./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.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_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/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_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/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_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/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 b875da017a84450a4103e052cdea13d2bfe14ebd5ef6946815ef19c566574bb1 --- 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 20:38:23,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:38:23,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:38:23,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:38:23,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:38:23,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:38:23,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:38:23,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:38:23,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:38:23,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:38:23,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:38:23,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:38:23,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:38:23,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:38:23,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:38:23,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:38:23,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:38:23,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:38:23,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:38:23,815 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:38:23,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:38:23,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:38:23,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:38:23,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:38:23,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:38:23,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:38:23,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:38:23,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:38:23,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:38:23,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:38:23,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:38:23,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:38:23,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:38:23,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:38:23,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:38:23,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:38:23,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:38:23,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:38:23,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:38:23,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:38:23,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:38:23,837 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:38:23,872 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:38:23,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:38:23,873 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:38:23,873 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:38:23,874 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:38:23,874 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:38:23,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:38:23,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:38:23,875 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:38:23,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:38:23,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:38:23,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:38:23,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:38:23,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:38:23,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:38:23,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:38:23,878 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:38:23,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:38:23,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:38:23,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:38:23,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:38:23,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:38:23,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:38:23,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:38:23,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:38:23,880 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:38:23,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:38:23,880 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:38:23,880 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:38:23,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:38:23,881 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_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b875da017a84450a4103e052cdea13d2bfe14ebd5ef6946815ef19c566574bb1 [2022-11-02 20:38:24,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:38:24,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:38:24,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:38:24,226 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:38:24,227 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:38:24,228 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i [2022-11-02 20:38:24,312 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/data/6311bed7c/eb7ccbbcfd70475fbfba1c56a4a15521/FLAG3d9981c02 [2022-11-02 20:38:25,401 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:38:25,401 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i [2022-11-02 20:38:25,441 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/data/6311bed7c/eb7ccbbcfd70475fbfba1c56a4a15521/FLAG3d9981c02 [2022-11-02 20:38:25,803 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/data/6311bed7c/eb7ccbbcfd70475fbfba1c56a4a15521 [2022-11-02 20:38:25,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:38:25,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:38:25,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:38:25,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:38:25,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:38:25,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:38:25" (1/1) ... [2022-11-02 20:38:25,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f415ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:25, skipping insertion in model container [2022-11-02 20:38:25,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:38:25" (1/1) ... [2022-11-02 20:38:25,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:38:25,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:38:26,353 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_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i[4493,4506] [2022-11-02 20:38:26,363 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_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i[4553,4566] [2022-11-02 20:38:28,042 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:28,043 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:28,043 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:28,044 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:28,045 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:28,072 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:28,073 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:28,075 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:28,075 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:28,082 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:28,084 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:28,086 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:28,087 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:28,757 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 20:38:28,758 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 20:38:28,760 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 20:38:28,761 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 20:38:28,762 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 20:38:28,763 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 20:38:28,764 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 20:38:28,765 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 20:38:28,765 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 20:38:28,766 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 20:38:29,024 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-02 20:38:29,493 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,496 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,533 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,542 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,551 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,553 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,583 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,585 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,586 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,588 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,588 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,589 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,589 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:38:29,704 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:38:29,738 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_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i[4493,4506] [2022-11-02 20:38:29,739 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_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i[4553,4566] [2022-11-02 20:38:29,788 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,788 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,789 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,789 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,790 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,797 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,798 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,799 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,799 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,800 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,801 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,801 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,802 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:29,868 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 20:38:29,869 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 20:38:29,870 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 20:38:29,874 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 20:38:29,875 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 20:38:29,876 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 20:38:29,876 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 20:38:29,877 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 20:38:29,877 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 20:38:29,878 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 20:38:29,915 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-02 20:38:30,054 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:30,055 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:30,066 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:30,067 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:30,070 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:30,070 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:30,087 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:30,088 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:30,089 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:30,089 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:30,090 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:30,090 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:30,092 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:38:30,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:38:30,454 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:38:30,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30 WrapperNode [2022-11-02 20:38:30,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:38:30,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:38:30,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:38:30,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:38:30,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30" (1/1) ... [2022-11-02 20:38:30,635 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30" (1/1) ... [2022-11-02 20:38:30,709 INFO L138 Inliner]: procedures = 774, calls = 2446, calls flagged for inlining = 67, calls inlined = 11, statements flattened = 624 [2022-11-02 20:38:30,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:38:30,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:38:30,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:38:30,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:38:30,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30" (1/1) ... [2022-11-02 20:38:30,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30" (1/1) ... [2022-11-02 20:38:30,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30" (1/1) ... [2022-11-02 20:38:30,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30" (1/1) ... [2022-11-02 20:38:30,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30" (1/1) ... [2022-11-02 20:38:30,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30" (1/1) ... [2022-11-02 20:38:30,784 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30" (1/1) ... [2022-11-02 20:38:30,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30" (1/1) ... [2022-11-02 20:38:30,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:38:30,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:38:30,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:38:30,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:38:30,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30" (1/1) ... [2022-11-02 20:38:30,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:38:30,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:30,843 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:38:30,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:38:30,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-02 20:38:30,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:38:30,906 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-02 20:38:30,906 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-02 20:38:30,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 20:38:30,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 20:38:30,908 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-11-02 20:38:30,909 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-11-02 20:38:30,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:38:30,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:38:30,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:38:30,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:38:30,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:38:30,910 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-02 20:38:30,910 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-02 20:38:30,911 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-02 20:38:30,911 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-02 20:38:30,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-02 20:38:30,911 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-02 20:38:30,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:38:30,912 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-02 20:38:30,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-02 20:38:30,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:38:30,912 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-02 20:38:30,912 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-02 20:38:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:38:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-11-02 20:38:30,914 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-11-02 20:38:30,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:38:30,914 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_begin [2022-11-02 20:38:30,914 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_begin [2022-11-02 20:38:30,914 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-11-02 20:38:30,915 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-11-02 20:38:30,915 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2022-11-02 20:38:30,915 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2022-11-02 20:38:30,916 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 20:38:30,916 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 20:38:30,916 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2022-11-02 20:38:30,916 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2022-11-02 20:38:30,916 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-11-02 20:38:30,917 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-11-02 20:38:30,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:38:30,919 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-02 20:38:30,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-02 20:38:30,924 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-02 20:38:30,924 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-02 20:38:30,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:38:31,473 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:38:31,476 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:38:31,607 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !true; [2022-11-02 20:38:32,772 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:38:32,785 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:38:32,790 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-02 20:38:32,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:38:32 BoogieIcfgContainer [2022-11-02 20:38:32,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:38:32,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:38:32,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:38:32,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:38:32,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:38:25" (1/3) ... [2022-11-02 20:38:32,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7257dbf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:38:32, skipping insertion in model container [2022-11-02 20:38:32,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30" (2/3) ... [2022-11-02 20:38:32,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7257dbf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:38:32, skipping insertion in model container [2022-11-02 20:38:32,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:38:32" (3/3) ... [2022-11-02 20:38:32,811 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_begin_harness-1.i [2022-11-02 20:38:32,837 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:38:32,837 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:38:32,941 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:38:32,955 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;@1f0c0165, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:38:32,956 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:38:32,962 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 114 states have (on average 1.2456140350877194) internal successors, (142), 113 states have internal predecessors, (142), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-02 20:38:32,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-02 20:38:32,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:32,991 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:32,992 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:32,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:32,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1612502020, now seen corresponding path program 1 times [2022-11-02 20:38:33,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:33,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093664835] [2022-11-02 20:38:33,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:33,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:33,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:33,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093664835] [2022-11-02 20:38:33,621 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-02 20:38:33,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294597434] [2022-11-02 20:38:33,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:33,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:33,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:33,624 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:33,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:38:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:34,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 2556 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-02 20:38:34,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:34,601 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-11-02 20:38:34,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:38:34,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294597434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:34,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:34,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:38:34,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229434723] [2022-11-02 20:38:34,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:34,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:38:34,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:34,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:38:34,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:38:34,664 INFO L87 Difference]: Start difference. First operand has 171 states, 114 states have (on average 1.2456140350877194) internal successors, (142), 113 states have internal predecessors, (142), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-02 20:38:34,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:34,754 INFO L93 Difference]: Finished difference Result 333 states and 453 transitions. [2022-11-02 20:38:34,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:38:34,758 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 148 [2022-11-02 20:38:34,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:34,777 INFO L225 Difference]: With dead ends: 333 [2022-11-02 20:38:34,779 INFO L226 Difference]: Without dead ends: 164 [2022-11-02 20:38:34,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 147 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 20:38:34,797 INFO L413 NwaCegarLoop]: 215 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, 215 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 20:38:34,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:38:34,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-02 20:38:34,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-11-02 20:38:34,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 107 states have internal predecessors, (130), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-02 20:38:34,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 209 transitions. [2022-11-02 20:38:34,862 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 209 transitions. Word has length 148 [2022-11-02 20:38:34,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:34,863 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 209 transitions. [2022-11-02 20:38:34,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-02 20:38:34,863 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 209 transitions. [2022-11-02 20:38:34,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-02 20:38:34,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:34,868 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:34,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 20:38:35,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-02 20:38:35,089 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:35,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:35,089 INFO L85 PathProgramCache]: Analyzing trace with hash 818348810, now seen corresponding path program 1 times [2022-11-02 20:38:35,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:35,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441490027] [2022-11-02 20:38:35,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:35,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:35,215 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:38:35,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [298506031] [2022-11-02 20:38:35,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:35,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:35,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:35,217 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:35,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:38:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:35,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 2584 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:38:35,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:36,346 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-02 20:38:36,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:38:36,761 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-02 20:38:36,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:36,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441490027] [2022-11-02 20:38:36,762 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:38:36,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298506031] [2022-11-02 20:38:36,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298506031] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:36,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:38:36,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2022-11-02 20:38:36,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382667530] [2022-11-02 20:38:36,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:36,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:38:36,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:36,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:38:36,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:38:36,767 INFO L87 Difference]: Start difference. First operand 164 states and 209 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2022-11-02 20:38:37,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:37,346 INFO L93 Difference]: Finished difference Result 230 states and 298 transitions. [2022-11-02 20:38:37,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:38:37,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 154 [2022-11-02 20:38:37,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:37,353 INFO L225 Difference]: With dead ends: 230 [2022-11-02 20:38:37,353 INFO L226 Difference]: Without dead ends: 166 [2022-11-02 20:38:37,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 294 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:38:37,356 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 212 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:37,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 961 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:38:37,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-02 20:38:37,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-11-02 20:38:37,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 107 states have (on average 1.2242990654205608) internal successors, (131), 109 states have internal predecessors, (131), 40 states have call successors, (40), 17 states have call predecessors, (40), 18 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-11-02 20:38:37,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 211 transitions. [2022-11-02 20:38:37,387 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 211 transitions. Word has length 154 [2022-11-02 20:38:37,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:37,388 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 211 transitions. [2022-11-02 20:38:37,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2022-11-02 20:38:37,389 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 211 transitions. [2022-11-02 20:38:37,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:38:37,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:37,393 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:37,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:37,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:37,617 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:37,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:37,617 INFO L85 PathProgramCache]: Analyzing trace with hash -226987588, now seen corresponding path program 1 times [2022-11-02 20:38:37,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:37,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436131536] [2022-11-02 20:38:37,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:37,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:37,769 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:38:37,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1707472019] [2022-11-02 20:38:37,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:37,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:37,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:37,771 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:37,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:38:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:38,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 2589 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:38:38,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:38,621 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-11-02 20:38:38,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:38:38,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:38,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436131536] [2022-11-02 20:38:38,622 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:38:38,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707472019] [2022-11-02 20:38:38,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707472019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:38,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:38,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:38:38,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037033863] [2022-11-02 20:38:38,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:38,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:38:38,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:38,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:38:38,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:38:38,627 INFO L87 Difference]: Start difference. First operand 166 states and 211 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-02 20:38:38,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:38,708 INFO L93 Difference]: Finished difference Result 325 states and 414 transitions. [2022-11-02 20:38:38,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:38:38,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 155 [2022-11-02 20:38:38,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:38,720 INFO L225 Difference]: With dead ends: 325 [2022-11-02 20:38:38,721 INFO L226 Difference]: Without dead ends: 171 [2022-11-02 20:38:38,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:38:38,727 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 2 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:38,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 819 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:38:38,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-02 20:38:38,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-11-02 20:38:38,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 111 states have (on average 1.2162162162162162) internal successors, (135), 113 states have internal predecessors, (135), 40 states have call successors, (40), 17 states have call predecessors, (40), 19 states have return successors, (41), 40 states have call predecessors, (41), 39 states have call successors, (41) [2022-11-02 20:38:38,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 216 transitions. [2022-11-02 20:38:38,772 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 216 transitions. Word has length 155 [2022-11-02 20:38:38,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:38,775 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 216 transitions. [2022-11-02 20:38:38,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-02 20:38:38,776 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 216 transitions. [2022-11-02 20:38:38,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-02 20:38:38,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:38,784 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:38,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:39,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:39,001 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:39,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:39,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1170775228, now seen corresponding path program 1 times [2022-11-02 20:38:39,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:39,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95064126] [2022-11-02 20:38:39,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:39,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:41,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:38:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:41,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:38:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:41,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:38:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:41,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:38:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:41,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:38:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:41,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:38:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:41,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:38:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:41,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:38:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:41,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:38:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:41,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:38:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:41,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:38:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:41,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:38:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:41,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-02 20:38:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:41,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 20:38:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:42,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:38:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:42,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:38:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:42,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:38:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:42,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-02 20:38:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:42,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 20:38:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:42,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-02 20:38:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:42,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-02 20:38:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:42,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-02 20:38:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:42,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-02 20:38:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:42,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-02 20:38:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:42,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-02 20:38:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:42,218 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-02 20:38:42,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:42,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95064126] [2022-11-02 20:38:42,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95064126] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:42,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568667183] [2022-11-02 20:38:42,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:42,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:42,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:42,228 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:42,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:38:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:43,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 2597 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-02 20:38:43,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:43,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:38:43,738 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-02 20:38:43,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:38:43,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568667183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:43,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:38:43,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 22 [2022-11-02 20:38:43,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404139875] [2022-11-02 20:38:43,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:43,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:38:43,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:43,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:38:43,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:38:43,743 INFO L87 Difference]: Start difference. First operand 171 states and 216 transitions. Second operand has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 9 states have internal predecessors, (87), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-02 20:38:43,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:43,854 INFO L93 Difference]: Finished difference Result 330 states and 416 transitions. [2022-11-02 20:38:43,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:38:43,855 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 9 states have internal predecessors, (87), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 167 [2022-11-02 20:38:43,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:43,857 INFO L225 Difference]: With dead ends: 330 [2022-11-02 20:38:43,857 INFO L226 Difference]: Without dead ends: 180 [2022-11-02 20:38:43,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2022-11-02 20:38:43,860 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 17 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:43,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1166 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 69 Unchecked, 0.1s Time] [2022-11-02 20:38:43,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-11-02 20:38:43,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2022-11-02 20:38:43,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 119 states have (on average 1.218487394957983) internal successors, (145), 121 states have internal predecessors, (145), 40 states have call successors, (40), 18 states have call predecessors, (40), 20 states have return successors, (42), 40 states have call predecessors, (42), 39 states have call successors, (42) [2022-11-02 20:38:43,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 227 transitions. [2022-11-02 20:38:43,898 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 227 transitions. Word has length 167 [2022-11-02 20:38:43,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:43,899 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 227 transitions. [2022-11-02 20:38:43,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 9 states have internal predecessors, (87), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-02 20:38:43,899 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 227 transitions. [2022-11-02 20:38:43,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-02 20:38:43,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:43,903 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:38:43,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:44,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:44,116 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:44,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:44,117 INFO L85 PathProgramCache]: Analyzing trace with hash -695933446, now seen corresponding path program 1 times [2022-11-02 20:38:44,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:44,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142670922] [2022-11-02 20:38:44,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:44,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:44,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:38:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:44,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:38:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:44,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:38:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:44,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:38:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:44,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:38:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:44,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:38:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:44,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:38:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:44,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:38:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:44,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:38:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:44,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:38:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:44,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:38:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:44,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:38:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:45,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-02 20:38:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:45,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 20:38:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:45,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:38:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:45,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:38:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:45,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:38:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:45,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-02 20:38:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:45,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 20:38:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:45,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-02 20:38:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:45,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-02 20:38:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:45,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-02 20:38:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:45,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-02 20:38:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:45,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-02 20:38:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:45,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-02 20:38:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:45,373 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-02 20:38:45,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:45,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142670922] [2022-11-02 20:38:45,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142670922] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:45,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392903219] [2022-11-02 20:38:45,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:45,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:45,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:45,376 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:45,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:38:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:46,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 2592 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:38:46,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-02 20:38:46,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:38:46,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392903219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:46,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:38:46,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-11-02 20:38:46,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733763146] [2022-11-02 20:38:46,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:46,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:38:46,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:46,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:38:46,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:38:46,313 INFO L87 Difference]: Start difference. First operand 180 states and 227 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-02 20:38:46,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:46,607 INFO L93 Difference]: Finished difference Result 334 states and 425 transitions. [2022-11-02 20:38:46,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:38:46,608 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 167 [2022-11-02 20:38:46,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:46,614 INFO L225 Difference]: With dead ends: 334 [2022-11-02 20:38:46,614 INFO L226 Difference]: Without dead ends: 182 [2022-11-02 20:38:46,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:38:46,616 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 214 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:46,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 690 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:38:46,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-02 20:38:46,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-11-02 20:38:46,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 120 states have (on average 1.2083333333333333) internal successors, (145), 122 states have internal predecessors, (145), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (45), 41 states have call predecessors, (45), 40 states have call successors, (45) [2022-11-02 20:38:46,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 231 transitions. [2022-11-02 20:38:46,651 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 231 transitions. Word has length 167 [2022-11-02 20:38:46,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:46,652 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 231 transitions. [2022-11-02 20:38:46,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-02 20:38:46,653 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 231 transitions. [2022-11-02 20:38:46,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-02 20:38:46,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:46,656 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:38:46,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:46,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:46,884 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:46,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:46,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1022744148, now seen corresponding path program 1 times [2022-11-02 20:38:46,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:46,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485241532] [2022-11-02 20:38:46,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:46,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:47,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:38:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:47,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:38:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:47,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:38:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:38:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:38:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:38:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:38:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:38:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:38:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:38:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:38:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:38:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:38:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 20:38:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-02 20:38:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:38:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:38:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:38:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 20:38:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-02 20:38:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-02 20:38:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 20:38:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-02 20:38:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-02 20:38:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-02 20:38:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-02 20:38:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:48,660 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-02 20:38:48,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:48,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485241532] [2022-11-02 20:38:48,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485241532] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:48,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546410934] [2022-11-02 20:38:48,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:48,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:48,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:48,663 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:48,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:38:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:49,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 2621 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-02 20:38:49,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:50,981 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= 0 (select (select |c_#memory_$Pointer$.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset)))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true [2022-11-02 20:39:01,928 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-02 20:39:01,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:01,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546410934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:01,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:39:01,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-11-02 20:39:01,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648436160] [2022-11-02 20:39:01,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:01,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:39:01,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:01,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:39:01,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=202, Unknown=3, NotChecked=28, Total=272 [2022-11-02 20:39:01,932 INFO L87 Difference]: Start difference. First operand 182 states and 231 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-02 20:39:02,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:02,348 INFO L93 Difference]: Finished difference Result 341 states and 443 transitions. [2022-11-02 20:39:02,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:39:02,349 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) Word has length 173 [2022-11-02 20:39:02,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:02,351 INFO L225 Difference]: With dead ends: 341 [2022-11-02 20:39:02,351 INFO L226 Difference]: Without dead ends: 185 [2022-11-02 20:39:02,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=54, Invalid=253, Unknown=3, NotChecked=32, Total=342 [2022-11-02 20:39:02,353 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 5 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 315 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:02,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1109 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 315 Unchecked, 0.2s Time] [2022-11-02 20:39:02,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-02 20:39:02,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2022-11-02 20:39:02,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 122 states have (on average 1.2049180327868851) internal successors, (147), 123 states have internal predecessors, (147), 41 states have call successors, (41), 19 states have call predecessors, (41), 20 states have return successors, (45), 41 states have call predecessors, (45), 40 states have call successors, (45) [2022-11-02 20:39:02,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 233 transitions. [2022-11-02 20:39:02,372 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 233 transitions. Word has length 173 [2022-11-02 20:39:02,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:02,373 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 233 transitions. [2022-11-02 20:39:02,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-02 20:39:02,374 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 233 transitions. [2022-11-02 20:39:02,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-02 20:39:02,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:02,377 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:39:02,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-02 20:39:02,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:02,597 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:02,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:02,598 INFO L85 PathProgramCache]: Analyzing trace with hash -183837512, now seen corresponding path program 1 times [2022-11-02 20:39:02,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:02,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50478207] [2022-11-02 20:39:02,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:02,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:39:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:39:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:39:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:39:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:39:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:39:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:39:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:39:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:39:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:39:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:39:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:39:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 20:39:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-02 20:39:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:05,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-02 20:39:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:06,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-02 20:39:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:06,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-02 20:39:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:06,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-02 20:39:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:06,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-02 20:39:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:06,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-02 20:39:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:06,085 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-11-02 20:39:06,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:06,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50478207] [2022-11-02 20:39:06,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50478207] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:06,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957578197] [2022-11-02 20:39:06,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:06,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:06,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:06,089 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:06,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:39:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:06,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 2651 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-02 20:39:06,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:07,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:07,248 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-02 20:39:08,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:08,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:08,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:08,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:08,087 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-02 20:39:08,483 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-11-02 20:39:08,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:08,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957578197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:08,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:39:08,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [17] total 30 [2022-11-02 20:39:08,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13313491] [2022-11-02 20:39:08,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:08,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:39:08,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:08,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:39:08,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:39:08,487 INFO L87 Difference]: Start difference. First operand 184 states and 233 transitions. Second operand has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 8 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-02 20:39:09,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:09,711 INFO L93 Difference]: Finished difference Result 350 states and 440 transitions. [2022-11-02 20:39:09,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:39:09,712 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 8 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 178 [2022-11-02 20:39:09,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:09,715 INFO L225 Difference]: With dead ends: 350 [2022-11-02 20:39:09,716 INFO L226 Difference]: Without dead ends: 271 [2022-11-02 20:39:09,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 211 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=126, Invalid=1280, Unknown=0, NotChecked=0, Total=1406 [2022-11-02 20:39:09,718 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 211 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 341 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:09,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1818 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 326 Invalid, 0 Unknown, 341 Unchecked, 0.9s Time] [2022-11-02 20:39:09,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-11-02 20:39:09,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 258. [2022-11-02 20:39:09,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 181 states have (on average 1.2375690607734806) internal successors, (224), 181 states have internal predecessors, (224), 47 states have call successors, (47), 30 states have call predecessors, (47), 29 states have return successors, (51), 46 states have call predecessors, (51), 46 states have call successors, (51) [2022-11-02 20:39:09,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 322 transitions. [2022-11-02 20:39:09,745 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 322 transitions. Word has length 178 [2022-11-02 20:39:09,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:09,746 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 322 transitions. [2022-11-02 20:39:09,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 8 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-02 20:39:09,746 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 322 transitions. [2022-11-02 20:39:09,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 20:39:09,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:09,750 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:39:09,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:09,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 20:39:09,976 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:09,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:09,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1017170911, now seen corresponding path program 1 times [2022-11-02 20:39:09,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:09,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273423842] [2022-11-02 20:39:09,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:09,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:12,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:12,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:39:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:12,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:39:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:12,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:39:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:12,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:39:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:12,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:12,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:12,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:39:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:12,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:39:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:12,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:39:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:12,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:12,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:39:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:12,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:39:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:12,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:12,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:39:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:12,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:39:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:12,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:12,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:12,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:39:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:12,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 20:39:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:12,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-02 20:39:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:13,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-02 20:39:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:13,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-02 20:39:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:13,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-02 20:39:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:13,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:13,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:39:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:13,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:39:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:13,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-02 20:39:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:13,376 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-11-02 20:39:13,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:13,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273423842] [2022-11-02 20:39:13,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273423842] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:13,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022336030] [2022-11-02 20:39:13,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:13,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:13,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:13,380 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:13,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:39:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:14,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:39:14,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:14,395 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-02 20:39:14,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:14,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022336030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:14,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:39:14,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 22 [2022-11-02 20:39:14,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808695114] [2022-11-02 20:39:14,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:14,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:39:14,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:14,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:39:14,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:39:14,400 INFO L87 Difference]: Start difference. First operand 258 states and 322 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-02 20:39:14,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:14,592 INFO L93 Difference]: Finished difference Result 438 states and 552 transitions. [2022-11-02 20:39:14,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:39:14,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 182 [2022-11-02 20:39:14,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:14,596 INFO L225 Difference]: With dead ends: 438 [2022-11-02 20:39:14,596 INFO L226 Difference]: Without dead ends: 267 [2022-11-02 20:39:14,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-02 20:39:14,598 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 2 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:14,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1155 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:39:14,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-02 20:39:14,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2022-11-02 20:39:14,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 187 states have (on average 1.2299465240641712) internal successors, (230), 190 states have internal predecessors, (230), 47 states have call successors, (47), 30 states have call predecessors, (47), 32 states have return successors, (55), 46 states have call predecessors, (55), 46 states have call successors, (55) [2022-11-02 20:39:14,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 332 transitions. [2022-11-02 20:39:14,623 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 332 transitions. Word has length 182 [2022-11-02 20:39:14,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:14,624 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 332 transitions. [2022-11-02 20:39:14,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-02 20:39:14,625 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 332 transitions. [2022-11-02 20:39:14,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-02 20:39:14,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:14,629 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:39:14,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:14,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-02 20:39:14,857 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:14,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:14,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1394290473, now seen corresponding path program 2 times [2022-11-02 20:39:14,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:14,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84560208] [2022-11-02 20:39:14,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:14,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:17,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:17,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:39:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:17,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:39:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:17,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:39:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:17,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:39:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:17,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:17,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:17,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:39:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:17,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:39:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:17,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:39:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:17,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:17,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:39:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:17,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:39:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:17,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:17,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:39:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:17,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:39:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:17,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:17,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:17,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:39:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:17,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 20:39:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:17,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-02 20:39:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:18,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:39:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:18,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:18,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-02 20:39:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:18,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-02 20:39:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:18,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-02 20:39:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:18,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:18,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:39:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:18,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:39:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:18,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-02 20:39:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:18,842 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-02 20:39:18,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:18,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84560208] [2022-11-02 20:39:18,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84560208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:18,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:18,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 20:39:18,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433554060] [2022-11-02 20:39:18,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:18,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:39:18,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:18,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:39:18,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:39:18,845 INFO L87 Difference]: Start difference. First operand 267 states and 332 transitions. Second operand has 20 states, 17 states have (on average 4.588235294117647) internal successors, (78), 14 states have internal predecessors, (78), 9 states have call successors, (27), 7 states have call predecessors, (27), 4 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) [2022-11-02 20:39:23,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:23,682 INFO L93 Difference]: Finished difference Result 400 states and 511 transitions. [2022-11-02 20:39:23,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 20:39:23,683 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 4.588235294117647) internal successors, (78), 14 states have internal predecessors, (78), 9 states have call successors, (27), 7 states have call predecessors, (27), 4 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) Word has length 193 [2022-11-02 20:39:23,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:23,688 INFO L225 Difference]: With dead ends: 400 [2022-11-02 20:39:23,688 INFO L226 Difference]: Without dead ends: 324 [2022-11-02 20:39:23,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=224, Invalid=1258, Unknown=0, NotChecked=0, Total=1482 [2022-11-02 20:39:23,690 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 273 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 2676 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 2887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 2676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:23,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 1097 Invalid, 2887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 2676 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-02 20:39:23,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-11-02 20:39:23,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 297. [2022-11-02 20:39:23,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 206 states have (on average 1.2281553398058251) internal successors, (253), 212 states have internal predecessors, (253), 53 states have call successors, (53), 30 states have call predecessors, (53), 37 states have return successors, (69), 54 states have call predecessors, (69), 52 states have call successors, (69) [2022-11-02 20:39:23,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 375 transitions. [2022-11-02 20:39:23,739 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 375 transitions. Word has length 193 [2022-11-02 20:39:23,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:23,741 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 375 transitions. [2022-11-02 20:39:23,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 4.588235294117647) internal successors, (78), 14 states have internal predecessors, (78), 9 states have call successors, (27), 7 states have call predecessors, (27), 4 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) [2022-11-02 20:39:23,741 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 375 transitions. [2022-11-02 20:39:23,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-02 20:39:23,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:23,747 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:39:23,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:39:23,748 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:23,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:23,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1903763563, now seen corresponding path program 1 times [2022-11-02 20:39:23,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:23,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955347134] [2022-11-02 20:39:23,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:23,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:25,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:25,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:39:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:25,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:39:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:25,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:39:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:25,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:39:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:25,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:39:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:39:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:39:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:39:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:39:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:39:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:39:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:39:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 20:39:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-02 20:39:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:39:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-02 20:39:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-02 20:39:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-02 20:39:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:27,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:27,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:39:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:27,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:39:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:27,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-02 20:39:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:27,327 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-11-02 20:39:27,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:27,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955347134] [2022-11-02 20:39:27,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955347134] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:27,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10668802] [2022-11-02 20:39:27,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:27,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:27,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:27,330 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:27,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:39:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:28,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 2711 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:39:28,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-02 20:39:28,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:28,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10668802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:28,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:39:28,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [20] total 25 [2022-11-02 20:39:28,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647939703] [2022-11-02 20:39:28,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:28,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:39:28,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:28,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:39:28,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:39:28,485 INFO L87 Difference]: Start difference. First operand 297 states and 375 transitions. Second operand has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-02 20:39:28,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:28,697 INFO L93 Difference]: Finished difference Result 432 states and 548 transitions. [2022-11-02 20:39:28,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:39:28,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 193 [2022-11-02 20:39:28,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:28,705 INFO L225 Difference]: With dead ends: 432 [2022-11-02 20:39:28,706 INFO L226 Difference]: Without dead ends: 270 [2022-11-02 20:39:28,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:39:28,708 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 2 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:28,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1156 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:39:28,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-11-02 20:39:28,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 268. [2022-11-02 20:39:28,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 185 states have (on average 1.2216216216216216) internal successors, (226), 189 states have internal predecessors, (226), 49 states have call successors, (49), 28 states have call predecessors, (49), 33 states have return successors, (61), 50 states have call predecessors, (61), 48 states have call successors, (61) [2022-11-02 20:39:28,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 336 transitions. [2022-11-02 20:39:28,757 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 336 transitions. Word has length 193 [2022-11-02 20:39:28,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:28,758 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 336 transitions. [2022-11-02 20:39:28,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-02 20:39:28,759 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 336 transitions. [2022-11-02 20:39:28,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-02 20:39:28,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:28,762 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:39:28,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-02 20:39:28,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:39:28,976 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:28,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:28,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1026335268, now seen corresponding path program 1 times [2022-11-02 20:39:28,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:28,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701771911] [2022-11-02 20:39:28,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:28,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:39:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:39:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:39:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:39:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:39:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:39:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:39:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:39:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:39:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:39:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:39:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:39:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 20:39:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-02 20:39:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:39:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-02 20:39:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-02 20:39:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-02 20:39:29,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-02 20:39:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:39:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-02 20:39:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-11-02 20:39:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:29,945 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2022-11-02 20:39:29,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:29,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701771911] [2022-11-02 20:39:29,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701771911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:29,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:29,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:39:29,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932759286] [2022-11-02 20:39:29,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:29,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:39:29,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:29,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:39:29,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:39:29,951 INFO L87 Difference]: Start difference. First operand 268 states and 336 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (28), 6 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-02 20:39:31,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:31,183 INFO L93 Difference]: Finished difference Result 446 states and 567 transitions. [2022-11-02 20:39:31,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:39:31,184 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (28), 6 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 195 [2022-11-02 20:39:31,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:31,187 INFO L225 Difference]: With dead ends: 446 [2022-11-02 20:39:31,187 INFO L226 Difference]: Without dead ends: 259 [2022-11-02 20:39:31,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:39:31,189 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 314 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:31,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 436 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 20:39:31,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-11-02 20:39:31,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 238. [2022-11-02 20:39:31,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 165 states have (on average 1.206060606060606) internal successors, (199), 168 states have internal predecessors, (199), 43 states have call successors, (43), 26 states have call predecessors, (43), 29 states have return successors, (48), 43 states have call predecessors, (48), 42 states have call successors, (48) [2022-11-02 20:39:31,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 290 transitions. [2022-11-02 20:39:31,215 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 290 transitions. Word has length 195 [2022-11-02 20:39:31,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:31,216 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 290 transitions. [2022-11-02 20:39:31,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (28), 6 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-02 20:39:31,217 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 290 transitions. [2022-11-02 20:39:31,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-02 20:39:31,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:31,219 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:31,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:39:31,219 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:31,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:31,220 INFO L85 PathProgramCache]: Analyzing trace with hash 450820696, now seen corresponding path program 1 times [2022-11-02 20:39:31,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:31,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620752631] [2022-11-02 20:39:31,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:31,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:33,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:33,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:39:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:33,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:39:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:33,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:39:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:33,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:39:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:33,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:39:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:39:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:39:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:39:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:39:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:39:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:39:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:39:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 20:39:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-02 20:39:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:39:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-02 20:39:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-02 20:39:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-02 20:39:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-02 20:39:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:39:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-02 20:39:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:34,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-11-02 20:39:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:35,014 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-11-02 20:39:35,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:35,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620752631] [2022-11-02 20:39:35,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620752631] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:35,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757026555] [2022-11-02 20:39:35,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:35,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:35,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:35,017 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:35,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:39:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:35,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 2759 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-02 20:39:35,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:36,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:36,227 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-02 20:39:36,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:36,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:36,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:37,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:37,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-02 20:39:37,359 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-02 20:39:37,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:37,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757026555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:37,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:39:37,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [19] total 32 [2022-11-02 20:39:37,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916924154] [2022-11-02 20:39:37,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:37,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:39:37,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:37,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:39:37,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2022-11-02 20:39:37,362 INFO L87 Difference]: Start difference. First operand 238 states and 290 transitions. Second operand has 15 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 9 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2022-11-02 20:39:38,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:38,368 INFO L93 Difference]: Finished difference Result 334 states and 405 transitions. [2022-11-02 20:39:38,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:39:38,369 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 9 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) Word has length 200 [2022-11-02 20:39:38,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:38,372 INFO L225 Difference]: With dead ends: 334 [2022-11-02 20:39:38,372 INFO L226 Difference]: Without dead ends: 254 [2022-11-02 20:39:38,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 240 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=150, Invalid=1410, Unknown=0, NotChecked=0, Total=1560 [2022-11-02 20:39:38,375 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 205 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 196 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:38,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1602 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 296 Invalid, 0 Unknown, 196 Unchecked, 0.7s Time] [2022-11-02 20:39:38,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-11-02 20:39:38,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 249. [2022-11-02 20:39:38,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 172 states have (on average 1.191860465116279) internal successors, (205), 175 states have internal predecessors, (205), 45 states have call successors, (45), 28 states have call predecessors, (45), 31 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-11-02 20:39:38,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 299 transitions. [2022-11-02 20:39:38,408 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 299 transitions. Word has length 200 [2022-11-02 20:39:38,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:38,410 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 299 transitions. [2022-11-02 20:39:38,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 9 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2022-11-02 20:39:38,410 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 299 transitions. [2022-11-02 20:39:38,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-11-02 20:39:38,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:38,413 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:38,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:38,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 20:39:38,628 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:38,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:38,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1734404003, now seen corresponding path program 1 times [2022-11-02 20:39:38,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:38,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231440843] [2022-11-02 20:39:38,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:38,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:44,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:44,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:39:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:44,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:39:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:44,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:39:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:44,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:39:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:44,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:44,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:44,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:39:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:44,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:39:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:44,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:39:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:44,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:44,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:39:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:45,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:39:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:45,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:45,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:39:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:45,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:39:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:45,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:45,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:39:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:45,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:39:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:45,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 20:39:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:45,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-02 20:39:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:45,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:39:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:45,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:45,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-02 20:39:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:45,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-02 20:39:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:45,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-02 20:39:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:45,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-02 20:39:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:45,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:39:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:45,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:45,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-02 20:39:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:45,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-11-02 20:39:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:46,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:39:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 24 proven. 22 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-11-02 20:39:46,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:46,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231440843] [2022-11-02 20:39:46,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231440843] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:46,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660047912] [2022-11-02 20:39:46,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:46,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:46,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:46,265 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:46,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:39:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:47,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 2786 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 20:39:47,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:47,462 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-02 20:39:47,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:47,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660047912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:47,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:39:47,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [30] total 34 [2022-11-02 20:39:47,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913664658] [2022-11-02 20:39:47,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:47,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:39:47,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:47,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:39:47,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1041, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:39:47,466 INFO L87 Difference]: Start difference. First operand 249 states and 299 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-02 20:39:47,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:47,653 INFO L93 Difference]: Finished difference Result 488 states and 585 transitions. [2022-11-02 20:39:47,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:39:47,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 209 [2022-11-02 20:39:47,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:47,656 INFO L225 Difference]: With dead ends: 488 [2022-11-02 20:39:47,657 INFO L226 Difference]: Without dead ends: 251 [2022-11-02 20:39:47,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=85, Invalid=1105, Unknown=0, NotChecked=0, Total=1190 [2022-11-02 20:39:47,659 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 2 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:47,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 947 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:39:47,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-11-02 20:39:47,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2022-11-02 20:39:47,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 173 states have (on average 1.1907514450867052) internal successors, (206), 177 states have internal predecessors, (206), 45 states have call successors, (45), 28 states have call predecessors, (45), 32 states have return successors, (50), 45 states have call predecessors, (50), 44 states have call successors, (50) [2022-11-02 20:39:47,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 301 transitions. [2022-11-02 20:39:47,687 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 301 transitions. Word has length 209 [2022-11-02 20:39:47,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:47,687 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 301 transitions. [2022-11-02 20:39:47,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-02 20:39:47,688 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 301 transitions. [2022-11-02 20:39:47,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-02 20:39:47,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:47,690 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:47,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:47,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 20:39:47,912 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:47,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:47,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1271160118, now seen corresponding path program 1 times [2022-11-02 20:39:47,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:47,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250500561] [2022-11-02 20:39:47,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:47,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:48,011 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:39:48,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237001027] [2022-11-02 20:39:48,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:48,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:48,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:48,013 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:48,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 20:39:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:48,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 2891 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 20:39:48,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:48,978 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-02 20:39:48,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:48,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:48,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250500561] [2022-11-02 20:39:48,979 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:39:48,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237001027] [2022-11-02 20:39:48,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237001027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:48,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:48,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:39:48,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136965129] [2022-11-02 20:39:48,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:48,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:39:48,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:48,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:39:48,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:39:48,982 INFO L87 Difference]: Start difference. First operand 251 states and 301 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-02 20:39:49,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:49,140 INFO L93 Difference]: Finished difference Result 429 states and 516 transitions. [2022-11-02 20:39:49,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:39:49,142 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 215 [2022-11-02 20:39:49,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:49,144 INFO L225 Difference]: With dead ends: 429 [2022-11-02 20:39:49,144 INFO L226 Difference]: Without dead ends: 249 [2022-11-02 20:39:49,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:39:49,146 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 2 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:49,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 948 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:39:49,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-11-02 20:39:49,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 244. [2022-11-02 20:39:49,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 168 states have (on average 1.1845238095238095) internal successors, (199), 171 states have internal predecessors, (199), 45 states have call successors, (45), 28 states have call predecessors, (45), 30 states have return successors, (48), 44 states have call predecessors, (48), 44 states have call successors, (48) [2022-11-02 20:39:49,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 292 transitions. [2022-11-02 20:39:49,172 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 292 transitions. Word has length 215 [2022-11-02 20:39:49,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:49,173 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 292 transitions. [2022-11-02 20:39:49,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-02 20:39:49,173 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 292 transitions. [2022-11-02 20:39:49,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-02 20:39:49,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:49,176 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:39:49,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:49,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:49,400 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:49,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:49,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1244691977, now seen corresponding path program 1 times [2022-11-02 20:39:49,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:49,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287707035] [2022-11-02 20:39:49,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:49,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:49,502 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:39:49,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68613473] [2022-11-02 20:39:49,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:49,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:49,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:49,504 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:49,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 20:39:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:50,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 2996 conjuncts, 93 conjunts are in the unsatisfiable core [2022-11-02 20:39:50,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:50,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:50,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-02 20:39:50,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:50,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-02 20:39:53,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:53,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:53,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:53,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:53,172 INFO L356 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2022-11-02 20:39:53,172 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 78 [2022-11-02 20:39:53,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:53,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:53,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:53,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:53,196 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 20:39:53,197 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 70 [2022-11-02 20:40:02,124 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 115 proven. 5 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-02 20:40:02,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:03,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:03,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287707035] [2022-11-02 20:40:03,901 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:40:03,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68613473] [2022-11-02 20:40:03,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68613473] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:03,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:40:03,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2022-11-02 20:40:03,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449292051] [2022-11-02 20:40:03,902 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:03,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 20:40:03,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:03,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 20:40:03,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1072, Unknown=0, NotChecked=0, Total=1190 [2022-11-02 20:40:03,905 INFO L87 Difference]: Start difference. First operand 244 states and 292 transitions. Second operand has 26 states, 22 states have (on average 4.5) internal successors, (99), 24 states have internal predecessors, (99), 12 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2022-11-02 20:40:06,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:06,862 INFO L93 Difference]: Finished difference Result 335 states and 405 transitions. [2022-11-02 20:40:06,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-02 20:40:06,863 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 4.5) internal successors, (99), 24 states have internal predecessors, (99), 12 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 221 [2022-11-02 20:40:06,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:06,865 INFO L225 Difference]: With dead ends: 335 [2022-11-02 20:40:06,865 INFO L226 Difference]: Without dead ends: 255 [2022-11-02 20:40:06,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 206 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=188, Invalid=1792, Unknown=0, NotChecked=0, Total=1980 [2022-11-02 20:40:06,867 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 214 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 372 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:06,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 2051 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 350 Invalid, 0 Unknown, 372 Unchecked, 0.9s Time] [2022-11-02 20:40:06,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-11-02 20:40:06,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 248. [2022-11-02 20:40:06,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 171 states have (on average 1.1812865497076024) internal successors, (202), 174 states have internal predecessors, (202), 45 states have call successors, (45), 28 states have call predecessors, (45), 31 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-11-02 20:40:06,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 296 transitions. [2022-11-02 20:40:06,896 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 296 transitions. Word has length 221 [2022-11-02 20:40:06,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:06,897 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 296 transitions. [2022-11-02 20:40:06,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 4.5) internal successors, (99), 24 states have internal predecessors, (99), 12 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2022-11-02 20:40:06,897 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 296 transitions. [2022-11-02 20:40:06,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-02 20:40:06,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:06,900 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:06,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:07,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 20:40:07,124 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:07,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:07,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1831497991, now seen corresponding path program 1 times [2022-11-02 20:40:07,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:07,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483015812] [2022-11-02 20:40:07,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:07,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:07,223 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:40:07,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429310037] [2022-11-02 20:40:07,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:07,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:07,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:07,225 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:07,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-02 20:40:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:08,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 2991 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:40:08,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:09,797 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_iter_is_valid_~iter.offset Int) (aws_hash_iter_is_valid_~iter.base Int)) (not (= (select (select |c_#memory_$Pointer$.offset| aws_hash_iter_is_valid_~iter.base) aws_hash_iter_is_valid_~iter.offset) 0))) (exists ((aws_hash_iter_is_valid_~iter.offset Int) (aws_hash_iter_is_valid_~iter.base Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_iter_is_valid_~iter.base) aws_hash_iter_is_valid_~iter.offset) 0)))) is different from true [2022-11-02 20:40:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2022-11-02 20:40:18,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:18,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:18,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483015812] [2022-11-02 20:40:18,654 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:40:18,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429310037] [2022-11-02 20:40:18,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429310037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:18,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:18,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:40:18,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498476233] [2022-11-02 20:40:18,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:18,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:40:18,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:18,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:40:18,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2022-11-02 20:40:18,658 INFO L87 Difference]: Start difference. First operand 248 states and 296 transitions. Second operand has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-02 20:40:27,630 WARN L234 SmtUtils]: Spent 8.78s on a formula simplification. DAG size of input: 29 DAG size of output: 23 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 20:40:27,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:27,666 INFO L93 Difference]: Finished difference Result 348 states and 426 transitions. [2022-11-02 20:40:27,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:40:27,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 221 [2022-11-02 20:40:27,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:27,669 INFO L225 Difference]: With dead ends: 348 [2022-11-02 20:40:27,670 INFO L226 Difference]: Without dead ends: 243 [2022-11-02 20:40:27,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2022-11-02 20:40:27,671 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 1 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 312 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:27,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 910 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 312 Unchecked, 0.2s Time] [2022-11-02 20:40:27,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-02 20:40:27,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 241. [2022-11-02 20:40:27,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 165 states have (on average 1.1757575757575758) internal successors, (194), 167 states have internal predecessors, (194), 45 states have call successors, (45), 28 states have call predecessors, (45), 30 states have return successors, (48), 45 states have call predecessors, (48), 44 states have call successors, (48) [2022-11-02 20:40:27,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 287 transitions. [2022-11-02 20:40:27,698 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 287 transitions. Word has length 221 [2022-11-02 20:40:27,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:27,699 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 287 transitions. [2022-11-02 20:40:27,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-02 20:40:27,699 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 287 transitions. [2022-11-02 20:40:27,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 20:40:27,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:27,702 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:27,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:27,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 20:40:27,929 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:27,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:27,929 INFO L85 PathProgramCache]: Analyzing trace with hash -359144008, now seen corresponding path program 1 times [2022-11-02 20:40:27,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:27,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440799260] [2022-11-02 20:40:27,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:27,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:28,026 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:40:28,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1631457090] [2022-11-02 20:40:28,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:28,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:28,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:28,028 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:28,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-02 20:40:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:29,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 93 conjunts are in the unsatisfiable core [2022-11-02 20:40:29,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:29,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:29,421 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-02 20:40:29,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:29,433 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-02 20:40:31,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:31,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:31,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:31,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:31,909 INFO L356 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2022-11-02 20:40:31,910 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 78 [2022-11-02 20:40:31,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:31,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:31,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:31,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:31,933 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 20:40:31,933 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 78 [2022-11-02 20:40:35,956 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 115 proven. 5 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-02 20:40:35,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:37,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:37,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440799260] [2022-11-02 20:40:37,780 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:40:37,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631457090] [2022-11-02 20:40:37,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631457090] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:37,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:40:37,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-11-02 20:40:37,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40119085] [2022-11-02 20:40:37,781 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:37,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-02 20:40:37,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:37,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-02 20:40:37,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1124, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 20:40:37,783 INFO L87 Difference]: Start difference. First operand 241 states and 287 transitions. Second operand has 27 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 24 states have internal predecessors, (100), 12 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2022-11-02 20:40:41,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:41,906 INFO L93 Difference]: Finished difference Result 329 states and 401 transitions. [2022-11-02 20:40:41,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-02 20:40:41,907 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 24 states have internal predecessors, (100), 12 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 222 [2022-11-02 20:40:41,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:41,909 INFO L225 Difference]: With dead ends: 329 [2022-11-02 20:40:41,909 INFO L226 Difference]: Without dead ends: 250 [2022-11-02 20:40:41,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 206 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=206, Invalid=1864, Unknown=0, NotChecked=0, Total=2070 [2022-11-02 20:40:41,911 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 232 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:41,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 1595 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 239 Invalid, 0 Unknown, 160 Unchecked, 0.7s Time] [2022-11-02 20:40:41,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-02 20:40:41,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 246. [2022-11-02 20:40:41,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 170 states have (on average 1.1705882352941177) internal successors, (199), 172 states have internal predecessors, (199), 45 states have call successors, (45), 28 states have call predecessors, (45), 30 states have return successors, (48), 45 states have call predecessors, (48), 44 states have call successors, (48) [2022-11-02 20:40:41,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 292 transitions. [2022-11-02 20:40:41,942 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 292 transitions. Word has length 222 [2022-11-02 20:40:41,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:41,942 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 292 transitions. [2022-11-02 20:40:41,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 24 states have internal predecessors, (100), 12 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2022-11-02 20:40:41,943 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 292 transitions. [2022-11-02 20:40:41,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-02 20:40:41,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:41,945 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:41,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:42,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 20:40:42,167 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:42,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:42,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1437112506, now seen corresponding path program 1 times [2022-11-02 20:40:42,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:42,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920708424] [2022-11-02 20:40:42,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:42,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:42,264 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:40:42,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [664134605] [2022-11-02 20:40:42,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:42,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:42,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:42,267 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:42,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-02 20:40:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:43,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 3007 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-02 20:40:43,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:43,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:43,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-02 20:40:43,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:43,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-02 20:40:45,441 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_3| Int) (|v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_3| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_3|) |v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_3|) 0))) (exists ((|v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_3| Int) (|v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_3| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_3|) |v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_3|) 0)))) is different from true [2022-11-02 20:40:54,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:54,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:54,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:54,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:54,280 INFO L356 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2022-11-02 20:40:54,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 78 [2022-11-02 20:40:54,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:54,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:54,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:54,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:54,301 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 20:40:54,301 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 78 [2022-11-02 20:41:02,602 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 85 proven. 5 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-11-02 20:41:02,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:41:05,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:05,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920708424] [2022-11-02 20:41:05,458 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:41:05,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664134605] [2022-11-02 20:41:05,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664134605] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:05,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:41:05,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-11-02 20:41:05,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962822489] [2022-11-02 20:41:05,460 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-02 20:41:05,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 20:41:05,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:05,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 20:41:05,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1205, Unknown=3, NotChecked=70, Total=1406 [2022-11-02 20:41:05,462 INFO L87 Difference]: Start difference. First operand 246 states and 292 transitions. Second operand has 29 states, 24 states have (on average 4.125) internal successors, (99), 25 states have internal predecessors, (99), 13 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (29), 11 states have call predecessors, (29), 12 states have call successors, (29) [2022-11-02 20:41:33,560 WARN L234 SmtUtils]: Spent 6.17s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 20:41:45,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:45,583 INFO L93 Difference]: Finished difference Result 394 states and 481 transitions. [2022-11-02 20:41:45,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-02 20:41:45,584 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 24 states have (on average 4.125) internal successors, (99), 25 states have internal predecessors, (99), 13 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (29), 11 states have call predecessors, (29), 12 states have call successors, (29) Word has length 225 [2022-11-02 20:41:45,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:45,587 INFO L225 Difference]: With dead ends: 394 [2022-11-02 20:41:45,587 INFO L226 Difference]: Without dead ends: 325 [2022-11-02 20:41:45,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 215 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 57.0s TimeCoverageRelationStatistics Valid=454, Invalid=4224, Unknown=18, NotChecked=134, Total=4830 [2022-11-02 20:41:45,589 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 254 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 3050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1235 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:45,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1456 Invalid, 3050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1661 Invalid, 0 Unknown, 1235 Unchecked, 2.6s Time] [2022-11-02 20:41:45,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-11-02 20:41:45,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 289. [2022-11-02 20:41:45,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 205 states have (on average 1.2) internal successors, (246), 206 states have internal predecessors, (246), 48 states have call successors, (48), 34 states have call predecessors, (48), 35 states have return successors, (53), 48 states have call predecessors, (53), 47 states have call successors, (53) [2022-11-02 20:41:45,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 347 transitions. [2022-11-02 20:41:45,626 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 347 transitions. Word has length 225 [2022-11-02 20:41:45,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:45,627 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 347 transitions. [2022-11-02 20:41:45,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 24 states have (on average 4.125) internal successors, (99), 25 states have internal predecessors, (99), 13 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (29), 11 states have call predecessors, (29), 12 states have call successors, (29) [2022-11-02 20:41:45,627 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 347 transitions. [2022-11-02 20:41:45,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-11-02 20:41:45,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:45,630 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:41:45,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:45,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 20:41:45,845 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:45,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:45,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1338459295, now seen corresponding path program 1 times [2022-11-02 20:41:45,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:45,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948993985] [2022-11-02 20:41:45,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:45,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:45,939 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:41:45,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [705402918] [2022-11-02 20:41:45,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:45,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:45,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:45,942 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:45,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-02 20:41:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:47,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 3019 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:41:47,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:47,055 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-11-02 20:41:47,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:41:47,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:47,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948993985] [2022-11-02 20:41:47,056 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:41:47,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705402918] [2022-11-02 20:41:47,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705402918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:47,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:47,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:41:47,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285706079] [2022-11-02 20:41:47,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:47,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:41:47,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:47,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:41:47,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:41:47,060 INFO L87 Difference]: Start difference. First operand 289 states and 347 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 1 states have call successors, (27) [2022-11-02 20:41:47,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:47,115 INFO L93 Difference]: Finished difference Result 392 states and 484 transitions. [2022-11-02 20:41:47,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:41:47,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 1 states have call successors, (27) Word has length 226 [2022-11-02 20:41:47,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:47,119 INFO L225 Difference]: With dead ends: 392 [2022-11-02 20:41:47,119 INFO L226 Difference]: Without dead ends: 278 [2022-11-02 20:41:47,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:41:47,121 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:47,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 813 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:41:47,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-02 20:41:47,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 274. [2022-11-02 20:41:47,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 192 states have (on average 1.203125) internal successors, (231), 192 states have internal predecessors, (231), 48 states have call successors, (48), 33 states have call predecessors, (48), 33 states have return successors, (51), 48 states have call predecessors, (51), 47 states have call successors, (51) [2022-11-02 20:41:47,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 330 transitions. [2022-11-02 20:41:47,156 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 330 transitions. Word has length 226 [2022-11-02 20:41:47,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:47,157 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 330 transitions. [2022-11-02 20:41:47,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 1 states have call successors, (27) [2022-11-02 20:41:47,157 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 330 transitions. [2022-11-02 20:41:47,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:41:47,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:47,160 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:47,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:47,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:47,385 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:47,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:47,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1959781448, now seen corresponding path program 1 times [2022-11-02 20:41:47,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:47,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645686687] [2022-11-02 20:41:47,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:47,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:47,479 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:41:47,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742682948] [2022-11-02 20:41:47,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:47,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:47,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:47,481 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:47,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-02 20:41:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:50,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 3061 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-02 20:41:50,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:50,871 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-11-02 20:41:50,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:41:50,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:50,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645686687] [2022-11-02 20:41:50,872 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:41:50,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742682948] [2022-11-02 20:41:50,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742682948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:50,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:50,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:41:50,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132437259] [2022-11-02 20:41:50,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:50,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:41:50,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:50,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:41:50,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:41:50,876 INFO L87 Difference]: Start difference. First operand 274 states and 330 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-02 20:41:50,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:50,947 INFO L93 Difference]: Finished difference Result 463 states and 561 transitions. [2022-11-02 20:41:50,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:41:50,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 236 [2022-11-02 20:41:50,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:50,951 INFO L225 Difference]: With dead ends: 463 [2022-11-02 20:41:50,952 INFO L226 Difference]: Without dead ends: 275 [2022-11-02 20:41:50,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 233 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 20:41:50,954 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 2 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 607 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 20:41:50,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 607 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:41:50,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-11-02 20:41:50,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2022-11-02 20:41:51,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 193 states have (on average 1.2020725388601037) internal successors, (232), 193 states have internal predecessors, (232), 48 states have call successors, (48), 33 states have call predecessors, (48), 33 states have return successors, (51), 48 states have call predecessors, (51), 47 states have call successors, (51) [2022-11-02 20:41:51,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 331 transitions. [2022-11-02 20:41:51,003 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 331 transitions. Word has length 236 [2022-11-02 20:41:51,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:51,004 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 331 transitions. [2022-11-02 20:41:51,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-02 20:41:51,005 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 331 transitions. [2022-11-02 20:41:51,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-02 20:41:51,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:51,007 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:51,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:51,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:51,232 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:51,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:51,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1033887265, now seen corresponding path program 1 times [2022-11-02 20:41:51,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:51,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326735720] [2022-11-02 20:41:51,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:51,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:51,328 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:41:51,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399354585] [2022-11-02 20:41:51,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:51,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:51,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:51,331 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:51,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2c7be-2b28-4bfc-be77-1bcfd7455adc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process