 289 Unchecked, 8.2s Time] [2022-11-25 18:33:48,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2022-11-25 18:33:48,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 799. [2022-11-25 18:33:48,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 534 states have (on average 1.149812734082397) internal successors, (614), 550 states have internal predecessors, (614), 172 states have call successors, (172), 76 states have call predecessors, (172), 92 states have return successors, (268), 172 states have call predecessors, (268), 163 states have call successors, (268) [2022-11-25 18:33:48,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1054 transitions. [2022-11-25 18:33:48,598 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1054 transitions. Word has length 128 [2022-11-25 18:33:48,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:33:48,599 INFO L495 AbstractCegarLoop]: Abstraction has 799 states and 1054 transitions. [2022-11-25 18:33:48,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 6 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-11-25 18:33:48,599 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1054 transitions. [2022-11-25 18:33:48,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-25 18:33:48,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:33:48,602 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:33:48,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 18:33:48,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-25 18:33:48,812 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:33:48,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:33:48,813 INFO L85 PathProgramCache]: Analyzing trace with hash -996055097, now seen corresponding path program 1 times [2022-11-25 18:33:48,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:33:48,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393249618] [2022-11-25 18:33:48,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:48,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:33:48,881 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:33:48,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2098261592] [2022-11-25 18:33:48,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:48,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:33:48,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:33:48,883 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:33:48,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6c9206-bd26-4964-a8f4-fafe63f0fbb2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 18:33:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:33:49,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 2484 conjuncts, 114 conjunts are in the unsatisfiable core [2022-11-25 18:33:49,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:33:52,531 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1059 Int) (v_ArrVal_1058 Int) (v_ArrVal_1062 (Array Int Int))) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1062) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1058)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1059)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-25 18:33:54,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:33:54,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:33:54,941 INFO L350 Elim1Store]: Elim1 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 47 treesize of output 35 [2022-11-25 18:33:54,950 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:33:54,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:33:54,960 INFO L350 Elim1Store]: Elim1 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 28 treesize of output 16 [2022-11-25 18:33:54,977 INFO L350 Elim1Store]: Elim1 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 43 treesize of output 31 [2022-11-25 18:33:54,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-11-25 18:33:55,419 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 79 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-25 18:33:55,420 INFO L328 TraceCheckSpWp]: Computing backward predicates...