./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc --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 846a565d6a742f245ca362c4e2fb63bb4d14b5e5473527f5da84e078cffb2df4 --- 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-5e519f3 [2022-11-02 20:55:10,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:55:10,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:55:10,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:55:10,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:55:10,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:55:10,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:55:10,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:55:10,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:55:10,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:55:10,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:55:10,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:55:10,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:55:10,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:55:10,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:55:10,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:55:10,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:55:10,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:55:10,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:55:10,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:55:10,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:55:10,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:55:10,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:55:10,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:55:10,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:55:10,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:55:10,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:55:10,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:55:10,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:55:10,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:55:10,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:55:10,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:55:10,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:55:10,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:55:10,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:55:10,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:55:10,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:55:10,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:55:10,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:55:10,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:55:10,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:55:10,832 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:55:10,856 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:55:10,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:55:10,856 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:55:10,857 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:55:10,857 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:55:10,858 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:55:10,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:55:10,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:55:10,859 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:55:10,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:55:10,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:55:10,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:55:10,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:55:10,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:55:10,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:55:10,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:55:10,860 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:55:10,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:55:10,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:55:10,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:55:10,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:55:10,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:55:10,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:55:10,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:55:10,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:55:10,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:55:10,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:55:10,862 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:55:10,862 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:55:10,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:55:10,863 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 846a565d6a742f245ca362c4e2fb63bb4d14b5e5473527f5da84e078cffb2df4 [2022-11-02 20:55:11,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:55:11,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:55:11,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:55:11,178 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:55:11,179 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:55:11,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i [2022-11-02 20:55:11,244 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/data/deda2b0ad/3bd3430319b046e98b4e9701f5ded772/FLAGfa9baeb07 [2022-11-02 20:55:12,062 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:55:12,062 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i [2022-11-02 20:55:12,109 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/data/deda2b0ad/3bd3430319b046e98b4e9701f5ded772/FLAGfa9baeb07 [2022-11-02 20:55:12,612 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/data/deda2b0ad/3bd3430319b046e98b4e9701f5ded772 [2022-11-02 20:55:12,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:55:12,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:55:12,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:55:12,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:55:12,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:55:12,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:55:12" (1/1) ... [2022-11-02 20:55:12,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@107483c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:12, skipping insertion in model container [2022-11-02 20:55:12,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:55:12" (1/1) ... [2022-11-02 20:55:12,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:55:12,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:55:13,168 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i[4504,4517] [2022-11-02 20:55:13,177 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i[4564,4577] [2022-11-02 20:55:14,289 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:14,290 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:14,291 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:14,291 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:14,292 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:14,306 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:14,307 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:14,309 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:14,309 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:14,312 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:14,313 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:14,314 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:14,314 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:14,767 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 20:55:14,768 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 20:55:14,769 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 20:55:14,771 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 20:55:14,772 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 20:55:14,773 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 20:55:14,774 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 20:55:14,775 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 20:55:14,775 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 20:55:14,776 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 20:55:15,024 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-02 20:55:15,436 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,439 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,463 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,466 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,473 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,474 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,497 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,499 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,499 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,501 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,501 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,502 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,502 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:55:15,604 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:55:15,631 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i[4504,4517] [2022-11-02 20:55:15,632 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i[4564,4577] [2022-11-02 20:55:15,676 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,677 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,678 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,678 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,679 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,686 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,688 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,691 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,691 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,692 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,693 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,693 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,694 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,726 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 20:55:15,727 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 20:55:15,728 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 20:55:15,729 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 20:55:15,729 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 20:55:15,730 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 20:55:15,730 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 20:55:15,731 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 20:55:15,731 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 20:55:15,732 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 20:55:15,756 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-02 20:55:15,927 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,928 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,938 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,939 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,943 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,944 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,961 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,962 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,963 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,963 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,964 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,965 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,966 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:55:15,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:55:16,302 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:55:16,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:16 WrapperNode [2022-11-02 20:55:16,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:55:16,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:55:16,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:55:16,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:55:16,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:16" (1/1) ... [2022-11-02 20:55:16,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:16" (1/1) ... [2022-11-02 20:55:16,484 INFO L138 Inliner]: procedures = 774, calls = 2433, calls flagged for inlining = 68, calls inlined = 11, statements flattened = 608 [2022-11-02 20:55:16,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:55:16,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:55:16,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:55:16,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:55:16,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:16" (1/1) ... [2022-11-02 20:55:16,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:16" (1/1) ... [2022-11-02 20:55:16,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:16" (1/1) ... [2022-11-02 20:55:16,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:16" (1/1) ... [2022-11-02 20:55:16,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:16" (1/1) ... [2022-11-02 20:55:16,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:16" (1/1) ... [2022-11-02 20:55:16,534 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:16" (1/1) ... [2022-11-02 20:55:16,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:16" (1/1) ... [2022-11-02 20:55:16,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:55:16,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:55:16,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:55:16,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:55:16,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:16" (1/1) ... [2022-11-02 20:55:16,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:55:16,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:55:16,610 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:55:16,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:55:16,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-02 20:55:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:55:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-02 20:55:16,666 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-02 20:55:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 20:55:16,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 20:55:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-11-02 20:55:16,667 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-11-02 20:55:16,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:55:16,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:55:16,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:55:16,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:55:16,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:55:16,668 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-02 20:55:16,669 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-02 20:55:16,669 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-02 20:55:16,669 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-02 20:55:16,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:55:16,669 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-02 20:55:16,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-02 20:55:16,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:55:16,670 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-02 20:55:16,670 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-02 20:55:16,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:55:16,670 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-11-02 20:55:16,671 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-11-02 20:55:16,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:55:16,671 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_get_entry_count [2022-11-02 20:55:16,671 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_get_entry_count [2022-11-02 20:55:16,672 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-11-02 20:55:16,672 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-11-02 20:55:16,672 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 20:55:16,672 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 20:55:16,672 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-11-02 20:55:16,672 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-11-02 20:55:16,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:55:16,673 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-02 20:55:16,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-02 20:55:16,674 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-02 20:55:16,674 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-02 20:55:16,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:55:17,064 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:55:17,066 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:55:18,184 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:55:18,197 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:55:18,197 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:55:18,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:55:18 BoogieIcfgContainer [2022-11-02 20:55:18,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:55:18,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:55:18,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:55:18,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:55:18,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:55:12" (1/3) ... [2022-11-02 20:55:18,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c57974d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:55:18, skipping insertion in model container [2022-11-02 20:55:18,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:16" (2/3) ... [2022-11-02 20:55:18,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c57974d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:55:18, skipping insertion in model container [2022-11-02 20:55:18,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:55:18" (3/3) ... [2022-11-02 20:55:18,218 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_get_entry_count_harness.i [2022-11-02 20:55:18,247 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:55:18,248 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:55:18,339 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:55:18,353 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;@589a691, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:55:18,353 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:55:18,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 73 states have (on average 1.1506849315068493) internal successors, (84), 74 states have internal predecessors, (84), 26 states have call successors, (26), 14 states have call predecessors, (26), 14 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-02 20:55:18,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-02 20:55:18,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:18,373 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:18,373 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:18,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:18,381 INFO L85 PathProgramCache]: Analyzing trace with hash 2047836461, now seen corresponding path program 1 times [2022-11-02 20:55:18,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:18,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593674070] [2022-11-02 20:55:18,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:18,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:19,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:19,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593674070] [2022-11-02 20:55:19,068 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-02 20:55:19,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550118378] [2022-11-02 20:55:19,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:19,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:55:19,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:55:19,071 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:55:19,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:55:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:19,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 2325 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-02 20:55:19,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:19,836 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-11-02 20:55:19,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:55:19,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550118378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:19,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:19,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:55:19,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594365344] [2022-11-02 20:55:19,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:19,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:55:19,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:19,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:55:19,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:55:19,877 INFO L87 Difference]: Start difference. First operand has 115 states, 73 states have (on average 1.1506849315068493) internal successors, (84), 74 states have internal predecessors, (84), 26 states have call successors, (26), 14 states have call predecessors, (26), 14 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 20:55:19,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:19,911 INFO L93 Difference]: Finished difference Result 222 states and 274 transitions. [2022-11-02 20:55:19,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:55:19,914 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 106 [2022-11-02 20:55:19,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:19,922 INFO L225 Difference]: With dead ends: 222 [2022-11-02 20:55:19,923 INFO L226 Difference]: Without dead ends: 109 [2022-11-02 20:55:19,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:55:19,930 INFO L413 NwaCegarLoop]: 134 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, 134 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 [2022-11-02 20:55:19,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:55:19,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-02 20:55:19,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2022-11-02 20:55:19,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 68 states have (on average 1.1323529411764706) internal successors, (77), 69 states have internal predecessors, (77), 26 states have call successors, (26), 14 states have call predecessors, (26), 14 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-02 20:55:19,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 128 transitions. [2022-11-02 20:55:19,978 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 128 transitions. Word has length 106 [2022-11-02 20:55:19,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:19,978 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 128 transitions. [2022-11-02 20:55:19,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 20:55:19,979 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 128 transitions. [2022-11-02 20:55:19,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-02 20:55:19,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:19,982 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:20,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:20,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-02 20:55:20,208 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:20,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:20,209 INFO L85 PathProgramCache]: Analyzing trace with hash -637484239, now seen corresponding path program 1 times [2022-11-02 20:55:20,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:20,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234831802] [2022-11-02 20:55:20,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:20,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:20,301 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:55:20,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [179443070] [2022-11-02 20:55:20,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:20,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:55:20,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:55:20,303 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:55:20,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:55:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:20,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 2325 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:55:20,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:20,921 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-02 20:55:20,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:55:20,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:20,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234831802] [2022-11-02 20:55:20,922 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:55:20,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179443070] [2022-11-02 20:55:20,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179443070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:20,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:20,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:55:20,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264871442] [2022-11-02 20:55:20,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:20,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:55:20,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:20,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:55:20,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:55:20,926 INFO L87 Difference]: Start difference. First operand 109 states and 128 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), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-02 20:55:20,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:20,976 INFO L93 Difference]: Finished difference Result 211 states and 248 transitions. [2022-11-02 20:55:20,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:55:20,977 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), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 106 [2022-11-02 20:55:20,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:20,978 INFO L225 Difference]: With dead ends: 211 [2022-11-02 20:55:20,979 INFO L226 Difference]: Without dead ends: 114 [2022-11-02 20:55:20,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:55:20,981 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 2 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:20,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 495 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:55:20,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-02 20:55:20,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2022-11-02 20:55:20,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 72 states have (on average 1.125) internal successors, (81), 73 states have internal predecessors, (81), 26 states have call successors, (26), 14 states have call predecessors, (26), 15 states have return successors, (26), 26 states have call predecessors, (26), 25 states have call successors, (26) [2022-11-02 20:55:20,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2022-11-02 20:55:20,994 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 106 [2022-11-02 20:55:20,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:20,995 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2022-11-02 20:55:20,996 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), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-02 20:55:20,996 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2022-11-02 20:55:20,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-02 20:55:20,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:20,998 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:21,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:21,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:55:21,224 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:21,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:21,225 INFO L85 PathProgramCache]: Analyzing trace with hash -810988303, now seen corresponding path program 1 times [2022-11-02 20:55:21,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:21,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953737883] [2022-11-02 20:55:21,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:21,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:22,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:55:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:22,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:55:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:22,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:55:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:23,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:55:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:23,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:55:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:23,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:55:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:23,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:55:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:23,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:55:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:23,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:55:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:23,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:55:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:23,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:55:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:23,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:55:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:23,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-02 20:55:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:23,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 20:55:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:23,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:55:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:23,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:55:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:23,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:55:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:23,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-02 20:55:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:23,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 20:55:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:23,635 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-02 20:55:23,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:23,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953737883] [2022-11-02 20:55:23,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953737883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:23,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:23,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-02 20:55:23,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607840456] [2022-11-02 20:55:23,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:23,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:55:23,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:23,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:55:23,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:55:23,641 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-02 20:55:24,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:24,555 INFO L93 Difference]: Finished difference Result 220 states and 258 transitions. [2022-11-02 20:55:24,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:55:24,556 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 118 [2022-11-02 20:55:24,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:24,559 INFO L225 Difference]: With dead ends: 220 [2022-11-02 20:55:24,560 INFO L226 Difference]: Without dead ends: 130 [2022-11-02 20:55:24,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:55:24,562 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 131 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:24,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 516 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:55:24,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-02 20:55:24,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 119. [2022-11-02 20:55:24,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 76 states have (on average 1.131578947368421) internal successors, (86), 78 states have internal predecessors, (86), 26 states have call successors, (26), 14 states have call predecessors, (26), 16 states have return successors, (27), 26 states have call predecessors, (27), 25 states have call successors, (27) [2022-11-02 20:55:24,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2022-11-02 20:55:24,599 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 118 [2022-11-02 20:55:24,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:24,601 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2022-11-02 20:55:24,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-02 20:55:24,601 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2022-11-02 20:55:24,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-02 20:55:24,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:24,609 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:24,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:55:24,609 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:24,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:24,610 INFO L85 PathProgramCache]: Analyzing trace with hash -367087629, now seen corresponding path program 1 times [2022-11-02 20:55:24,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:24,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729715371] [2022-11-02 20:55:24,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:24,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:25,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:55:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:25,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:55:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:25,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:55:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:25,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:55:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:25,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:55:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:25,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:55:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:25,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:55:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:25,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:55:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:25,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:55:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:25,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:55:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:25,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:55:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:25,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:55:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:25,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-02 20:55:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:25,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 20:55:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:25,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:55:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:25,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:55:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:25,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:55:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:25,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-02 20:55:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:25,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 20:55:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:25,499 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-02 20:55:25,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:25,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729715371] [2022-11-02 20:55:25,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729715371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:25,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:25,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:55:25,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88215878] [2022-11-02 20:55:25,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:25,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:55:25,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:25,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:55:25,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:55:25,505 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-02 20:55:26,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:26,022 INFO L93 Difference]: Finished difference Result 227 states and 266 transitions. [2022-11-02 20:55:26,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:55:26,023 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 118 [2022-11-02 20:55:26,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:26,024 INFO L225 Difference]: With dead ends: 227 [2022-11-02 20:55:26,024 INFO L226 Difference]: Without dead ends: 125 [2022-11-02 20:55:26,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:55:26,026 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 131 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:26,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 353 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:55:26,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-02 20:55:26,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2022-11-02 20:55:26,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 74 states have (on average 1.1081081081081081) internal successors, (82), 76 states have internal predecessors, (82), 26 states have call successors, (26), 14 states have call predecessors, (26), 16 states have return successors, (27), 26 states have call predecessors, (27), 25 states have call successors, (27) [2022-11-02 20:55:26,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2022-11-02 20:55:26,048 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 118 [2022-11-02 20:55:26,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:26,049 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2022-11-02 20:55:26,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-02 20:55:26,049 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2022-11-02 20:55:26,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-02 20:55:26,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:26,051 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:26,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:55:26,052 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:26,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:26,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1450180354, now seen corresponding path program 1 times [2022-11-02 20:55:26,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:26,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309375713] [2022-11-02 20:55:26,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:26,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:26,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:55:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:26,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:55:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:26,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:55:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:26,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:55:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:26,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:55:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:26,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:55:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:26,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:55:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:26,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:55:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:26,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:55:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:26,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:55:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:26,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:55:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:26,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:55:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:27,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:55:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:27,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 20:55:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:27,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-02 20:55:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:27,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:55:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:27,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:55:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:27,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:55:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:27,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 20:55:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:27,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-02 20:55:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-02 20:55:27,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:27,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309375713] [2022-11-02 20:55:27,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309375713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:27,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:27,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:55:27,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965037753] [2022-11-02 20:55:27,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:27,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:55:27,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:27,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:55:27,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:55:27,237 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand has 10 states, 9 states have (on average 6.0) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-02 20:55:28,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:28,099 INFO L93 Difference]: Finished difference Result 220 states and 255 transitions. [2022-11-02 20:55:28,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:55:28,100 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 124 [2022-11-02 20:55:28,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:28,103 INFO L225 Difference]: With dead ends: 220 [2022-11-02 20:55:28,108 INFO L226 Difference]: Without dead ends: 125 [2022-11-02 20:55:28,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:55:28,112 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 63 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:28,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 523 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:55:28,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-02 20:55:28,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2022-11-02 20:55:28,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 74 states have (on average 1.0945945945945945) internal successors, (81), 76 states have internal predecessors, (81), 26 states have call successors, (26), 14 states have call predecessors, (26), 16 states have return successors, (27), 26 states have call predecessors, (27), 25 states have call successors, (27) [2022-11-02 20:55:28,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 134 transitions. [2022-11-02 20:55:28,143 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 134 transitions. Word has length 124 [2022-11-02 20:55:28,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:28,144 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 134 transitions. [2022-11-02 20:55:28,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-02 20:55:28,145 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 134 transitions. [2022-11-02 20:55:28,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-02 20:55:28,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:28,152 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:28,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:55:28,155 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:28,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:28,156 INFO L85 PathProgramCache]: Analyzing trace with hash -407882531, now seen corresponding path program 1 times [2022-11-02 20:55:28,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:28,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409473732] [2022-11-02 20:55:28,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:28,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:29,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:55:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:29,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:55:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:29,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:55:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:29,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:55:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:29,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:55:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:29,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:55:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:29,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:55:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:29,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:55:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:29,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:55:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:29,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:55:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:29,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:55:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:29,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:55:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:29,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:55:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:29,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:55:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:29,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:55:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:29,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:55:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:29,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:55:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:29,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:55:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:29,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:55:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:29,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 20:55:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:29,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-02 20:55:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:29,543 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-02 20:55:29,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:29,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409473732] [2022-11-02 20:55:29,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409473732] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:55:29,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151462084] [2022-11-02 20:55:29,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:29,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:55:29,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:55:29,545 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:55:29,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:55:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:30,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 2387 conjuncts, 107 conjunts are in the unsatisfiable core [2022-11-02 20:55:30,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:30,349 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:55:30,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:55:30,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151462084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:30,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:55:30,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 12 [2022-11-02 20:55:30,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819350245] [2022-11-02 20:55:30,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:30,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:55:30,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:30,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:55:30,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:55:30,351 INFO L87 Difference]: Start difference. First operand 117 states and 134 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-11-02 20:55:30,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:30,525 INFO L93 Difference]: Finished difference Result 224 states and 255 transitions. [2022-11-02 20:55:30,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:55:30,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 129 [2022-11-02 20:55:30,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:30,528 INFO L225 Difference]: With dead ends: 224 [2022-11-02 20:55:30,528 INFO L226 Difference]: Without dead ends: 119 [2022-11-02 20:55:30,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:55:30,529 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 18 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:30,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 521 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:55:30,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-02 20:55:30,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-11-02 20:55:30,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 75 states have (on average 1.0933333333333333) internal successors, (82), 78 states have internal predecessors, (82), 26 states have call successors, (26), 14 states have call predecessors, (26), 17 states have return successors, (28), 26 states have call predecessors, (28), 25 states have call successors, (28) [2022-11-02 20:55:30,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 136 transitions. [2022-11-02 20:55:30,544 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 136 transitions. Word has length 129 [2022-11-02 20:55:30,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:30,544 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 136 transitions. [2022-11-02 20:55:30,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-11-02 20:55:30,545 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 136 transitions. [2022-11-02 20:55:30,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-02 20:55:30,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:30,547 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:30,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:30,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:55:30,760 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:30,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:30,761 INFO L85 PathProgramCache]: Analyzing trace with hash 118090552, now seen corresponding path program 1 times [2022-11-02 20:55:30,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:30,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504497682] [2022-11-02 20:55:30,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:30,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:30,842 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:55:30,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [124221129] [2022-11-02 20:55:30,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:30,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:55:30,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:55:30,844 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:55:30,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:55:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:31,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 2492 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:55:31,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:31,535 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-02 20:55:31,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:55:31,957 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-02 20:55:31,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:31,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504497682] [2022-11-02 20:55:31,958 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:55:31,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124221129] [2022-11-02 20:55:31,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124221129] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:55:31,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:55:31,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2022-11-02 20:55:31,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52030440] [2022-11-02 20:55:31,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:31,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:55:31,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:31,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:55:31,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:55:31,960 INFO L87 Difference]: Start difference. First operand 119 states and 136 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-02 20:55:32,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:32,057 INFO L93 Difference]: Finished difference Result 169 states and 190 transitions. [2022-11-02 20:55:32,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:55:32,058 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 135 [2022-11-02 20:55:32,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:32,061 INFO L225 Difference]: With dead ends: 169 [2022-11-02 20:55:32,061 INFO L226 Difference]: Without dead ends: 117 [2022-11-02 20:55:32,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:55:32,063 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 3 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:32,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 675 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:55:32,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-02 20:55:32,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 112. [2022-11-02 20:55:32,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 72 states have internal predecessors, (75), 26 states have call successors, (26), 14 states have call predecessors, (26), 15 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26) [2022-11-02 20:55:32,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2022-11-02 20:55:32,076 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 135 [2022-11-02 20:55:32,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:32,077 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2022-11-02 20:55:32,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-02 20:55:32,077 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2022-11-02 20:55:32,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-02 20:55:32,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:32,079 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:32,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:32,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:55:32,304 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:32,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:32,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1559546925, now seen corresponding path program 1 times [2022-11-02 20:55:32,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:32,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38631308] [2022-11-02 20:55:32,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:32,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:32,383 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:55:32,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1711828562] [2022-11-02 20:55:32,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:32,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:55:32,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:55:32,385 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:55:32,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:55:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:33,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 2597 conjuncts, 209 conjunts are in the unsatisfiable core [2022-11-02 20:55:33,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:33,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:55:33,516 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-02 20:55:33,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-02 20:55:33,556 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-02 20:55:34,087 INFO L356 Elim1Store]: treesize reduction 122, result has 22.3 percent of original size [2022-11-02 20:55:34,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 115 treesize of output 129 [2022-11-02 20:55:34,415 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-02 20:55:34,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:55:34,504 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-11-02 20:55:34,616 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:55:34,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:55:34,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:55:34,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 21 treesize of output 26 [2022-11-02 20:55:34,642 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:55:35,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:55:35,765 INFO L356 Elim1Store]: treesize reduction 126, result has 25.9 percent of original size [2022-11-02 20:55:35,766 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 38 treesize of output 65 [2022-11-02 20:55:35,957 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2022-11-02 20:55:35,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:55:35,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-02 20:55:35,974 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-02 20:55:36,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-02 20:55:36,200 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_806 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_806) |c_#memory_int|)) (exists ((v_ArrVal_807 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_807) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_805 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_805)))) is different from true [2022-11-02 20:55:36,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-02 20:55:36,508 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_810 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_810) |c_#memory_int|)) (exists ((v_ArrVal_808 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_808) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_809 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_809)))) is different from true [2022-11-02 20:55:36,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:55:36,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:55:36,819 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-11-02 20:55:36,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:55:36,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:55:36,836 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2022-11-02 20:55:36,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:55:36,852 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-02 20:55:36,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:55:36,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:55:36,888 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-02 20:55:36,889 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2022-11-02 20:55:37,532 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:55:37,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 53 treesize of output 45 [2022-11-02 20:55:37,540 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 7 [2022-11-02 20:55:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 27 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 6 not checked. [2022-11-02 20:55:37,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:55:38,910 INFO L356 Elim1Store]: treesize reduction 4, result has 87.1 percent of original size [2022-11-02 20:55:38,910 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 846 treesize of output 745 [2022-11-02 20:55:38,942 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:55:38,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 718 treesize of output 664 [2022-11-02 20:55:38,972 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:55:38,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 646 treesize of output 520 [2022-11-02 20:56:00,898 WARN L234 SmtUtils]: Spent 9.33s on a formula simplification. DAG size of input: 89 DAG size of output: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 20:56:00,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:00,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38631308] [2022-11-02 20:56:00,900 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:56:00,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711828562] [2022-11-02 20:56:00,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711828562] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:00,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:56:00,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2022-11-02 20:56:00,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100647772] [2022-11-02 20:56:00,901 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:00,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-02 20:56:00,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:00,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-02 20:56:00,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1754, Unknown=10, NotChecked=170, Total=2070 [2022-11-02 20:56:00,904 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand has 38 states, 32 states have (on average 2.84375) internal successors, (91), 33 states have internal predecessors, (91), 17 states have call successors, (24), 8 states have call predecessors, (24), 12 states have return successors, (23), 16 states have call predecessors, (23), 16 states have call successors, (23) [2022-11-02 20:56:01,395 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_806 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_806) |c_#memory_int|)) (exists ((v_ArrVal_807 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_807) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_805 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_805))) (exists ((|v___CPROVER_overflow_mult_~#c~1.base_72| Int) (v_ArrVal_793 Int)) (and (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_72| v_ArrVal_793)) (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_72|) 0)))) is different from true [2022-11-02 20:56:03,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:03,212 INFO L93 Difference]: Finished difference Result 203 states and 230 transitions. [2022-11-02 20:56:03,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-02 20:56:03,214 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 32 states have (on average 2.84375) internal successors, (91), 33 states have internal predecessors, (91), 17 states have call successors, (24), 8 states have call predecessors, (24), 12 states have return successors, (23), 16 states have call predecessors, (23), 16 states have call successors, (23) Word has length 141 [2022-11-02 20:56:03,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:03,215 INFO L225 Difference]: With dead ends: 203 [2022-11-02 20:56:03,215 INFO L226 Difference]: Without dead ends: 198 [2022-11-02 20:56:03,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 109 SyntacticMatches, 15 SemanticMatches, 66 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=285, Invalid=3862, Unknown=25, NotChecked=384, Total=4556 [2022-11-02 20:56:03,220 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 130 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 2184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1483 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:03,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 955 Invalid, 2184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 590 Invalid, 0 Unknown, 1483 Unchecked, 0.7s Time] [2022-11-02 20:56:03,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-02 20:56:03,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 192. [2022-11-02 20:56:03,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 124 states have (on average 1.0564516129032258) internal successors, (131), 128 states have internal predecessors, (131), 39 states have call successors, (39), 25 states have call predecessors, (39), 28 states have return successors, (45), 38 states have call predecessors, (45), 38 states have call successors, (45) [2022-11-02 20:56:03,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 215 transitions. [2022-11-02 20:56:03,240 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 215 transitions. Word has length 141 [2022-11-02 20:56:03,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:03,241 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 215 transitions. [2022-11-02 20:56:03,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 32 states have (on average 2.84375) internal successors, (91), 33 states have internal predecessors, (91), 17 states have call successors, (24), 8 states have call predecessors, (24), 12 states have return successors, (23), 16 states have call predecessors, (23), 16 states have call successors, (23) [2022-11-02 20:56:03,241 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 215 transitions. [2022-11-02 20:56:03,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:56:03,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:03,244 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:03,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:03,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:03,452 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:03,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:03,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1135210311, now seen corresponding path program 1 times [2022-11-02 20:56:03,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:03,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334154996] [2022-11-02 20:56:03,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:03,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:03,519 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:56:03,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936038690] [2022-11-02 20:56:03,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:03,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:03,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:03,521 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:03,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:56:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:04,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 2601 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:56:04,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:04,199 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-02 20:56:04,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:04,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:04,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334154996] [2022-11-02 20:56:04,199 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:56:04,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936038690] [2022-11-02 20:56:04,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936038690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:04,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:04,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:56:04,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370291857] [2022-11-02 20:56:04,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:04,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:56:04,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:04,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:56:04,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:04,201 INFO L87 Difference]: Start difference. First operand 192 states and 215 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-02 20:56:04,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:04,260 INFO L93 Difference]: Finished difference Result 300 states and 337 transitions. [2022-11-02 20:56:04,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:56:04,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) Word has length 147 [2022-11-02 20:56:04,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:04,262 INFO L225 Difference]: With dead ends: 300 [2022-11-02 20:56:04,262 INFO L226 Difference]: Without dead ends: 187 [2022-11-02 20:56:04,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:56:04,263 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 2 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:04,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 734 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:04,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-02 20:56:04,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2022-11-02 20:56:04,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 121 states have (on average 1.0413223140495869) internal successors, (126), 124 states have internal predecessors, (126), 38 states have call successors, (38), 25 states have call predecessors, (38), 27 states have return successors, (42), 37 states have call predecessors, (42), 37 states have call successors, (42) [2022-11-02 20:56:04,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 206 transitions. [2022-11-02 20:56:04,291 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 206 transitions. Word has length 147 [2022-11-02 20:56:04,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:04,292 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 206 transitions. [2022-11-02 20:56:04,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-02 20:56:04,292 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 206 transitions. [2022-11-02 20:56:04,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:56:04,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:04,295 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:04,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:04,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-02 20:56:04,520 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:04,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:04,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1247111653, now seen corresponding path program 1 times [2022-11-02 20:56:04,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:04,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313871055] [2022-11-02 20:56:04,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:04,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:04,589 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:56:04,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [722102315] [2022-11-02 20:56:04,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:04,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:04,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:04,591 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:04,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:56:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:05,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 2601 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:56:05,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:05,274 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-02 20:56:05,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:05,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:05,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313871055] [2022-11-02 20:56:05,274 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:56:05,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722102315] [2022-11-02 20:56:05,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722102315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:05,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:05,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:56:05,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650306079] [2022-11-02 20:56:05,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:05,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:56:05,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:05,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:56:05,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:05,277 INFO L87 Difference]: Start difference. First operand 187 states and 206 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (23), 4 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-02 20:56:05,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:05,356 INFO L93 Difference]: Finished difference Result 261 states and 280 transitions. [2022-11-02 20:56:05,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:56:05,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (23), 4 states have call predecessors, (23), 2 states have call successors, (23) Word has length 147 [2022-11-02 20:56:05,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:05,358 INFO L225 Difference]: With dead ends: 261 [2022-11-02 20:56:05,358 INFO L226 Difference]: Without dead ends: 149 [2022-11-02 20:56:05,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:56:05,359 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 2 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:05,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 711 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:05,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-02 20:56:05,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2022-11-02 20:56:05,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 97 states have internal predecessors, (98), 28 states have call successors, (28), 22 states have call predecessors, (28), 22 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-02 20:56:05,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 153 transitions. [2022-11-02 20:56:05,373 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 153 transitions. Word has length 147 [2022-11-02 20:56:05,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:05,374 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 153 transitions. [2022-11-02 20:56:05,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (23), 4 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-02 20:56:05,374 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 153 transitions. [2022-11-02 20:56:05,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-02 20:56:05,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:05,376 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:05,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:05,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:56:05,593 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:05,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:05,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1487179052, now seen corresponding path program 1 times [2022-11-02 20:56:05,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:05,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250325794] [2022-11-02 20:56:05,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:05,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:05,659 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:56:05,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [493009589] [2022-11-02 20:56:05,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:05,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:05,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:05,661 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:05,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:56:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:06,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 2642 conjuncts, 219 conjunts are in the unsatisfiable core [2022-11-02 20:56:06,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:06,437 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:56:06,757 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-02 20:56:06,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-02 20:56:06,802 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2022-11-02 20:56:06,846 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-02 20:56:07,009 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 20:56:07,010 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 11 [2022-11-02 20:56:07,399 INFO L356 Elim1Store]: treesize reduction 183, result has 22.1 percent of original size [2022-11-02 20:56:07,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 74 treesize of output 105 [2022-11-02 20:56:07,844 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2022-11-02 20:56:07,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:07,933 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:56:07,934 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2022-11-02 20:56:08,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:56:08,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:08,099 INFO L356 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2022-11-02 20:56:08,100 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 37 [2022-11-02 20:56:08,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:56:09,295 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-02 20:56:09,295 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-02 20:56:09,663 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1326 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1326))) (exists ((v_ArrVal_1325 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1325) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-02 20:56:09,864 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1328 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_1328))) (exists ((v_ArrVal_1327 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_1327)))) is different from true [2022-11-02 20:56:10,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:10,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:10,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 35 [2022-11-02 20:56:10,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:10,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:10,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2022-11-02 20:56:10,062 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-02 20:56:10,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-11-02 20:56:10,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 32 treesize of output 30 [2022-11-02 20:56:10,700 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 [2022-11-02 20:56:11,024 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 [2022-11-02 20:56:11,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 32 treesize of output 30 [2022-11-02 20:56:11,452 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:56:11,452 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 53 treesize of output 45 [2022-11-02 20:56:11,461 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 7 [2022-11-02 20:56:11,664 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 8 trivial. 6 not checked. [2022-11-02 20:56:11,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:12,197 INFO L356 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2022-11-02 20:56:12,198 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 23 [2022-11-02 20:56:12,290 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1331 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_1331) |c_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.base|) |c_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.offset|) |c_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~state~14#1.base|)) (forall ((v_ArrVal_1332 (Array Int Int))) (= |c_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~state~14#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_1332) |c_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.base|) |c_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.offset|)))) is different from false [2022-11-02 20:56:12,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:12,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250325794] [2022-11-02 20:56:12,301 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:56:12,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493009589] [2022-11-02 20:56:12,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493009589] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:12,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:56:12,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2022-11-02 20:56:12,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35651478] [2022-11-02 20:56:12,302 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:12,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-02 20:56:12,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:12,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-02 20:56:12,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1908, Unknown=21, NotChecked=270, Total=2352 [2022-11-02 20:56:12,304 INFO L87 Difference]: Start difference. First operand 146 states and 153 transitions. Second operand has 41 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 states have internal predecessors, (93), 18 states have call successors, (25), 9 states have call predecessors, (25), 12 states have return successors, (24), 17 states have call predecessors, (24), 17 states have call successors, (24) [2022-11-02 20:56:12,741 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v___CPROVER_overflow_mult_~#c~1.base_89| Int) (v_ArrVal_1313 Int)) (and (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_89| v_ArrVal_1313)) (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_89|) 0))) (exists ((v_ArrVal_1326 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1326))) (exists ((v_ArrVal_1325 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1325) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-02 20:56:12,947 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1328 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_1328))) (exists ((|v___CPROVER_overflow_mult_~#c~1.base_89| Int) (v_ArrVal_1313 Int)) (and (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_89| v_ArrVal_1313)) (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_89|) 0))) (exists ((v_ArrVal_1327 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_1327)))) is different from true [2022-11-02 20:56:15,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:15,188 INFO L93 Difference]: Finished difference Result 160 states and 164 transitions. [2022-11-02 20:56:15,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-02 20:56:15,189 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 states have internal predecessors, (93), 18 states have call successors, (25), 9 states have call predecessors, (25), 12 states have return successors, (24), 17 states have call predecessors, (24), 17 states have call successors, (24) Word has length 148 [2022-11-02 20:56:15,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:15,191 INFO L225 Difference]: With dead ends: 160 [2022-11-02 20:56:15,191 INFO L226 Difference]: Without dead ends: 158 [2022-11-02 20:56:15,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 104 SyntacticMatches, 16 SemanticMatches, 73 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1462 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=334, Invalid=4483, Unknown=33, NotChecked=700, Total=5550 [2022-11-02 20:56:15,194 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 73 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 2058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1328 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:15,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 577 Invalid, 2058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 692 Invalid, 0 Unknown, 1328 Unchecked, 0.8s Time] [2022-11-02 20:56:15,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-11-02 20:56:15,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 146. [2022-11-02 20:56:15,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 96 states have (on average 1.03125) internal successors, (99), 97 states have internal predecessors, (99), 26 states have call successors, (26), 23 states have call predecessors, (26), 23 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-02 20:56:15,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 150 transitions. [2022-11-02 20:56:15,222 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 150 transitions. Word has length 148 [2022-11-02 20:56:15,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:15,225 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 150 transitions. [2022-11-02 20:56:15,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 states have internal predecessors, (93), 18 states have call successors, (25), 9 states have call predecessors, (25), 12 states have return successors, (24), 17 states have call predecessors, (24), 17 states have call successors, (24) [2022-11-02 20:56:15,226 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 150 transitions. [2022-11-02 20:56:15,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-02 20:56:15,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:15,228 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:15,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:15,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:15,452 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:15,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:15,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1907889842, now seen corresponding path program 1 times [2022-11-02 20:56:15,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:15,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524729784] [2022-11-02 20:56:15,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:15,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:15,522 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:56:15,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1553279475] [2022-11-02 20:56:15,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:15,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:15,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:15,524 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:15,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:56:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:16,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 2630 conjuncts, 120 conjunts are in the unsatisfiable core [2022-11-02 20:56:16,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:16,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:56:16,372 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-02 20:56:16,372 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-02 20:56:16,787 INFO L356 Elim1Store]: treesize reduction 183, result has 22.1 percent of original size [2022-11-02 20:56:16,788 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 74 treesize of output 105 [2022-11-02 20:56:17,061 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-02 20:56:17,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-02 20:56:17,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:56:17,181 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 33 [2022-11-02 20:56:18,237 INFO L356 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2022-11-02 20:56:18,237 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 53 [2022-11-02 20:56:18,452 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:56:18,452 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 43 treesize of output 75 [2022-11-02 20:56:18,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 47 treesize of output 35 [2022-11-02 20:56:18,733 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-02 20:56:18,812 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1501 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1501))) is different from true [2022-11-02 20:56:18,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-02 20:56:18,991 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1502 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_1502) |c_#memory_$Pointer$.base|)) is different from true [2022-11-02 20:56:19,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:19,164 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:56:19,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 71 [2022-11-02 20:56:19,254 INFO L356 Elim1Store]: treesize reduction 8, result has 89.0 percent of original size [2022-11-02 20:56:19,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 48 treesize of output 102 [2022-11-02 20:57:24,474 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 19 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 6 not checked. [2022-11-02 20:57:24,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:57:25,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:25,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524729784] [2022-11-02 20:57:25,149 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:57:25,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553279475] [2022-11-02 20:57:25,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553279475] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:25,150 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:57:25,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-11-02 20:57:25,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102071615] [2022-11-02 20:57:25,150 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-02 20:57:25,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 20:57:25,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:25,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 20:57:25,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1129, Unknown=17, NotChecked=138, Total=1406 [2022-11-02 20:57:25,152 INFO L87 Difference]: Start difference. First operand 146 states and 150 transitions. Second operand has 32 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 14 states have call successors, (26), 9 states have call predecessors, (26), 12 states have return successors, (25), 15 states have call predecessors, (25), 13 states have call successors, (25) [2022-11-02 20:57:49,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:49,311 INFO L93 Difference]: Finished difference Result 178 states and 184 transitions. [2022-11-02 20:57:49,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 20:57:49,317 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 14 states have call successors, (26), 9 states have call predecessors, (26), 12 states have return successors, (25), 15 states have call predecessors, (25), 13 states have call successors, (25) Word has length 154 [2022-11-02 20:57:49,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:49,319 INFO L225 Difference]: With dead ends: 178 [2022-11-02 20:57:49,319 INFO L226 Difference]: Without dead ends: 166 [2022-11-02 20:57:49,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 139 SyntacticMatches, 18 SemanticMatches, 56 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 90.0s TimeCoverageRelationStatistics Valid=246, Invalid=2795, Unknown=47, NotChecked=218, Total=3306 [2022-11-02 20:57:49,321 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 127 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1097 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:49,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 478 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 321 Invalid, 0 Unknown, 1097 Unchecked, 0.5s Time] [2022-11-02 20:57:49,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-02 20:57:49,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-11-02 20:57:49,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 110 states have (on average 1.0272727272727273) internal successors, (113), 112 states have internal predecessors, (113), 29 states have call successors, (29), 26 states have call predecessors, (29), 26 states have return successors, (29), 27 states have call predecessors, (29), 28 states have call successors, (29) [2022-11-02 20:57:49,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 171 transitions. [2022-11-02 20:57:49,343 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 171 transitions. Word has length 154 [2022-11-02 20:57:49,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:49,343 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 171 transitions. [2022-11-02 20:57:49,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 14 states have call successors, (26), 9 states have call predecessors, (26), 12 states have return successors, (25), 15 states have call predecessors, (25), 13 states have call successors, (25) [2022-11-02 20:57:49,344 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 171 transitions. [2022-11-02 20:57:49,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-02 20:57:49,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:49,346 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:49,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:49,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 20:57:49,572 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:57:49,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:49,572 INFO L85 PathProgramCache]: Analyzing trace with hash 444745877, now seen corresponding path program 1 times [2022-11-02 20:57:49,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:49,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344415564] [2022-11-02 20:57:49,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:49,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:49,645 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:57:49,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [758087022] [2022-11-02 20:57:49,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:49,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:49,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:49,647 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:49,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b0fd3db-2305-4198-9a7d-83cd188aec06/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:57:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:50,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 2675 conjuncts, 142 conjunts are in the unsatisfiable core [2022-11-02 20:57:50,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:50,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:57:50,820 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-02 20:57:50,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-02 20:57:50,887 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2022-11-02 20:57:51,410 INFO L356 Elim1Store]: treesize reduction 173, result has 26.4 percent of original size [2022-11-02 20:57:51,410 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 93 treesize of output 134 [2022-11-02 20:57:51,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2022-11-02 20:57:51,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:51,876 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 20:57:51,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-02 20:57:52,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:57:52,047 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 25 treesize of output 25 [2022-11-02 20:57:53,213 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-02 20:57:53,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-02 20:57:53,537 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1715 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1715))) is different from true [2022-11-02 20:57:53,685 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1716 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_1716) |c_#memory_$Pointer$.base|)) is different from true [2022-11-02 20:57:53,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:53,828 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 20:57:53,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 36 treesize of output 40 [2022-11-02 20:57:53,865 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-02 20:57:53,866 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-02 20:57:55,991 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.base_BEFORE_CALL_63| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.base_BEFORE_CALL_63|) 0))) (and (not (= .cse0 0)) (<= (+ .cse0 2) |v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.base_BEFORE_CALL_63|)))) is different from true [2022-11-02 20:57:56,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 24 [2022-11-02 20:57:58,334 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.base_BEFORE_CALL_64| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.base_BEFORE_CALL_64|) 0))) (and (not (= .cse0 0)) (<= (+ 2 .cse0) |v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.base_BEFORE_CALL_64|)))) is different from true [2022-11-02 20:57:58,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 24 [2022-11-02 20:58:00,608 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.base_BEFORE_CALL_65| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.base_BEFORE_CALL_65|) 0))) (and (<= (+ .cse0 2) |v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.base_BEFORE_CALL_65|) (not (= .cse0 0))))) is different from true [2022-11-02 20:58:02,783 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.base_BEFORE_CALL_66| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.base_BEFORE_CALL_66|) 0))) (and (not (= .cse0 0)) (<= (+ 2 .cse0) |v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.base_BEFORE_CALL_66|)))) is different from true [2022-11-02 20:58:04,945 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.base_BEFORE_CALL_67| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.base_BEFORE_CALL_67|) 0))) (and (<= (+ .cse0 2) |v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.base_BEFORE_CALL_67|) (not (= .cse0 0))))) is different from true [2022-11-02 20:58:12,680 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 34 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 43 not checked. [2022-11-02 20:58:12,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:23,209 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1718 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_1718) |c_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.base|) |c_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.offset|) 0))) is different from false [2022-11-02 20:58:23,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:23,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344415564] [2022-11-02 20:58:23,216 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:58:23,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758087022] [2022-11-02 20:58:23,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758087022] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:23,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:58:23,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2022-11-02 20:58:23,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934668770] [2022-11-02 20:58:23,216 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-02 20:58:23,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-02 20:58:23,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:23,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-02 20:58:23,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1135, Unknown=27, NotChecked=600, Total=1892 [2022-11-02 20:58:23,218 INFO L87 Difference]: Start difference. First operand 166 states and 171 transitions. Second operand has 38 states, 35 states have (on average 3.0) internal successors, (105), 34 states have internal predecessors, (105), 16 states have call successors, (27), 13 states have call predecessors, (27), 15 states have return successors, (26), 17 states have call predecessors, (26), 15 states have call successors, (26)