./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/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_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/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_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/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 ffbf3b1479afd9aaa2ec45fcd2782998a39316f97238379433376f7ba5094eb5 --- 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 20:17:58,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:17:58,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:17:58,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:17:58,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:17:58,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:17:58,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:17:58,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:17:58,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:17:58,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:17:58,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:17:58,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:17:58,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:17:58,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:17:58,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:17:58,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:17:58,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:17:58,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:17:58,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:17:58,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:17:58,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:17:58,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:17:58,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:17:58,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:17:58,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:17:58,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:17:58,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:17:58,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:17:58,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:17:58,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:17:58,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:17:58,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:17:58,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:17:58,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:17:58,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:17:58,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:17:58,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:17:58,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:17:58,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:17:58,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:17:58,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:17:58,706 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:17:58,753 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:17:58,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:17:58,757 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:17:58,757 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:17:58,758 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:17:58,758 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:17:58,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:17:58,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:17:58,759 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:17:58,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:17:58,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:17:58,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:17:58,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:17:58,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:17:58,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:17:58,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:17:58,762 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:17:58,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:17:58,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:17:58,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:17:58,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:17:58,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:17:58,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:17:58,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:17:58,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:17:58,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:17:58,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:17:58,765 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:17:58,765 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:17:58,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:17:58,765 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_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ffbf3b1479afd9aaa2ec45fcd2782998a39316f97238379433376f7ba5094eb5 [2022-11-02 20:17:59,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:17:59,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:17:59,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:17:59,082 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:17:59,083 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:17:59,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i [2022-11-02 20:17:59,151 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/data/db3221608/8a852c9b37f743a2a5afd613d32cee8c/FLAG6ded1b61f [2022-11-02 20:17:59,923 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:17:59,923 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i [2022-11-02 20:17:59,963 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/data/db3221608/8a852c9b37f743a2a5afd613d32cee8c/FLAG6ded1b61f [2022-11-02 20:18:00,173 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/data/db3221608/8a852c9b37f743a2a5afd613d32cee8c [2022-11-02 20:18:00,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:18:00,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:18:00,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:18:00,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:18:00,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:18:00,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:18:00" (1/1) ... [2022-11-02 20:18:00,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@af03422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:00, skipping insertion in model container [2022-11-02 20:18:00,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:18:00" (1/1) ... [2022-11-02 20:18:00,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:18:00,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:18:00,643 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_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i[4501,4514] [2022-11-02 20:18:00,651 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_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i[4561,4574] [2022-11-02 20:18:01,437 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-02 20:18:01,539 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:01,539 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:01,540 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:01,541 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:01,542 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:01,574 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:01,575 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:01,577 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:01,577 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:01,579 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:01,580 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:01,581 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:01,581 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:01,876 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 20:18:01,877 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 20:18:01,879 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 20:18:01,880 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 20:18:01,881 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 20:18:01,882 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 20:18:01,883 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 20:18:01,884 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 20:18:01,885 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 20:18:01,885 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 20:18:02,004 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:02,012 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:02,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:18:02,090 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:18:02,103 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_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i[4501,4514] [2022-11-02 20:18:02,103 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_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i[4561,4574] [2022-11-02 20:18:02,133 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-02 20:18:02,148 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:02,149 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:02,149 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:02,150 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:02,151 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:02,157 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:02,158 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:02,159 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:02,159 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:02,161 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:02,161 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:02,162 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:02,162 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:02,224 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 20:18:02,227 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 20:18:02,227 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 20:18:02,236 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 20:18:02,237 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 20:18:02,237 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 20:18:02,238 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 20:18:02,238 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 20:18:02,239 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 20:18:02,239 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 20:18:02,305 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:02,336 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:18:02,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:18:02,665 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:18:02,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:02 WrapperNode [2022-11-02 20:18:02,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:18:02,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:18:02,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:18:02,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:18:02,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:02" (1/1) ... [2022-11-02 20:18:02,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:02" (1/1) ... [2022-11-02 20:18:02,847 INFO L138 Inliner]: procedures = 690, calls = 1561, calls flagged for inlining = 47, calls inlined = 6, statements flattened = 595 [2022-11-02 20:18:02,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:18:02,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:18:02,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:18:02,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:18:02,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:02" (1/1) ... [2022-11-02 20:18:02,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:02" (1/1) ... [2022-11-02 20:18:02,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:02" (1/1) ... [2022-11-02 20:18:02,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:02" (1/1) ... [2022-11-02 20:18:02,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:02" (1/1) ... [2022-11-02 20:18:02,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:02" (1/1) ... [2022-11-02 20:18:02,968 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:02" (1/1) ... [2022-11-02 20:18:02,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:02" (1/1) ... [2022-11-02 20:18:02,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:18:02,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:18:02,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:18:02,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:18:03,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:02" (1/1) ... [2022-11-02 20:18:03,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:18:03,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:18:03,047 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:18:03,096 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-02 20:18:03,097 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-02 20:18:03,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:18:03,098 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-02 20:18:03,098 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-02 20:18:03,099 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-02 20:18:03,099 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-02 20:18:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-11-02 20:18:03,100 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-11-02 20:18:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:18:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-02 20:18:03,101 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-02 20:18:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 20:18:03,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 20:18:03,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:18:03,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:18:03,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:18:03,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:18:03,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:18:03,103 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-02 20:18:03,103 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-02 20:18:03,104 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-02 20:18:03,105 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-02 20:18:03,105 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-02 20:18:03,105 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-02 20:18:03,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-02 20:18:03,105 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-02 20:18:03,105 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 20:18:03,106 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 20:18:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-11-02 20:18:03,106 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-11-02 20:18:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:18:03,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:18:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:18:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:18:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-02 20:18:03,113 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-02 20:18:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-02 20:18:03,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-02 20:18:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:18:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:18:03,477 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:18:03,480 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:18:04,589 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:18:04,602 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:18:04,603 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 20:18:04,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:18:04 BoogieIcfgContainer [2022-11-02 20:18:04,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:18:04,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:18:04,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:18:04,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:18:04,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:18:00" (1/3) ... [2022-11-02 20:18:04,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c2023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:18:04, skipping insertion in model container [2022-11-02 20:18:04,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:18:02" (2/3) ... [2022-11-02 20:18:04,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c2023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:18:04, skipping insertion in model container [2022-11-02 20:18:04,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:18:04" (3/3) ... [2022-11-02 20:18:04,615 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_init_dynamic_harness.i [2022-11-02 20:18:04,639 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:18:04,639 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:18:04,713 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:18:04,725 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;@6d2f3900, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:18:04,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:18:04,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 89 states have internal predecessors, (108), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-02 20:18:04,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-02 20:18:04,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:04,748 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:18:04,751 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:04,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:04,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1457384713, now seen corresponding path program 1 times [2022-11-02 20:18:04,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:04,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709183793] [2022-11-02 20:18:04,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:04,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:05,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:05,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709183793] [2022-11-02 20:18:05,321 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-02 20:18:05,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044606585] [2022-11-02 20:18:05,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:05,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:05,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:18:05,324 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:18:05,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:18:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:05,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 1973 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-02 20:18:05,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 20:18:06,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:18:06,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044606585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:06,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:18:06,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:18:06,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108402959] [2022-11-02 20:18:06,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:06,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:18:06,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:06,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:18:06,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:18:06,065 INFO L87 Difference]: Start difference. First operand has 137 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 89 states have internal predecessors, (108), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 20:18:06,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:06,134 INFO L93 Difference]: Finished difference Result 269 states and 367 transitions. [2022-11-02 20:18:06,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:18:06,139 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2022-11-02 20:18:06,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:06,152 INFO L225 Difference]: With dead ends: 269 [2022-11-02 20:18:06,153 INFO L226 Difference]: Without dead ends: 130 [2022-11-02 20:18:06,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 53 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 20:18:06,169 INFO L413 NwaCegarLoop]: 171 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, 171 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 20:18:06,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:18:06,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-02 20:18:06,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-11-02 20:18:06,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 83 states have internal predecessors, (97), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-02 20:18:06,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 163 transitions. [2022-11-02 20:18:06,243 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 163 transitions. Word has length 54 [2022-11-02 20:18:06,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:06,244 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 163 transitions. [2022-11-02 20:18:06,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 20:18:06,245 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 163 transitions. [2022-11-02 20:18:06,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-02 20:18:06,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:06,250 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:18:06,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:06,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:06,473 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:06,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:06,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1798443805, now seen corresponding path program 1 times [2022-11-02 20:18:06,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:06,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804386117] [2022-11-02 20:18:06,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:06,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:06,630 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:18:06,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897749068] [2022-11-02 20:18:06,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:06,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:06,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:18:06,633 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:18:06,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:18:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:07,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 2001 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:18:07,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:07,293 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 20:18:07,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:18:07,472 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 20:18:07,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:07,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804386117] [2022-11-02 20:18:07,472 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:18:07,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897749068] [2022-11-02 20:18:07,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897749068] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:18:07,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:18:07,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2022-11-02 20:18:07,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866759250] [2022-11-02 20:18:07,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:07,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:18:07,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:07,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:18:07,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:18:07,476 INFO L87 Difference]: Start difference. First operand 130 states and 163 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-02 20:18:07,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:07,550 INFO L93 Difference]: Finished difference Result 138 states and 171 transitions. [2022-11-02 20:18:07,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:18:07,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 60 [2022-11-02 20:18:07,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:07,553 INFO L225 Difference]: With dead ends: 138 [2022-11-02 20:18:07,553 INFO L226 Difference]: Without dead ends: 136 [2022-11-02 20:18:07,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:18:07,555 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 6 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:07,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 627 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:18:07,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-02 20:18:07,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2022-11-02 20:18:07,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 87 states have internal predecessors, (100), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-02 20:18:07,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 168 transitions. [2022-11-02 20:18:07,569 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 168 transitions. Word has length 60 [2022-11-02 20:18:07,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:07,570 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 168 transitions. [2022-11-02 20:18:07,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-02 20:18:07,570 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 168 transitions. [2022-11-02 20:18:07,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-02 20:18:07,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:07,572 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:18:07,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:07,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-02 20:18:07,797 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:07,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:07,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1800290847, now seen corresponding path program 1 times [2022-11-02 20:18:07,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:07,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386294036] [2022-11-02 20:18:07,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:07,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:07,896 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:18:07,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558426549] [2022-11-02 20:18:07,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:07,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:07,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:18:07,898 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:18:07,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:18:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:08,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 2006 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:18:08,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:08,560 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 20:18:08,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:18:08,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:08,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386294036] [2022-11-02 20:18:08,561 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:18:08,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558426549] [2022-11-02 20:18:08,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558426549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:08,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:18:08,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:18:08,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076992527] [2022-11-02 20:18:08,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:08,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:18:08,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:08,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:18:08,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:18:08,565 INFO L87 Difference]: Start difference. First operand 135 states and 168 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-02 20:18:08,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:08,594 INFO L93 Difference]: Finished difference Result 258 states and 318 transitions. [2022-11-02 20:18:08,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:18:08,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 60 [2022-11-02 20:18:08,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:08,597 INFO L225 Difference]: With dead ends: 258 [2022-11-02 20:18:08,598 INFO L226 Difference]: Without dead ends: 136 [2022-11-02 20:18:08,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:18:08,599 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 2 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:08,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 481 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:18:08,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-02 20:18:08,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2022-11-02 20:18:08,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 85 states have (on average 1.188235294117647) internal successors, (101), 88 states have internal predecessors, (101), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-02 20:18:08,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 169 transitions. [2022-11-02 20:18:08,611 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 169 transitions. Word has length 60 [2022-11-02 20:18:08,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:08,612 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 169 transitions. [2022-11-02 20:18:08,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-02 20:18:08,612 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 169 transitions. [2022-11-02 20:18:08,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-02 20:18:08,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:08,614 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:18:08,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:08,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:08,833 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:08,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:08,834 INFO L85 PathProgramCache]: Analyzing trace with hash 169080727, now seen corresponding path program 1 times [2022-11-02 20:18:08,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:08,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108745785] [2022-11-02 20:18:08,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:08,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:08,926 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:18:08,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1659759943] [2022-11-02 20:18:08,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:08,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:08,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:18:08,928 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:18:08,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:18:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:09,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 2025 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:18:09,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:09,448 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 20:18:09,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:18:09,558 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 20:18:09,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:09,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108745785] [2022-11-02 20:18:09,559 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:18:09,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659759943] [2022-11-02 20:18:09,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659759943] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:18:09,559 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:18:09,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 20:18:09,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747947812] [2022-11-02 20:18:09,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:18:09,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:18:09,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:09,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:18:09,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:18:09,561 INFO L87 Difference]: Start difference. First operand 136 states and 169 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:18:09,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:09,654 INFO L93 Difference]: Finished difference Result 263 states and 325 transitions. [2022-11-02 20:18:09,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:18:09,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2022-11-02 20:18:09,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:09,657 INFO L225 Difference]: With dead ends: 263 [2022-11-02 20:18:09,657 INFO L226 Difference]: Without dead ends: 139 [2022-11-02 20:18:09,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:18:09,670 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 7 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:09,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 960 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:18:09,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-02 20:18:09,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-11-02 20:18:09,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 88 states have (on average 1.1818181818181819) internal successors, (104), 91 states have internal predecessors, (104), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-02 20:18:09,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 172 transitions. [2022-11-02 20:18:09,691 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 172 transitions. Word has length 61 [2022-11-02 20:18:09,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:09,693 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 172 transitions. [2022-11-02 20:18:09,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:18:09,694 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 172 transitions. [2022-11-02 20:18:09,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 20:18:09,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:09,697 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:18:09,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:09,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:09,915 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:09,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:09,916 INFO L85 PathProgramCache]: Analyzing trace with hash -909385697, now seen corresponding path program 2 times [2022-11-02 20:18:09,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:09,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842787369] [2022-11-02 20:18:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:09,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:10,033 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:18:10,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936812583] [2022-11-02 20:18:10,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:18:10,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:10,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:18:10,035 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:18:10,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:18:11,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:18:11,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:18:11,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 2082 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:18:11,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:11,679 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 20:18:11,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:18:12,046 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 20:18:12,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:12,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842787369] [2022-11-02 20:18:12,047 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:18:12,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936812583] [2022-11-02 20:18:12,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936812583] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:18:12,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:18:12,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 20:18:12,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029749620] [2022-11-02 20:18:12,047 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:18:12,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:18:12,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:12,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:18:12,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:18:12,049 INFO L87 Difference]: Start difference. First operand 139 states and 172 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:18:13,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:13,790 INFO L93 Difference]: Finished difference Result 269 states and 334 transitions. [2022-11-02 20:18:13,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:18:13,791 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 64 [2022-11-02 20:18:13,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:13,792 INFO L225 Difference]: With dead ends: 269 [2022-11-02 20:18:13,793 INFO L226 Difference]: Without dead ends: 145 [2022-11-02 20:18:13,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=146, Invalid=234, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:18:13,794 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 26 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:13,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1269 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:18:13,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-02 20:18:13,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-11-02 20:18:13,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 94 states have (on average 1.1702127659574468) internal successors, (110), 97 states have internal predecessors, (110), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-02 20:18:13,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 178 transitions. [2022-11-02 20:18:13,807 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 178 transitions. Word has length 64 [2022-11-02 20:18:13,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:13,807 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 178 transitions. [2022-11-02 20:18:13,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:18:13,808 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 178 transitions. [2022-11-02 20:18:13,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-02 20:18:13,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:13,809 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:18:13,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:14,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:14,025 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:14,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:14,026 INFO L85 PathProgramCache]: Analyzing trace with hash -555602657, now seen corresponding path program 3 times [2022-11-02 20:18:14,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:14,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501596671] [2022-11-02 20:18:14,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:14,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:14,145 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:18:14,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40028794] [2022-11-02 20:18:14,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:18:14,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:14,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:18:14,147 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:18:14,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:18:22,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-02 20:18:22,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:18:22,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 2196 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 20:18:22,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:22,537 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 20:18:22,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:18:23,232 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 20:18:23,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:23,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501596671] [2022-11-02 20:18:23,232 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:18:23,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40028794] [2022-11-02 20:18:23,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40028794] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:18:23,232 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:18:23,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-02 20:18:23,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173261255] [2022-11-02 20:18:23,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:18:23,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 20:18:23,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:23,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 20:18:23,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:18:23,234 INFO L87 Difference]: Start difference. First operand 145 states and 178 transitions. Second operand has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:18:31,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:31,591 INFO L93 Difference]: Finished difference Result 281 states and 352 transitions. [2022-11-02 20:18:31,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-02 20:18:31,592 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 70 [2022-11-02 20:18:31,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:31,594 INFO L225 Difference]: With dead ends: 281 [2022-11-02 20:18:31,594 INFO L226 Difference]: Without dead ends: 157 [2022-11-02 20:18:31,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=479, Invalid=853, Unknown=0, NotChecked=0, Total=1332 [2022-11-02 20:18:31,596 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 87 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:31,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 2877 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:18:31,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-02 20:18:31,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2022-11-02 20:18:31,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 106 states have (on average 1.150943396226415) internal successors, (122), 109 states have internal predecessors, (122), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-02 20:18:31,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 190 transitions. [2022-11-02 20:18:31,612 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 190 transitions. Word has length 70 [2022-11-02 20:18:31,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:31,612 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 190 transitions. [2022-11-02 20:18:31,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 20:18:31,613 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 190 transitions. [2022-11-02 20:18:31,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-02 20:18:31,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:31,614 INFO L195 NwaCegarLoop]: trace histogram [22, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:18:31,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-02 20:18:31,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:31,829 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:31,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:31,829 INFO L85 PathProgramCache]: Analyzing trace with hash 408258335, now seen corresponding path program 4 times [2022-11-02 20:18:31,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:31,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339739503] [2022-11-02 20:18:31,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:31,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:31,970 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:18:31,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106018495] [2022-11-02 20:18:31,971 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:18:31,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:31,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:18:31,973 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:18:31,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:18:32,832 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:18:32,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:18:32,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 2424 conjuncts, 112 conjunts are in the unsatisfiable core [2022-11-02 20:18:32,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:32,885 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 20:18:33,426 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 13 treesize of output 9 [2022-11-02 20:18:33,486 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-02 20:18:33,486 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2022-11-02 20:18:33,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-02 20:18:33,590 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-02 20:18:33,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-02 20:18:33,691 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-02 20:18:33,767 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-02 20:18:33,768 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2022-11-02 20:18:33,832 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-02 20:18:33,899 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-02 20:18:33,899 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2022-11-02 20:18:33,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-02 20:18:34,026 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-02 20:18:34,026 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2022-11-02 20:18:34,099 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-02 20:18:34,099 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2022-11-02 20:18:34,174 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-02 20:18:34,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2022-11-02 20:18:34,233 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-02 20:18:34,395 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:18:34,395 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 11 treesize of output 11 [2022-11-02 20:18:34,511 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1028 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1028) |c_#memory_int|)) is different from true [2022-11-02 20:18:34,526 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 16 treesize of output 18 [2022-11-02 20:18:34,588 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 33 treesize of output 21 [2022-11-02 20:18:34,614 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 20:18:34,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:18:34,758 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1034 (Array Int Int))) (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_array_list_init_dynamic_~#allocation_size~0#1.base| v_ArrVal_1034) |c_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.base|) (+ |c_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.offset| 8)) 18446744073709551616) 0)) is different from false [2022-11-02 20:18:34,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:34,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339739503] [2022-11-02 20:18:34,761 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:18:34,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106018495] [2022-11-02 20:18:34,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106018495] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:18:34,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:18:34,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2022-11-02 20:18:34,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820644653] [2022-11-02 20:18:34,762 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-02 20:18:34,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-02 20:18:34,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:34,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-02 20:18:34,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1079, Unknown=2, NotChecked=134, Total=1332 [2022-11-02 20:18:34,763 INFO L87 Difference]: Start difference. First operand 157 states and 190 transitions. Second operand has 35 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 34 states have internal predecessors, (51), 5 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-02 20:18:35,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:35,719 INFO L93 Difference]: Finished difference Result 289 states and 372 transitions. [2022-11-02 20:18:35,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-02 20:18:35,719 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 34 states have internal predecessors, (51), 5 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 82 [2022-11-02 20:18:35,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:35,722 INFO L225 Difference]: With dead ends: 289 [2022-11-02 20:18:35,722 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:18:35,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 44 SyntacticMatches, 12 SemanticMatches, 40 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=147, Invalid=1419, Unknown=2, NotChecked=154, Total=1722 [2022-11-02 20:18:35,724 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 94 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 683 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:35,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 720 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 724 Invalid, 0 Unknown, 683 Unchecked, 0.7s Time] [2022-11-02 20:18:35,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:18:35,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 176. [2022-11-02 20:18:35,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 121 states have (on average 1.1570247933884297) internal successors, (140), 124 states have internal predecessors, (140), 36 states have call successors, (36), 17 states have call predecessors, (36), 18 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2022-11-02 20:18:35,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 211 transitions. [2022-11-02 20:18:35,747 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 211 transitions. Word has length 82 [2022-11-02 20:18:35,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:35,748 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 211 transitions. [2022-11-02 20:18:35,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 34 states have internal predecessors, (51), 5 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-02 20:18:35,748 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 211 transitions. [2022-11-02 20:18:35,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-02 20:18:35,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:35,750 INFO L195 NwaCegarLoop]: trace histogram [23, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:18:35,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:35,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:35,976 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:18:35,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:35,976 INFO L85 PathProgramCache]: Analyzing trace with hash -34254185, now seen corresponding path program 5 times [2022-11-02 20:18:35,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:18:35,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320191721] [2022-11-02 20:18:35,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:35,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:18:36,124 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:18:36,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1652206579] [2022-11-02 20:18:36,125 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:18:36,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:18:36,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:18:36,126 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:18:36,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2039aa-ef10-4e99-bb23-4c16abb0cb81/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process