./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN --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 00eefb20b1e97d60d3c6a842acdb225be14d327e18edfa8146d29fe131145042 --- 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-6b4ec56 [2022-11-20 12:04:09,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:04:09,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:04:09,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:04:09,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:04:09,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:04:09,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:04:09,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:04:09,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:04:09,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:04:09,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:04:09,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:04:09,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:04:09,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:04:09,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:04:09,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:04:09,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:04:09,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:04:09,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:04:09,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:04:09,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:04:09,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:04:09,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:04:09,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:04:09,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:04:09,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:04:09,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:04:09,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:04:09,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:04:09,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:04:09,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:04:09,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:04:09,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:04:09,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:04:09,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:04:09,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:04:09,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:04:09,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:04:09,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:04:09,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:04:09,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:04:09,877 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 12:04:09,918 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:04:09,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:04:09,919 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:04:09,919 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:04:09,920 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:04:09,920 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:04:09,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:04:09,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:04:09,921 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:04:09,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:04:09,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:04:09,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:04:09,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:04:09,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:04:09,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:04:09,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:04:09,925 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:04:09,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:04:09,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:04:09,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:04:09,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:04:09,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:04:09,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:04:09,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:04:09,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:04:09,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:04:09,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:04:09,936 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:04:09,937 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:04:09,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:04:09,937 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_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00eefb20b1e97d60d3c6a842acdb225be14d327e18edfa8146d29fe131145042 [2022-11-20 12:04:10,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:04:10,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:04:10,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:04:10,265 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:04:10,266 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:04:10,267 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i [2022-11-20 12:04:13,475 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:04:14,053 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:04:14,054 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i [2022-11-20 12:04:14,086 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/data/f6d3313d9/710ff64e072f44b982849cb761f2757a/FLAGc99a34cf7 [2022-11-20 12:04:14,102 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/data/f6d3313d9/710ff64e072f44b982849cb761f2757a [2022-11-20 12:04:14,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:04:14,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:04:14,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:04:14,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:04:14,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:04:14,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:04:14" (1/1) ... [2022-11-20 12:04:14,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74539b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:14, skipping insertion in model container [2022-11-20 12:04:14,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:04:14" (1/1) ... [2022-11-20 12:04:14,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:04:14,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:04:14,553 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4501,4514] [2022-11-20 12:04:14,563 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4561,4574] [2022-11-20 12:04:15,787 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:15,800 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:15,801 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:15,804 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:15,806 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:15,834 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:15,835 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:15,839 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:15,843 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:15,846 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:15,849 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:15,852 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:15,853 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,521 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 12:04:16,523 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 12:04:16,525 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 12:04:16,528 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 12:04:16,530 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 12:04:16,531 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 12:04:16,572 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 12:04:16,573 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 12:04:16,574 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 12:04:16,575 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 12:04:16,760 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 12:04:16,786 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,792 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,866 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,867 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,868 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,869 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,870 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,870 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,871 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,872 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,873 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,873 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,873 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,874 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,874 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,880 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,881 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,881 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,882 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,895 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,895 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,908 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,909 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,910 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:16,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:04:16,966 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:04:16,980 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4501,4514] [2022-11-20 12:04:16,980 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4561,4574] [2022-11-20 12:04:17,016 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,017 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,017 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,018 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,018 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,025 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,026 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,027 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,027 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,029 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,029 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,030 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,030 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,063 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 12:04:17,064 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 12:04:17,064 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 12:04:17,065 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 12:04:17,066 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 12:04:17,067 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 12:04:17,067 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 12:04:17,068 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 12:04:17,068 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 12:04:17,069 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 12:04:17,092 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 12:04:17,106 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,112 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,144 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,145 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,146 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,146 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,146 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,147 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,147 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,148 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,148 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,148 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,149 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,149 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,149 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,150 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,151 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,151 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,151 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,154 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,155 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,161 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,162 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,162 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:04:17,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:04:17,448 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:04:17,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:17 WrapperNode [2022-11-20 12:04:17,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:04:17,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:04:17,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:04:17,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:04:17,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:17" (1/1) ... [2022-11-20 12:04:17,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:17" (1/1) ... [2022-11-20 12:04:17,676 INFO L138 Inliner]: procedures = 697, calls = 1879, calls flagged for inlining = 58, calls inlined = 17, statements flattened = 1144 [2022-11-20 12:04:17,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:04:17,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:04:17,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:04:17,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:04:17,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:17" (1/1) ... [2022-11-20 12:04:17,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:17" (1/1) ... [2022-11-20 12:04:17,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:17" (1/1) ... [2022-11-20 12:04:17,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:17" (1/1) ... [2022-11-20 12:04:17,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:17" (1/1) ... [2022-11-20 12:04:17,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:17" (1/1) ... [2022-11-20 12:04:17,777 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:17" (1/1) ... [2022-11-20 12:04:17,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:17" (1/1) ... [2022-11-20 12:04:17,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:04:17,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:04:17,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:04:17,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:04:17,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:17" (1/1) ... [2022-11-20 12:04:17,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:04:17,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:17,841 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:04:17,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:04:17,891 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-11-20 12:04:17,891 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-11-20 12:04:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_init_dynamic [2022-11-20 12:04:17,892 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_init_dynamic [2022-11-20 12:04:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-20 12:04:17,892 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-20 12:04:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:04:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-20 12:04:17,893 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-20 12:04:17,893 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-20 12:04:17,894 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-20 12:04:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-20 12:04:17,894 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-20 12:04:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-11-20 12:04:17,894 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-11-20 12:04:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2022-11-20 12:04:17,895 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2022-11-20 12:04:17,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:04:17,895 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-20 12:04:17,896 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-20 12:04:17,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 12:04:17,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 12:04:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:04:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:04:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:04:17,903 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2022-11-20 12:04:17,903 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2022-11-20 12:04:17,904 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-20 12:04:17,905 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-20 12:04:17,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:04:17,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:04:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-20 12:04:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-20 12:04:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-20 12:04:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-20 12:04:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-20 12:04:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-20 12:04:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-20 12:04:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-20 12:04:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-20 12:04:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-20 12:04:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-20 12:04:17,913 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-20 12:04:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 12:04:17,913 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 12:04:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 12:04:17,913 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 12:04:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-20 12:04:17,914 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-20 12:04:17,914 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2022-11-20 12:04:17,914 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2022-11-20 12:04:17,914 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-11-20 12:04:17,914 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-11-20 12:04:17,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:04:17,915 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-20 12:04:17,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-20 12:04:17,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:04:17,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:04:17,915 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_push_ref [2022-11-20 12:04:17,915 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_push_ref [2022-11-20 12:04:17,916 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-11-20 12:04:17,916 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-11-20 12:04:17,916 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-20 12:04:17,917 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-20 12:04:17,917 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-20 12:04:17,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-20 12:04:17,918 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-20 12:04:17,919 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-20 12:04:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:04:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-20 12:04:17,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-20 12:04:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2022-11-20 12:04:17,920 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2022-11-20 12:04:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-11-20 12:04:17,920 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-11-20 12:04:17,921 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 12:04:17,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 12:04:17,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:04:18,466 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:04:18,470 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:04:20,118 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:04:20,142 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:04:20,142 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-20 12:04:20,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:04:20 BoogieIcfgContainer [2022-11-20 12:04:20,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:04:20,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:04:20,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:04:20,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:04:20,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:04:14" (1/3) ... [2022-11-20 12:04:20,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c632e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:04:20, skipping insertion in model container [2022-11-20 12:04:20,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:17" (2/3) ... [2022-11-20 12:04:20,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c632e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:04:20, skipping insertion in model container [2022-11-20 12:04:20,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:04:20" (3/3) ... [2022-11-20 12:04:20,165 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_push_ref_harness.i [2022-11-20 12:04:20,231 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:04:20,232 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 12:04:20,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:04:20,367 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;@2348d534, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:04:20,367 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 12:04:20,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 533 states, 305 states have (on average 1.2459016393442623) internal successors, (380), 308 states have internal predecessors, (380), 193 states have call successors, (193), 33 states have call predecessors, (193), 33 states have return successors, (193), 193 states have call predecessors, (193), 193 states have call successors, (193) [2022-11-20 12:04:20,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-20 12:04:20,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:20,410 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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] [2022-11-20 12:04:20,411 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:04:20,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:20,421 INFO L85 PathProgramCache]: Analyzing trace with hash -2094771320, now seen corresponding path program 1 times [2022-11-20 12:04:20,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:20,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986686583] [2022-11-20 12:04:20,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:20,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:21,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:04:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:21,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:04:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:21,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:04:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:21,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:04:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:21,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:04:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:21,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:04:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:21,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:04:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:21,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:04:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:21,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:04:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:21,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 12:04:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:22,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 12:04:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:22,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 12:04:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:22,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:04:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:22,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:04:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:22,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:04:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:22,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-20 12:04:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:22,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-20 12:04:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:22,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-20 12:04:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:22,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 12:04:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:22,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 12:04:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:22,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 12:04:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:22,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-20 12:04:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:22,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-20 12:04:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:22,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-20 12:04:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:22,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-20 12:04:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:22,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-20 12:04:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:22,241 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-11-20 12:04:22,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:22,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986686583] [2022-11-20 12:04:22,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986686583] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:04:22,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565813522] [2022-11-20 12:04:22,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:22,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:22,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:22,250 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:04:22,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:04:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:22,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 2408 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:04:22,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:23,124 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-11-20 12:04:23,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:23,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565813522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:23,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:04:23,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-20 12:04:23,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038522775] [2022-11-20 12:04:23,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:23,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:04:23,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:23,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:04:23,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:04:23,165 INFO L87 Difference]: Start difference. First operand has 533 states, 305 states have (on average 1.2459016393442623) internal successors, (380), 308 states have internal predecessors, (380), 193 states have call successors, (193), 33 states have call predecessors, (193), 33 states have return successors, (193), 193 states have call predecessors, (193), 193 states have call successors, (193) Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-20 12:04:23,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:23,645 INFO L93 Difference]: Finished difference Result 1055 states and 1663 transitions. [2022-11-20 12:04:23,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:04:23,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 162 [2022-11-20 12:04:23,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:23,676 INFO L225 Difference]: With dead ends: 1055 [2022-11-20 12:04:23,676 INFO L226 Difference]: Without dead ends: 528 [2022-11-20 12:04:23,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:04:23,697 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 762 mSDsluCounter, 2078 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:23,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 2791 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:04:23,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-11-20 12:04:23,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2022-11-20 12:04:23,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 300 states have (on average 1.2266666666666666) internal successors, (368), 303 states have internal predecessors, (368), 193 states have call successors, (193), 33 states have call predecessors, (193), 33 states have return successors, (199), 191 states have call predecessors, (199), 191 states have call successors, (199) [2022-11-20 12:04:23,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 760 transitions. [2022-11-20 12:04:23,813 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 760 transitions. Word has length 162 [2022-11-20 12:04:23,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:23,814 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 760 transitions. [2022-11-20 12:04:23,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-20 12:04:23,815 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 760 transitions. [2022-11-20 12:04:23,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-20 12:04:23,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:23,819 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:23,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:24,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:24,029 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:04:24,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:24,030 INFO L85 PathProgramCache]: Analyzing trace with hash 106032083, now seen corresponding path program 1 times [2022-11-20 12:04:24,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:24,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463940007] [2022-11-20 12:04:24,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:24,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:24,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:04:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:24,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:04:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:24,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:04:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:24,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:04:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:24,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:04:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:24,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:04:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:24,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:04:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:24,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:04:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:24,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:04:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:24,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 12:04:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:24,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:04:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:25,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 12:04:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:25,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 12:04:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:25,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:04:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:25,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 12:04:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:25,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:04:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:25,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-20 12:04:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:25,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-20 12:04:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:25,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-20 12:04:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:25,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-20 12:04:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:25,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 12:04:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:25,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-20 12:04:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:25,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-20 12:04:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:25,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-20 12:04:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:25,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-20 12:04:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:25,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-20 12:04:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:25,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-20 12:04:25,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:25,242 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-11-20 12:04:25,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:25,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463940007] [2022-11-20 12:04:25,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463940007] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:04:25,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781243626] [2022-11-20 12:04:25,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:25,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:25,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:25,244 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:04:25,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:04:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:25,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 2458 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:04:25,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:26,089 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-11-20 12:04:26,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:26,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781243626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:26,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:04:26,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-20 12:04:26,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799166649] [2022-11-20 12:04:26,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:26,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:04:26,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:26,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:04:26,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:04:26,092 INFO L87 Difference]: Start difference. First operand 528 states and 760 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-11-20 12:04:26,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:26,822 INFO L93 Difference]: Finished difference Result 1044 states and 1544 transitions. [2022-11-20 12:04:26,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:04:26,823 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 170 [2022-11-20 12:04:26,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:26,829 INFO L225 Difference]: With dead ends: 1044 [2022-11-20 12:04:26,829 INFO L226 Difference]: Without dead ends: 549 [2022-11-20 12:04:26,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:04:26,834 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 798 mSDsluCounter, 3236 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 3911 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:26,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 3911 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:04:26,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-11-20 12:04:26,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 547. [2022-11-20 12:04:26,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 316 states have (on average 1.2341772151898733) internal successors, (390), 319 states have internal predecessors, (390), 195 states have call successors, (195), 33 states have call predecessors, (195), 34 states have return successors, (233), 194 states have call predecessors, (233), 193 states have call successors, (233) [2022-11-20 12:04:26,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 818 transitions. [2022-11-20 12:04:26,919 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 818 transitions. Word has length 170 [2022-11-20 12:04:26,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:26,920 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 818 transitions. [2022-11-20 12:04:26,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-11-20 12:04:26,920 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 818 transitions. [2022-11-20 12:04:26,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-20 12:04:26,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:26,927 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:26,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:27,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:27,137 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:04:27,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:27,137 INFO L85 PathProgramCache]: Analyzing trace with hash 38840048, now seen corresponding path program 1 times [2022-11-20 12:04:27,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:27,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264609560] [2022-11-20 12:04:27,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:27,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:27,256 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:04:27,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617667004] [2022-11-20 12:04:27,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:27,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:27,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:27,259 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:04:27,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:04:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:27,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 2599 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:04:27,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:28,010 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-11-20 12:04:28,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:28,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:28,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264609560] [2022-11-20 12:04:28,011 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:04:28,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617667004] [2022-11-20 12:04:28,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617667004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:28,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:28,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:04:28,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374558924] [2022-11-20 12:04:28,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:28,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:04:28,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:28,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:04:28,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:04:28,015 INFO L87 Difference]: Start difference. First operand 547 states and 818 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-20 12:04:28,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:28,460 INFO L93 Difference]: Finished difference Result 1069 states and 1622 transitions. [2022-11-20 12:04:28,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:04:28,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 185 [2022-11-20 12:04:28,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:28,467 INFO L225 Difference]: With dead ends: 1069 [2022-11-20 12:04:28,468 INFO L226 Difference]: Without dead ends: 555 [2022-11-20 12:04:28,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:04:28,473 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 781 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 3429 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:28,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 3429 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:04:28,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-11-20 12:04:28,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 547. [2022-11-20 12:04:28,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 316 states have (on average 1.2341772151898733) internal successors, (390), 319 states have internal predecessors, (390), 195 states have call successors, (195), 33 states have call predecessors, (195), 34 states have return successors, (233), 194 states have call predecessors, (233), 193 states have call successors, (233) [2022-11-20 12:04:28,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 818 transitions. [2022-11-20 12:04:28,526 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 818 transitions. Word has length 185 [2022-11-20 12:04:28,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:28,527 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 818 transitions. [2022-11-20 12:04:28,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-20 12:04:28,527 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 818 transitions. [2022-11-20 12:04:28,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-20 12:04:28,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:28,531 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:28,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:28,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:28,743 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:04:28,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:28,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1666437482, now seen corresponding path program 1 times [2022-11-20 12:04:28,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:28,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489699204] [2022-11-20 12:04:28,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:28,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:28,836 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:04:28,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427135061] [2022-11-20 12:04:28,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:28,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:28,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:28,838 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:04:28,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:04:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:29,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:04:29,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:29,728 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-20 12:04:29,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:29,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:29,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489699204] [2022-11-20 12:04:29,729 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:04:29,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427135061] [2022-11-20 12:04:29,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427135061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:29,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:29,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:04:29,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485277532] [2022-11-20 12:04:29,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:29,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:04:29,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:29,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:04:29,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:04:29,732 INFO L87 Difference]: Start difference. First operand 547 states and 818 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-20 12:04:30,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:30,696 INFO L93 Difference]: Finished difference Result 1079 states and 1631 transitions. [2022-11-20 12:04:30,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:04:30,697 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 201 [2022-11-20 12:04:30,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:30,704 INFO L225 Difference]: With dead ends: 1079 [2022-11-20 12:04:30,705 INFO L226 Difference]: Without dead ends: 565 [2022-11-20 12:04:30,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:04:30,716 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 831 mSDsluCounter, 3839 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 4507 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:30,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 4507 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 12:04:30,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-11-20 12:04:30,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 547. [2022-11-20 12:04:30,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 316 states have (on average 1.2341772151898733) internal successors, (390), 319 states have internal predecessors, (390), 195 states have call successors, (195), 33 states have call predecessors, (195), 34 states have return successors, (233), 194 states have call predecessors, (233), 193 states have call successors, (233) [2022-11-20 12:04:30,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 818 transitions. [2022-11-20 12:04:30,770 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 818 transitions. Word has length 201 [2022-11-20 12:04:30,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:30,771 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 818 transitions. [2022-11-20 12:04:30,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-20 12:04:30,771 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 818 transitions. [2022-11-20 12:04:30,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-20 12:04:30,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:30,777 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 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, 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] [2022-11-20 12:04:30,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:30,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:30,989 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:04:30,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:30,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1077329093, now seen corresponding path program 2 times [2022-11-20 12:04:30,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:30,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071016937] [2022-11-20 12:04:30,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:30,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:31,093 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:04:31,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211090150] [2022-11-20 12:04:31,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:04:31,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:31,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:31,095 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:04:31,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:04:31,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:04:31,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:04:31,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 2812 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 12:04:31,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:32,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-20 12:04:32,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-20 12:04:32,198 INFO L321 Elim1Store]: treesize reduction 40, result has 50.6 percent of original size [2022-11-20 12:04:32,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 74 [2022-11-20 12:04:32,934 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2022-11-20 12:04:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-20 12:04:33,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:33,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:33,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071016937] [2022-11-20 12:04:33,056 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:04:33,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211090150] [2022-11-20 12:04:33,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211090150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:33,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:33,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:04:33,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524904413] [2022-11-20 12:04:33,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:33,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:04:33,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:33,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:04:33,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:04:33,059 INFO L87 Difference]: Start difference. First operand 547 states and 818 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) [2022-11-20 12:04:33,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:33,833 INFO L93 Difference]: Finished difference Result 1124 states and 1666 transitions. [2022-11-20 12:04:33,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:04:33,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) Word has length 216 [2022-11-20 12:04:33,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:33,840 INFO L225 Difference]: With dead ends: 1124 [2022-11-20 12:04:33,840 INFO L226 Difference]: Without dead ends: 592 [2022-11-20 12:04:33,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:04:33,845 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 245 mSDsluCounter, 4101 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 4848 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:33,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 4848 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:04:33,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-11-20 12:04:33,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 585. [2022-11-20 12:04:33,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 341 states have (on average 1.219941348973607) internal successors, (416), 345 states have internal predecessors, (416), 200 states have call successors, (200), 42 states have call predecessors, (200), 42 states have return successors, (242), 197 states have call predecessors, (242), 198 states have call successors, (242) [2022-11-20 12:04:33,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 858 transitions. [2022-11-20 12:04:33,913 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 858 transitions. Word has length 216 [2022-11-20 12:04:33,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:33,915 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 858 transitions. [2022-11-20 12:04:33,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) [2022-11-20 12:04:33,916 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 858 transitions. [2022-11-20 12:04:33,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-11-20 12:04:33,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:33,921 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 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, 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] [2022-11-20 12:04:33,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:34,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:34,132 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:04:34,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:34,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1467473338, now seen corresponding path program 1 times [2022-11-20 12:04:34,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:34,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455188370] [2022-11-20 12:04:34,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:34,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:34,220 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:04:34,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2119738536] [2022-11-20 12:04:34,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:34,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:34,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:34,222 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:04:34,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:04:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 2862 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:04:34,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-11-20 12:04:35,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:35,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:35,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455188370] [2022-11-20 12:04:35,054 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:04:35,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119738536] [2022-11-20 12:04:35,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119738536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:35,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:35,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:04:35,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424732872] [2022-11-20 12:04:35,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:35,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:04:35,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:35,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:04:35,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:04:35,056 INFO L87 Difference]: Start difference. First operand 585 states and 858 transitions. Second operand has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-20 12:04:36,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:36,117 INFO L93 Difference]: Finished difference Result 1105 states and 1646 transitions. [2022-11-20 12:04:36,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:04:36,118 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) Word has length 224 [2022-11-20 12:04:36,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:36,123 INFO L225 Difference]: With dead ends: 1105 [2022-11-20 12:04:36,123 INFO L226 Difference]: Without dead ends: 601 [2022-11-20 12:04:36,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:04:36,128 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 819 mSDsluCounter, 4351 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 5022 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:36,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 5022 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 12:04:36,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-11-20 12:04:36,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 599. [2022-11-20 12:04:36,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 354 states have (on average 1.2259887005649717) internal successors, (434), 357 states have internal predecessors, (434), 201 states have call successors, (201), 42 states have call predecessors, (201), 42 states have return successors, (243), 199 states have call predecessors, (243), 199 states have call successors, (243) [2022-11-20 12:04:36,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 878 transitions. [2022-11-20 12:04:36,174 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 878 transitions. Word has length 224 [2022-11-20 12:04:36,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:36,175 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 878 transitions. [2022-11-20 12:04:36,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-20 12:04:36,175 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 878 transitions. [2022-11-20 12:04:36,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-20 12:04:36,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:36,180 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 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, 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] [2022-11-20 12:04:36,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:36,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 12:04:36,390 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:04:36,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:36,391 INFO L85 PathProgramCache]: Analyzing trace with hash -107893323, now seen corresponding path program 2 times [2022-11-20 12:04:36,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:36,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765655416] [2022-11-20 12:04:36,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:36,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:36,494 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:04:36,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1893742695] [2022-11-20 12:04:36,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:04:36,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:36,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:36,499 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:04:36,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:04:37,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:04:37,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:04:37,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 3003 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:04:37,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:37,588 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-11-20 12:04:37,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:37,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:37,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765655416] [2022-11-20 12:04:37,589 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:04:37,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893742695] [2022-11-20 12:04:37,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893742695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:37,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:37,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:04:37,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843684923] [2022-11-20 12:04:37,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:37,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:04:37,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:37,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:04:37,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:04:37,592 INFO L87 Difference]: Start difference. First operand 599 states and 878 transitions. Second operand has 9 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-20 12:04:38,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:38,296 INFO L93 Difference]: Finished difference Result 1125 states and 1678 transitions. [2022-11-20 12:04:38,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:04:38,297 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) Word has length 239 [2022-11-20 12:04:38,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:38,302 INFO L225 Difference]: With dead ends: 1125 [2022-11-20 12:04:38,303 INFO L226 Difference]: Without dead ends: 607 [2022-11-20 12:04:38,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:04:38,307 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 848 mSDsluCounter, 3798 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 4471 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:38,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 4471 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:04:38,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2022-11-20 12:04:38,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 599. [2022-11-20 12:04:38,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 354 states have (on average 1.2259887005649717) internal successors, (434), 357 states have internal predecessors, (434), 201 states have call successors, (201), 42 states have call predecessors, (201), 42 states have return successors, (243), 199 states have call predecessors, (243), 199 states have call successors, (243) [2022-11-20 12:04:38,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 878 transitions. [2022-11-20 12:04:38,404 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 878 transitions. Word has length 239 [2022-11-20 12:04:38,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:38,405 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 878 transitions. [2022-11-20 12:04:38,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-20 12:04:38,406 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 878 transitions. [2022-11-20 12:04:38,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-11-20 12:04:38,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:38,410 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 4, 3, 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, 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] [2022-11-20 12:04:38,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:38,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:38,622 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:04:38,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:38,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1070779685, now seen corresponding path program 1 times [2022-11-20 12:04:38,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:38,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417963445] [2022-11-20 12:04:38,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:38,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:38,722 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:04:38,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614145360] [2022-11-20 12:04:38,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:38,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:38,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:38,724 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:04:38,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:04:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:39,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 3075 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:04:39,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:39,611 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-11-20 12:04:39,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:39,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:39,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417963445] [2022-11-20 12:04:39,612 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:04:39,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614145360] [2022-11-20 12:04:39,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614145360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:39,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:39,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:04:39,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349907816] [2022-11-20 12:04:39,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:39,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:04:39,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:39,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:04:39,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:04:39,614 INFO L87 Difference]: Start difference. First operand 599 states and 878 transitions. Second operand has 11 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 6 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (29), 5 states have call predecessors, (29), 6 states have call successors, (29) [2022-11-20 12:04:40,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:40,920 INFO L93 Difference]: Finished difference Result 1119 states and 1662 transitions. [2022-11-20 12:04:40,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:04:40,921 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 6 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (29), 5 states have call predecessors, (29), 6 states have call successors, (29) Word has length 255 [2022-11-20 12:04:40,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:40,926 INFO L225 Difference]: With dead ends: 1119 [2022-11-20 12:04:40,926 INFO L226 Difference]: Without dead ends: 601 [2022-11-20 12:04:40,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:04:40,930 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 888 mSDsluCounter, 4786 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 5428 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:40,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 5428 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 12:04:40,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-11-20 12:04:40,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 583. [2022-11-20 12:04:40,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 340 states have (on average 1.2205882352941178) internal successors, (415), 343 states have internal predecessors, (415), 200 states have call successors, (200), 42 states have call predecessors, (200), 41 states have return successors, (234), 197 states have call predecessors, (234), 198 states have call successors, (234) [2022-11-20 12:04:40,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 849 transitions. [2022-11-20 12:04:40,978 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 849 transitions. Word has length 255 [2022-11-20 12:04:40,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:40,979 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 849 transitions. [2022-11-20 12:04:40,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 6 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (29), 5 states have call predecessors, (29), 6 states have call successors, (29) [2022-11-20 12:04:40,979 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 849 transitions. [2022-11-20 12:04:40,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-11-20 12:04:40,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:40,984 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-20 12:04:41,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-20 12:04:41,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:41,203 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:04:41,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:41,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2073139346, now seen corresponding path program 2 times [2022-11-20 12:04:41,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:41,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779865232] [2022-11-20 12:04:41,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:41,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:41,318 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:04:41,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105712247] [2022-11-20 12:04:41,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:04:41,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:41,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:41,320 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:04:41,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:04:42,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:04:42,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:04:42,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 3216 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 12:04:42,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:42,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-20 12:04:42,375 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-20 12:04:42,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-11-20 12:04:42,681 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2022-11-20 12:04:42,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:42,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:42,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779865232] [2022-11-20 12:04:42,682 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:04:42,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105712247] [2022-11-20 12:04:42,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105712247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:42,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:42,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:04:42,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497413192] [2022-11-20 12:04:42,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:42,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:04:42,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:42,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:04:42,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:04:42,689 INFO L87 Difference]: Start difference. First operand 583 states and 849 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-20 12:04:43,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:43,542 INFO L93 Difference]: Finished difference Result 1086 states and 1599 transitions. [2022-11-20 12:04:43,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:04:43,543 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) Word has length 270 [2022-11-20 12:04:43,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:43,553 INFO L225 Difference]: With dead ends: 1086 [2022-11-20 12:04:43,553 INFO L226 Difference]: Without dead ends: 590 [2022-11-20 12:04:43,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:04:43,559 INFO L413 NwaCegarLoop]: 696 mSDtfsCounter, 243 mSDsluCounter, 4398 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 5094 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:43,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 5094 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:04:43,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-11-20 12:04:43,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 583. [2022-11-20 12:04:43,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 340 states have (on average 1.2205882352941178) internal successors, (415), 343 states have internal predecessors, (415), 200 states have call successors, (200), 42 states have call predecessors, (200), 41 states have return successors, (231), 197 states have call predecessors, (231), 198 states have call successors, (231) [2022-11-20 12:04:43,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 846 transitions. [2022-11-20 12:04:43,611 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 846 transitions. Word has length 270 [2022-11-20 12:04:43,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:43,611 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 846 transitions. [2022-11-20 12:04:43,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-20 12:04:43,612 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 846 transitions. [2022-11-20 12:04:43,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-11-20 12:04:43,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:43,617 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 12:04:43,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:43,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:43,830 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:04:43,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:43,830 INFO L85 PathProgramCache]: Analyzing trace with hash -750298113, now seen corresponding path program 3 times [2022-11-20 12:04:43,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:43,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589102857] [2022-11-20 12:04:43,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:43,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:43,979 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:04:43,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [965332706] [2022-11-20 12:04:43,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:04:43,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:43,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:43,982 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:04:44,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 12:04:44,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:04:44,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:04:44,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 1885 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:04:44,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:44,682 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2022-11-20 12:04:44,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:44,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:44,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589102857] [2022-11-20 12:04:44,683 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:04:44,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965332706] [2022-11-20 12:04:44,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965332706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:44,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:44,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:04:44,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161660941] [2022-11-20 12:04:44,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:44,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:04:44,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:44,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:04:44,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:04:44,686 INFO L87 Difference]: Start difference. First operand 583 states and 846 transitions. Second operand has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-20 12:04:45,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:45,163 INFO L93 Difference]: Finished difference Result 1074 states and 1592 transitions. [2022-11-20 12:04:45,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:04:45,164 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 285 [2022-11-20 12:04:45,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:45,169 INFO L225 Difference]: With dead ends: 1074 [2022-11-20 12:04:45,169 INFO L226 Difference]: Without dead ends: 583 [2022-11-20 12:04:45,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:04:45,174 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 2 mSDsluCounter, 2718 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3428 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:45,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3428 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:04:45,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-11-20 12:04:45,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 583. [2022-11-20 12:04:45,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 340 states have (on average 1.2205882352941178) internal successors, (415), 343 states have internal predecessors, (415), 200 states have call successors, (200), 42 states have call predecessors, (200), 41 states have return successors, (230), 197 states have call predecessors, (230), 198 states have call successors, (230) [2022-11-20 12:04:45,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 845 transitions. [2022-11-20 12:04:45,217 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 845 transitions. Word has length 285 [2022-11-20 12:04:45,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:45,218 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 845 transitions. [2022-11-20 12:04:45,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-20 12:04:45,218 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 845 transitions. [2022-11-20 12:04:45,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-11-20 12:04:45,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:45,220 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:45,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:45,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 12:04:45,430 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:04:45,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:45,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1009875168, now seen corresponding path program 4 times [2022-11-20 12:04:45,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:45,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027255972] [2022-11-20 12:04:45,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:45,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:45,522 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:04:45,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [954849951] [2022-11-20 12:04:45,522 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:04:45,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:45,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:45,524 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:04:45,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 12:04:46,486 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:04:46,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:04:46,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 3498 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:04:46,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:46,659 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-20 12:04:46,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:46,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:46,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027255972] [2022-11-20 12:04:46,660 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:04:46,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954849951] [2022-11-20 12:04:46,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954849951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:46,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:46,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:04:46,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179250381] [2022-11-20 12:04:46,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:46,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:04:46,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:46,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:04:46,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:04:46,664 INFO L87 Difference]: Start difference. First operand 583 states and 845 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 6 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-20 12:04:47,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:47,653 INFO L93 Difference]: Finished difference Result 1085 states and 1593 transitions. [2022-11-20 12:04:47,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:04:47,654 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 6 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) Word has length 300 [2022-11-20 12:04:47,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:47,659 INFO L225 Difference]: With dead ends: 1085 [2022-11-20 12:04:47,659 INFO L226 Difference]: Without dead ends: 595 [2022-11-20 12:04:47,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:04:47,663 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 847 mSDsluCounter, 4845 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 5496 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:47,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 5496 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 12:04:47,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-11-20 12:04:47,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2022-11-20 12:04:47,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 346 states have (on average 1.2196531791907514) internal successors, (422), 349 states have internal predecessors, (422), 205 states have call successors, (205), 43 states have call predecessors, (205), 42 states have return successors, (235), 202 states have call predecessors, (235), 203 states have call successors, (235) [2022-11-20 12:04:47,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 862 transitions. [2022-11-20 12:04:47,714 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 862 transitions. Word has length 300 [2022-11-20 12:04:47,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:47,718 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 862 transitions. [2022-11-20 12:04:47,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 6 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-20 12:04:47,718 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 862 transitions. [2022-11-20 12:04:47,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-11-20 12:04:47,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:47,728 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 12:04:47,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:47,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 12:04:47,934 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:04:47,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:47,935 INFO L85 PathProgramCache]: Analyzing trace with hash 99374671, now seen corresponding path program 1 times [2022-11-20 12:04:47,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:47,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706438272] [2022-11-20 12:04:47,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:47,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:48,027 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:04:48,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1460425236] [2022-11-20 12:04:48,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:48,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:48,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:48,029 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:04:48,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 12:04:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:48,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 3639 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:04:48,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2022-11-20 12:04:49,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:49,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:49,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706438272] [2022-11-20 12:04:49,047 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:04:49,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460425236] [2022-11-20 12:04:49,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460425236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:49,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:49,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:04:49,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143012430] [2022-11-20 12:04:49,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:49,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:04:49,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:49,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:04:49,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:04:49,050 INFO L87 Difference]: Start difference. First operand 595 states and 862 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 12:04:49,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:49,651 INFO L93 Difference]: Finished difference Result 1157 states and 1721 transitions. [2022-11-20 12:04:49,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:04:49,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 315 [2022-11-20 12:04:49,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:49,657 INFO L225 Difference]: With dead ends: 1157 [2022-11-20 12:04:49,657 INFO L226 Difference]: Without dead ends: 631 [2022-11-20 12:04:49,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:04:49,661 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 23 mSDsluCounter, 2780 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 3531 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:49,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 3531 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:04:49,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2022-11-20 12:04:49,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 603. [2022-11-20 12:04:49,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 354 states have (on average 1.2203389830508475) internal successors, (432), 357 states have internal predecessors, (432), 205 states have call successors, (205), 43 states have call predecessors, (205), 42 states have return successors, (235), 202 states have call predecessors, (235), 203 states have call successors, (235) [2022-11-20 12:04:49,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 872 transitions. [2022-11-20 12:04:49,714 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 872 transitions. Word has length 315 [2022-11-20 12:04:49,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:49,715 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 872 transitions. [2022-11-20 12:04:49,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 12:04:49,715 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 872 transitions. [2022-11-20 12:04:49,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-11-20 12:04:49,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:49,718 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 12:04:49,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:49,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 12:04:49,930 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:04:49,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:49,931 INFO L85 PathProgramCache]: Analyzing trace with hash 27240139, now seen corresponding path program 1 times [2022-11-20 12:04:49,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:49,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429589691] [2022-11-20 12:04:49,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:49,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:50,024 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:04:50,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1267498891] [2022-11-20 12:04:50,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:50,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:50,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:50,027 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:04:50,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 12:04:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:50,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 3633 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:04:50,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:50,955 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-11-20 12:04:50,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:50,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:50,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429589691] [2022-11-20 12:04:50,956 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:04:50,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267498891] [2022-11-20 12:04:50,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267498891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:50,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:50,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:04:50,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083300640] [2022-11-20 12:04:50,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:50,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:04:50,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:50,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:04:50,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:04:50,959 INFO L87 Difference]: Start difference. First operand 603 states and 872 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 12:04:51,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:51,027 INFO L93 Difference]: Finished difference Result 1145 states and 1691 transitions. [2022-11-20 12:04:51,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:04:51,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 315 [2022-11-20 12:04:51,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:51,034 INFO L225 Difference]: With dead ends: 1145 [2022-11-20 12:04:51,035 INFO L226 Difference]: Without dead ends: 611 [2022-11-20 12:04:51,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:04:51,040 INFO L413 NwaCegarLoop]: 748 mSDtfsCounter, 3 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2239 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:51,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2239 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:04:51,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-11-20 12:04:51,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 607. [2022-11-20 12:04:51,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 358 states have (on average 1.217877094972067) internal successors, (436), 361 states have internal predecessors, (436), 205 states have call successors, (205), 43 states have call predecessors, (205), 42 states have return successors, (235), 202 states have call predecessors, (235), 203 states have call successors, (235) [2022-11-20 12:04:51,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 876 transitions. [2022-11-20 12:04:51,085 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 876 transitions. Word has length 315 [2022-11-20 12:04:51,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:51,085 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 876 transitions. [2022-11-20 12:04:51,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 12:04:51,086 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 876 transitions. [2022-11-20 12:04:51,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-11-20 12:04:51,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:51,089 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 12:04:51,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:51,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 12:04:51,301 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:04:51,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:51,301 INFO L85 PathProgramCache]: Analyzing trace with hash -375069113, now seen corresponding path program 1 times [2022-11-20 12:04:51,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:51,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306099372] [2022-11-20 12:04:51,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:51,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:51,448 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:04:51,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [523235048] [2022-11-20 12:04:51,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:51,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:51,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:51,450 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:04:51,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 12:04:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:52,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 3623 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:04:52,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:52,543 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 348 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-11-20 12:04:52,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:52,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:52,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306099372] [2022-11-20 12:04:52,543 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:04:52,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523235048] [2022-11-20 12:04:52,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523235048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:52,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:52,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:04:52,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144699188] [2022-11-20 12:04:52,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:52,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:04:52,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:52,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:04:52,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:04:52,546 INFO L87 Difference]: Start difference. First operand 607 states and 876 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2022-11-20 12:04:52,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:52,809 INFO L93 Difference]: Finished difference Result 1202 states and 1764 transitions. [2022-11-20 12:04:52,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:04:52,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 315 [2022-11-20 12:04:52,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:52,816 INFO L225 Difference]: With dead ends: 1202 [2022-11-20 12:04:52,816 INFO L226 Difference]: Without dead ends: 679 [2022-11-20 12:04:52,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:04:52,821 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 99 mSDsluCounter, 3968 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 4792 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:52,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 4792 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:04:52,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-11-20 12:04:52,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 676. [2022-11-20 12:04:52,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 396 states have (on average 1.2272727272727273) internal successors, (486), 400 states have internal predecessors, (486), 235 states have call successors, (235), 44 states have call predecessors, (235), 43 states have return successors, (265), 231 states have call predecessors, (265), 233 states have call successors, (265) [2022-11-20 12:04:52,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 986 transitions. [2022-11-20 12:04:52,877 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 986 transitions. Word has length 315 [2022-11-20 12:04:52,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:52,878 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 986 transitions. [2022-11-20 12:04:52,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2022-11-20 12:04:52,879 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 986 transitions. [2022-11-20 12:04:52,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-11-20 12:04:52,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:52,881 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 12:04:52,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:53,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 12:04:53,094 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:04:53,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:53,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1406110011, now seen corresponding path program 1 times [2022-11-20 12:04:53,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:53,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667863322] [2022-11-20 12:04:53,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:53,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:53,224 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:04:53,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1908715357] [2022-11-20 12:04:53,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:53,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:53,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:53,226 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:04:53,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 12:04:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:54,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 3626 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-20 12:04:54,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:54,405 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 286 proven. 3 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2022-11-20 12:04:54,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:04:54,766 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2022-11-20 12:04:54,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:54,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667863322] [2022-11-20 12:04:54,767 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:04:54,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908715357] [2022-11-20 12:04:54,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908715357] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:04:54,768 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:04:54,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2022-11-20 12:04:54,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745335622] [2022-11-20 12:04:54,769 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:04:54,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:04:54,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:54,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:04:54,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:04:54,771 INFO L87 Difference]: Start difference. First operand 676 states and 986 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 8 states have internal predecessors, (97), 5 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 5 states have call successors, (34) [2022-11-20 12:04:55,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:55,124 INFO L93 Difference]: Finished difference Result 1400 states and 2081 transitions. [2022-11-20 12:04:55,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:04:55,125 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 8 states have internal predecessors, (97), 5 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 5 states have call successors, (34) Word has length 315 [2022-11-20 12:04:55,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:55,132 INFO L225 Difference]: With dead ends: 1400 [2022-11-20 12:04:55,132 INFO L226 Difference]: Without dead ends: 828 [2022-11-20 12:04:55,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:04:55,139 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 141 mSDsluCounter, 6369 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 7191 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:55,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 7191 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:04:55,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2022-11-20 12:04:55,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 821. [2022-11-20 12:04:55,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 477 states have (on average 1.2389937106918238) internal successors, (591), 483 states have internal predecessors, (591), 296 states have call successors, (296), 46 states have call predecessors, (296), 46 states have return successors, (330), 291 states have call predecessors, (330), 294 states have call successors, (330) [2022-11-20 12:04:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1217 transitions. [2022-11-20 12:04:55,225 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1217 transitions. Word has length 315 [2022-11-20 12:04:55,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:55,226 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 1217 transitions. [2022-11-20 12:04:55,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 8 states have internal predecessors, (97), 5 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 5 states have call successors, (34) [2022-11-20 12:04:55,226 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1217 transitions. [2022-11-20 12:04:55,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-11-20 12:04:55,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:55,230 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 12:04:55,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:55,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:55,444 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:04:55,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:55,444 INFO L85 PathProgramCache]: Analyzing trace with hash -579642489, now seen corresponding path program 1 times [2022-11-20 12:04:55,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:55,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982108937] [2022-11-20 12:04:55,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:55,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:55,548 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:04:55,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621236751] [2022-11-20 12:04:55,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:55,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:55,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:55,551 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:04:55,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 12:04:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:56,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 3617 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 12:04:56,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:56,602 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-11-20 12:04:56,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:56,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:56,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982108937] [2022-11-20 12:04:56,603 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:04:56,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621236751] [2022-11-20 12:04:56,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621236751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:56,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:56,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:04:56,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880811906] [2022-11-20 12:04:56,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:56,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:04:56,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:56,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:04:56,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:04:56,606 INFO L87 Difference]: Start difference. First operand 821 states and 1217 transitions. Second operand has 5 states, 4 states have (on average 28.5) internal successors, (114), 5 states have internal predecessors, (114), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-20 12:04:57,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:57,058 INFO L93 Difference]: Finished difference Result 1286 states and 1894 transitions. [2022-11-20 12:04:57,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:04:57,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 28.5) internal successors, (114), 5 states have internal predecessors, (114), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) Word has length 315 [2022-11-20 12:04:57,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:57,065 INFO L225 Difference]: With dead ends: 1286 [2022-11-20 12:04:57,066 INFO L226 Difference]: Without dead ends: 683 [2022-11-20 12:04:57,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:04:57,071 INFO L413 NwaCegarLoop]: 708 mSDtfsCounter, 2 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:57,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2735 Invalid, 263 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:04:57,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-11-20 12:04:57,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-11-20 12:04:57,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 401 states have (on average 1.2169576059850373) internal successors, (488), 405 states have internal predecessors, (488), 236 states have call successors, (236), 44 states have call predecessors, (236), 44 states have return successors, (270), 233 states have call predecessors, (270), 234 states have call successors, (270) [2022-11-20 12:04:57,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 994 transitions. [2022-11-20 12:04:57,142 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 994 transitions. Word has length 315 [2022-11-20 12:04:57,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:57,143 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 994 transitions. [2022-11-20 12:04:57,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 28.5) internal successors, (114), 5 states have internal predecessors, (114), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-20 12:04:57,143 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 994 transitions. [2022-11-20 12:04:57,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-11-20 12:04:57,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:57,146 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 12:04:57,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:57,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 12:04:57,363 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:04:57,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:57,364 INFO L85 PathProgramCache]: Analyzing trace with hash -2138077437, now seen corresponding path program 1 times [2022-11-20 12:04:57,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:57,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508998606] [2022-11-20 12:04:57,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:57,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:57,476 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:04:57,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2132355339] [2022-11-20 12:04:57,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:57,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:57,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:57,479 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:04:57,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 12:04:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:58,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 3623 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:04:58,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-11-20 12:04:58,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:58,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:58,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508998606] [2022-11-20 12:04:58,644 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:04:58,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132355339] [2022-11-20 12:04:58,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132355339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:58,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:58,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:04:58,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287486722] [2022-11-20 12:04:58,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:58,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:04:58,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:58,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:04:58,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:04:58,647 INFO L87 Difference]: Start difference. First operand 683 states and 994 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2022-11-20 12:04:58,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:58,896 INFO L93 Difference]: Finished difference Result 1203 states and 1760 transitions. [2022-11-20 12:04:58,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:04:58,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 315 [2022-11-20 12:04:58,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:58,902 INFO L225 Difference]: With dead ends: 1203 [2022-11-20 12:04:58,903 INFO L226 Difference]: Without dead ends: 610 [2022-11-20 12:04:58,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:04:58,907 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 89 mSDsluCounter, 2797 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 3541 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:58,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 3541 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:04:58,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-11-20 12:04:58,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2022-11-20 12:04:58,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 360 states have (on average 1.2083333333333333) internal successors, (435), 364 states have internal predecessors, (435), 205 states have call successors, (205), 43 states have call predecessors, (205), 43 states have return successors, (237), 202 states have call predecessors, (237), 203 states have call successors, (237) [2022-11-20 12:04:58,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 877 transitions. [2022-11-20 12:04:58,957 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 877 transitions. Word has length 315 [2022-11-20 12:04:58,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:58,958 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 877 transitions. [2022-11-20 12:04:58,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2022-11-20 12:04:58,958 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 877 transitions. [2022-11-20 12:04:58,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-11-20 12:04:58,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:58,961 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 12:04:58,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:59,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 12:04:59,175 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:04:59,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:59,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1941119181, now seen corresponding path program 1 times [2022-11-20 12:04:59,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:59,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856094826] [2022-11-20 12:04:59,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:59,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:59,282 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:04:59,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2060051707] [2022-11-20 12:04:59,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:59,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:59,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:59,284 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:04:59,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 12:05:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:00,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 3661 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-20 12:05:00,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:00,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-11-20 12:05:00,662 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2022-11-20 12:05:00,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:00,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:00,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856094826] [2022-11-20 12:05:00,663 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:00,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060051707] [2022-11-20 12:05:00,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060051707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:00,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:00,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:05:00,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147258551] [2022-11-20 12:05:00,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:00,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:05:00,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:00,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:05:00,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:05:00,666 INFO L87 Difference]: Start difference. First operand 610 states and 877 transitions. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 6 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-11-20 12:05:02,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:02,483 INFO L93 Difference]: Finished difference Result 1202 states and 1807 transitions. [2022-11-20 12:05:02,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:05:02,484 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 6 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 326 [2022-11-20 12:05:02,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:02,490 INFO L225 Difference]: With dead ends: 1202 [2022-11-20 12:05:02,490 INFO L226 Difference]: Without dead ends: 661 [2022-11-20 12:05:02,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:05:02,495 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 100 mSDsluCounter, 5880 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 6583 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:02,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 6583 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 12:05:02,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-11-20 12:05:02,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 621. [2022-11-20 12:05:02,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 370 states have (on average 1.2081081081081082) internal successors, (447), 373 states have internal predecessors, (447), 205 states have call successors, (205), 43 states have call predecessors, (205), 44 states have return successors, (272), 204 states have call predecessors, (272), 203 states have call successors, (272) [2022-11-20 12:05:02,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 924 transitions. [2022-11-20 12:05:02,559 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 924 transitions. Word has length 326 [2022-11-20 12:05:02,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:02,559 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 924 transitions. [2022-11-20 12:05:02,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 6 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-11-20 12:05:02,560 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 924 transitions. [2022-11-20 12:05:02,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-11-20 12:05:02,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:02,563 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 12:05:02,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:02,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 12:05:02,778 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:02,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:02,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1133016179, now seen corresponding path program 1 times [2022-11-20 12:05:02,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:02,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655134733] [2022-11-20 12:05:02,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:02,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:02,882 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:02,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856063286] [2022-11-20 12:05:02,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:02,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:02,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:02,884 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:02,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 12:05:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:03,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 3667 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 12:05:03,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2022-11-20 12:05:03,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:03,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:03,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655134733] [2022-11-20 12:05:03,947 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:03,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856063286] [2022-11-20 12:05:03,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856063286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:03,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:03,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:05:03,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773024621] [2022-11-20 12:05:03,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:03,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:05:03,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:03,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:05:03,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:05:03,949 INFO L87 Difference]: Start difference. First operand 621 states and 924 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-20 12:05:04,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:04,029 INFO L93 Difference]: Finished difference Result 1193 states and 1820 transitions. [2022-11-20 12:05:04,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:05:04,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 326 [2022-11-20 12:05:04,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:04,034 INFO L225 Difference]: With dead ends: 1193 [2022-11-20 12:05:04,034 INFO L226 Difference]: Without dead ends: 641 [2022-11-20 12:05:04,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:05:04,038 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 8 mSDsluCounter, 2273 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:04,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 3040 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:05:04,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-11-20 12:05:04,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 629. [2022-11-20 12:05:04,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 378 states have (on average 1.2037037037037037) internal successors, (455), 381 states have internal predecessors, (455), 205 states have call successors, (205), 43 states have call predecessors, (205), 44 states have return successors, (272), 204 states have call predecessors, (272), 203 states have call successors, (272) [2022-11-20 12:05:04,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 932 transitions. [2022-11-20 12:05:04,093 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 932 transitions. Word has length 326 [2022-11-20 12:05:04,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:04,094 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 932 transitions. [2022-11-20 12:05:04,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-20 12:05:04,094 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 932 transitions. [2022-11-20 12:05:04,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-11-20 12:05:04,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:04,097 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 12:05:04,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:04,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:04,310 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:04,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:04,311 INFO L85 PathProgramCache]: Analyzing trace with hash -2079693939, now seen corresponding path program 1 times [2022-11-20 12:05:04,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:04,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794276714] [2022-11-20 12:05:04,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:04,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:04,399 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:04,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279602934] [2022-11-20 12:05:04,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:04,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:04,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:04,401 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:04,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 12:05:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:05,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 3651 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:05:05,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:05,387 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2022-11-20 12:05:05,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:05,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:05,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794276714] [2022-11-20 12:05:05,388 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:05,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279602934] [2022-11-20 12:05:05,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279602934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:05,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:05,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:05:05,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493705057] [2022-11-20 12:05:05,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:05,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:05:05,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:05,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:05:05,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:05:05,406 INFO L87 Difference]: Start difference. First operand 629 states and 932 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-20 12:05:05,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:05,475 INFO L93 Difference]: Finished difference Result 1189 states and 1850 transitions. [2022-11-20 12:05:05,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:05:05,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 326 [2022-11-20 12:05:05,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:05,481 INFO L225 Difference]: With dead ends: 1189 [2022-11-20 12:05:05,481 INFO L226 Difference]: Without dead ends: 629 [2022-11-20 12:05:05,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:05:05,486 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 7 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2236 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:05,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2236 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:05:05,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-11-20 12:05:05,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2022-11-20 12:05:05,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 378 states have (on average 1.2010582010582012) internal successors, (454), 381 states have internal predecessors, (454), 205 states have call successors, (205), 43 states have call predecessors, (205), 44 states have return successors, (272), 204 states have call predecessors, (272), 203 states have call successors, (272) [2022-11-20 12:05:05,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 931 transitions. [2022-11-20 12:05:05,536 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 931 transitions. Word has length 326 [2022-11-20 12:05:05,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:05,537 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 931 transitions. [2022-11-20 12:05:05,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-20 12:05:05,537 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 931 transitions. [2022-11-20 12:05:05,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-11-20 12:05:05,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:05,540 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 12:05:05,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:05,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:05,753 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:05,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:05,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1767486835, now seen corresponding path program 1 times [2022-11-20 12:05:05,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:05,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892589638] [2022-11-20 12:05:05,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:05,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:05,852 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:05,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [675587568] [2022-11-20 12:05:05,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:05,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:05,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:05,854 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:05,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-20 12:05:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:06,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 3661 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:05:06,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:07,004 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2022-11-20 12:05:07,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:07,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:07,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892589638] [2022-11-20 12:05:07,005 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:07,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675587568] [2022-11-20 12:05:07,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675587568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:07,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:07,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:05:07,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868535752] [2022-11-20 12:05:07,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:07,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:05:07,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:07,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:05:07,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:05:07,008 INFO L87 Difference]: Start difference. First operand 629 states and 931 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-20 12:05:07,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:07,510 INFO L93 Difference]: Finished difference Result 1189 states and 1848 transitions. [2022-11-20 12:05:07,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:05:07,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 330 [2022-11-20 12:05:07,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:07,515 INFO L225 Difference]: With dead ends: 1189 [2022-11-20 12:05:07,515 INFO L226 Difference]: Without dead ends: 629 [2022-11-20 12:05:07,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:05:07,520 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 10 mSDsluCounter, 2141 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2920 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:07,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2920 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:05:07,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-11-20 12:05:07,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2022-11-20 12:05:07,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 378 states have (on average 1.1984126984126984) internal successors, (453), 381 states have internal predecessors, (453), 205 states have call successors, (205), 43 states have call predecessors, (205), 44 states have return successors, (272), 204 states have call predecessors, (272), 203 states have call successors, (272) [2022-11-20 12:05:07,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 930 transitions. [2022-11-20 12:05:07,574 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 930 transitions. Word has length 330 [2022-11-20 12:05:07,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:07,575 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 930 transitions. [2022-11-20 12:05:07,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-20 12:05:07,575 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 930 transitions. [2022-11-20 12:05:07,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-11-20 12:05:07,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:07,578 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 12:05:07,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:07,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-20 12:05:07,792 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:07,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:07,792 INFO L85 PathProgramCache]: Analyzing trace with hash -481945779, now seen corresponding path program 1 times [2022-11-20 12:05:07,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:07,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966003626] [2022-11-20 12:05:07,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:07,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:07,879 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:07,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1509107587] [2022-11-20 12:05:07,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:07,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:07,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:07,881 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:07,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-20 12:05:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:09,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 3671 conjuncts, 177 conjunts are in the unsatisfiable core [2022-11-20 12:05:09,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:09,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:05:10,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:05:10,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:05:10,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:05:14,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:05:14,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:05:14,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:05:14,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:05:14,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:05:14,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:05:18,567 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4356 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4356) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_4355 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4355) |c_#memory_int|)) (exists ((v_ArrVal_4354 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4354) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-20 12:05:19,077 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4361 (Array Int Int)) (v_ArrVal_4360 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4358 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4360))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4361) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4358)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-20 12:05:19,510 WARN L859 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((v_ArrVal_4361 (Array Int Int)) (v_ArrVal_4360 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4358 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4358))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4360))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4361) |c_#memory_int|)))) is different from true [2022-11-20 12:05:21,150 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 335 proven. 17 refuted. 0 times theorem prover too weak. 351 trivial. 6 not checked. [2022-11-20 12:05:21,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:05:23,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:23,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966003626] [2022-11-20 12:05:23,274 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:23,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509107587] [2022-11-20 12:05:23,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509107587] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:05:23,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:05:23,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2022-11-20 12:05:23,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498890617] [2022-11-20 12:05:23,274 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:05:23,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-20 12:05:23,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:23,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-20 12:05:23,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1748, Unknown=16, NotChecked=258, Total=2162 [2022-11-20 12:05:23,277 INFO L87 Difference]: Start difference. First operand 629 states and 930 transitions. Second operand has 40 states, 36 states have (on average 4.111111111111111) internal successors, (148), 35 states have internal predecessors, (148), 13 states have call successors, (40), 8 states have call predecessors, (40), 12 states have return successors, (37), 12 states have call predecessors, (37), 13 states have call successors, (37) [2022-11-20 12:05:32,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:32,646 INFO L93 Difference]: Finished difference Result 1457 states and 2321 transitions. [2022-11-20 12:05:32,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 12:05:32,647 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 36 states have (on average 4.111111111111111) internal successors, (148), 35 states have internal predecessors, (148), 13 states have call successors, (40), 8 states have call predecessors, (40), 12 states have return successors, (37), 12 states have call predecessors, (37), 13 states have call successors, (37) Word has length 330 [2022-11-20 12:05:32,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:32,656 INFO L225 Difference]: With dead ends: 1457 [2022-11-20 12:05:32,656 INFO L226 Difference]: Without dead ends: 897 [2022-11-20 12:05:32,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 494 SyntacticMatches, 7 SemanticMatches, 60 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1096 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=230, Invalid=3164, Unknown=40, NotChecked=348, Total=3782 [2022-11-20 12:05:32,673 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 422 mSDsluCounter, 8890 mSDsCounter, 0 mSdLazyCounter, 6335 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 9619 SdHoareTripleChecker+Invalid, 18049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 6335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11159 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:32,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 9619 Invalid, 18049 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [555 Valid, 6335 Invalid, 0 Unknown, 11159 Unchecked, 7.4s Time] [2022-11-20 12:05:32,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-11-20 12:05:32,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 690. [2022-11-20 12:05:32,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 425 states have (on average 1.1952941176470588) internal successors, (508), 432 states have internal predecessors, (508), 209 states have call successors, (209), 47 states have call predecessors, (209), 54 states have return successors, (365), 210 states have call predecessors, (365), 207 states have call successors, (365) [2022-11-20 12:05:32,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1082 transitions. [2022-11-20 12:05:32,780 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1082 transitions. Word has length 330 [2022-11-20 12:05:32,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:32,780 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 1082 transitions. [2022-11-20 12:05:32,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 36 states have (on average 4.111111111111111) internal successors, (148), 35 states have internal predecessors, (148), 13 states have call successors, (40), 8 states have call predecessors, (40), 12 states have return successors, (37), 12 states have call predecessors, (37), 13 states have call successors, (37) [2022-11-20 12:05:32,781 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1082 transitions. [2022-11-20 12:05:32,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-11-20 12:05:32,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:32,785 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 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, 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] [2022-11-20 12:05:32,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:32,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-20 12:05:32,999 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:32,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:32,999 INFO L85 PathProgramCache]: Analyzing trace with hash -791865693, now seen corresponding path program 1 times [2022-11-20 12:05:32,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:33,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237408148] [2022-11-20 12:05:33,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:33,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:33,111 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:33,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1115675127] [2022-11-20 12:05:33,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:33,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:33,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:33,113 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:33,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-20 12:05:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:34,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 3727 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-20 12:05:34,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:34,394 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 239 proven. 1 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-11-20 12:05:34,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:05:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 86 proven. 13 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2022-11-20 12:05:35,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:35,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237408148] [2022-11-20 12:05:35,353 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:35,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115675127] [2022-11-20 12:05:35,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115675127] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:05:35,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:05:35,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 22 [2022-11-20 12:05:35,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285034831] [2022-11-20 12:05:35,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:05:35,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:05:35,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:35,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:05:35,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:05:35,356 INFO L87 Difference]: Start difference. First operand 690 states and 1082 transitions. Second operand has 22 states, 18 states have (on average 7.833333333333333) internal successors, (141), 15 states have internal predecessors, (141), 6 states have call successors, (42), 3 states have call predecessors, (42), 7 states have return successors, (42), 8 states have call predecessors, (42), 5 states have call successors, (42) [2022-11-20 12:05:36,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:36,647 INFO L93 Difference]: Finished difference Result 1282 states and 2091 transitions. [2022-11-20 12:05:36,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 12:05:36,649 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 7.833333333333333) internal successors, (141), 15 states have internal predecessors, (141), 6 states have call successors, (42), 3 states have call predecessors, (42), 7 states have return successors, (42), 8 states have call predecessors, (42), 5 states have call successors, (42) Word has length 356 [2022-11-20 12:05:36,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:36,656 INFO L225 Difference]: With dead ends: 1282 [2022-11-20 12:05:36,656 INFO L226 Difference]: Without dead ends: 703 [2022-11-20 12:05:36,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 686 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2022-11-20 12:05:36,661 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 13 mSDsluCounter, 13751 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 14495 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:36,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 14495 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 12:05:36,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2022-11-20 12:05:36,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 697. [2022-11-20 12:05:36,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 431 states have (on average 1.197215777262181) internal successors, (516), 439 states have internal predecessors, (516), 209 states have call successors, (209), 47 states have call predecessors, (209), 55 states have return successors, (397), 210 states have call predecessors, (397), 207 states have call successors, (397) [2022-11-20 12:05:36,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1122 transitions. [2022-11-20 12:05:36,754 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1122 transitions. Word has length 356 [2022-11-20 12:05:36,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:36,755 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 1122 transitions. [2022-11-20 12:05:36,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 7.833333333333333) internal successors, (141), 15 states have internal predecessors, (141), 6 states have call successors, (42), 3 states have call predecessors, (42), 7 states have return successors, (42), 8 states have call predecessors, (42), 5 states have call successors, (42) [2022-11-20 12:05:36,756 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1122 transitions. [2022-11-20 12:05:36,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-11-20 12:05:36,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:36,759 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 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, 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] [2022-11-20 12:05:36,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:36,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:36,974 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:36,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:36,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1859585043, now seen corresponding path program 1 times [2022-11-20 12:05:36,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:36,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157812958] [2022-11-20 12:05:36,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:36,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:37,074 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:37,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370294472] [2022-11-20 12:05:37,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:37,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:37,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:37,076 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:37,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-20 12:05:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:38,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 3714 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 12:05:38,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 418 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-11-20 12:05:38,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:38,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:38,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157812958] [2022-11-20 12:05:38,274 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:38,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370294472] [2022-11-20 12:05:38,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370294472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:38,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:38,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 12:05:38,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959510527] [2022-11-20 12:05:38,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:38,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:05:38,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:38,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:05:38,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:05:38,277 INFO L87 Difference]: Start difference. First operand 697 states and 1122 transitions. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 9 states have internal predecessors, (135), 2 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (36), 5 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-20 12:05:38,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:38,699 INFO L93 Difference]: Finished difference Result 1327 states and 2182 transitions. [2022-11-20 12:05:38,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:05:38,700 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 9 states have internal predecessors, (135), 2 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (36), 5 states have call predecessors, (36), 2 states have call successors, (36) Word has length 342 [2022-11-20 12:05:38,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:38,707 INFO L225 Difference]: With dead ends: 1327 [2022-11-20 12:05:38,708 INFO L226 Difference]: Without dead ends: 719 [2022-11-20 12:05:38,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:05:38,714 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 16 mSDsluCounter, 7760 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 8546 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:38,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 8546 Invalid, 167 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:05:38,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-11-20 12:05:38,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 697. [2022-11-20 12:05:38,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 432 states have (on average 1.1967592592592593) internal successors, (517), 437 states have internal predecessors, (517), 209 states have call successors, (209), 47 states have call predecessors, (209), 54 states have return successors, (363), 212 states have call predecessors, (363), 207 states have call successors, (363) [2022-11-20 12:05:38,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1089 transitions. [2022-11-20 12:05:38,833 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1089 transitions. Word has length 342 [2022-11-20 12:05:38,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:38,834 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 1089 transitions. [2022-11-20 12:05:38,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 9 states have internal predecessors, (135), 2 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (36), 5 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-20 12:05:38,835 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1089 transitions. [2022-11-20 12:05:38,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-20 12:05:38,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:38,839 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 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, 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] [2022-11-20 12:05:38,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-11-20 12:05:39,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:39,053 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:39,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:39,054 INFO L85 PathProgramCache]: Analyzing trace with hash 406581077, now seen corresponding path program 1 times [2022-11-20 12:05:39,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:39,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987214691] [2022-11-20 12:05:39,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:39,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:39,152 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:39,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [78834792] [2022-11-20 12:05:39,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:39,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:39,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:39,154 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:39,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-20 12:05:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:40,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 3684 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-20 12:05:40,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:40,336 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 368 proven. 1 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-11-20 12:05:40,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:05:41,220 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 91 proven. 35 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2022-11-20 12:05:41,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:41,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987214691] [2022-11-20 12:05:41,221 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:41,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78834792] [2022-11-20 12:05:41,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78834792] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:05:41,221 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:05:41,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18] total 24 [2022-11-20 12:05:41,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377580272] [2022-11-20 12:05:41,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:05:41,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 12:05:41,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:41,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 12:05:41,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2022-11-20 12:05:41,224 INFO L87 Difference]: Start difference. First operand 697 states and 1089 transitions. Second operand has 24 states, 20 states have (on average 7.2) internal successors, (144), 17 states have internal predecessors, (144), 6 states have call successors, (43), 3 states have call predecessors, (43), 8 states have return successors, (43), 8 states have call predecessors, (43), 5 states have call successors, (43) [2022-11-20 12:05:42,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:42,278 INFO L93 Difference]: Finished difference Result 1289 states and 2044 transitions. [2022-11-20 12:05:42,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:05:42,278 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 7.2) internal successors, (144), 17 states have internal predecessors, (144), 6 states have call successors, (43), 3 states have call predecessors, (43), 8 states have return successors, (43), 8 states have call predecessors, (43), 5 states have call successors, (43) Word has length 344 [2022-11-20 12:05:42,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:42,285 INFO L225 Difference]: With dead ends: 1289 [2022-11-20 12:05:42,285 INFO L226 Difference]: Without dead ends: 699 [2022-11-20 12:05:42,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 660 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-11-20 12:05:42,288 INFO L413 NwaCegarLoop]: 743 mSDtfsCounter, 12 mSDsluCounter, 13027 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 13770 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:42,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 13770 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 12:05:42,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-11-20 12:05:42,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 697. [2022-11-20 12:05:42,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 432 states have (on average 1.1967592592592593) internal successors, (517), 437 states have internal predecessors, (517), 209 states have call successors, (209), 47 states have call predecessors, (209), 54 states have return successors, (362), 212 states have call predecessors, (362), 207 states have call successors, (362) [2022-11-20 12:05:42,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1088 transitions. [2022-11-20 12:05:42,367 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1088 transitions. Word has length 344 [2022-11-20 12:05:42,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:42,368 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 1088 transitions. [2022-11-20 12:05:42,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 7.2) internal successors, (144), 17 states have internal predecessors, (144), 6 states have call successors, (43), 3 states have call predecessors, (43), 8 states have return successors, (43), 8 states have call predecessors, (43), 5 states have call successors, (43) [2022-11-20 12:05:42,368 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1088 transitions. [2022-11-20 12:05:42,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-11-20 12:05:42,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:42,371 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 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, 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] [2022-11-20 12:05:42,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:42,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-20 12:05:42,585 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:42,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:42,586 INFO L85 PathProgramCache]: Analyzing trace with hash 300258510, now seen corresponding path program 1 times [2022-11-20 12:05:42,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:42,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992126744] [2022-11-20 12:05:42,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:42,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:42,759 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:05:42,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1556590149] [2022-11-20 12:05:42,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:42,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:42,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:42,767 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:42,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-20 12:05:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:44,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 3715 conjuncts, 181 conjunts are in the unsatisfiable core [2022-11-20 12:05:44,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:44,422 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5417 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5417)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5416 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5416))))) is different from true [2022-11-20 12:05:44,444 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_5417 Int) (v_ArrVal_5416 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base|) 0 v_ArrVal_5416))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base|) 0 v_ArrVal_5417)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-20 12:05:44,528 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 12:05:44,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 42 [2022-11-20 12:05:44,558 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 12:05:44,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 36 [2022-11-20 12:05:45,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:05:45,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2022-11-20 12:05:45,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:05:45,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2022-11-20 12:05:45,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:05:45,828 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5425 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5425)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5424 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5424))))) is different from true [2022-11-20 12:05:56,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:05:56,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-11-20 12:05:56,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:05:56,711 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 445 proven. 52 refuted. 15 times theorem prover too weak. 186 trivial. 19 not checked. [2022-11-20 12:05:56,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:05:57,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:57,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992126744] [2022-11-20 12:05:57,363 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:05:57,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556590149] [2022-11-20 12:05:57,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556590149] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:05:57,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:05:57,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2022-11-20 12:05:57,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266660727] [2022-11-20 12:05:57,364 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:05:57,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 12:05:57,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:57,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 12:05:57,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=731, Unknown=8, NotChecked=168, Total=992 [2022-11-20 12:05:57,366 INFO L87 Difference]: Start difference. First operand 697 states and 1088 transitions. Second operand has 31 states, 27 states have (on average 6.111111111111111) internal successors, (165), 28 states have internal predecessors, (165), 15 states have call successors, (43), 6 states have call predecessors, (43), 10 states have return successors, (40), 13 states have call predecessors, (40), 15 states have call successors, (40) [2022-11-20 12:05:57,924 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|)) (.cse1 (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|))) (and (exists ((v_ArrVal_5417 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store .cse0 |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5417)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5425 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store .cse0 |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5425)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5424 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store .cse1 |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5424)))) (exists ((v_ArrVal_5416 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store .cse1 |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5416)))))) is different from true [2022-11-20 12:06:12,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:12,116 INFO L93 Difference]: Finished difference Result 1836 states and 3038 transitions. [2022-11-20 12:06:12,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 12:06:12,117 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 6.111111111111111) internal successors, (165), 28 states have internal predecessors, (165), 15 states have call successors, (43), 6 states have call predecessors, (43), 10 states have return successors, (40), 13 states have call predecessors, (40), 15 states have call successors, (40) Word has length 338 [2022-11-20 12:06:12,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:12,127 INFO L225 Difference]: With dead ends: 1836 [2022-11-20 12:06:12,127 INFO L226 Difference]: Without dead ends: 1240 [2022-11-20 12:06:12,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 411 SyntacticMatches, 8 SemanticMatches, 48 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=213, Invalid=1864, Unknown=9, NotChecked=364, Total=2450 [2022-11-20 12:06:12,132 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 498 mSDsluCounter, 8916 mSDsCounter, 0 mSdLazyCounter, 9906 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 9716 SdHoareTripleChecker+Invalid, 19888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 9906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9626 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:12,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 9716 Invalid, 19888 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [356 Valid, 9906 Invalid, 0 Unknown, 9626 Unchecked, 11.2s Time] [2022-11-20 12:06:12,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-20 12:06:12,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 805. [2022-11-20 12:06:12,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 515 states have (on average 1.1902912621359223) internal successors, (613), 524 states have internal predecessors, (613), 221 states have call successors, (221), 54 states have call predecessors, (221), 67 states have return successors, (428), 226 states have call predecessors, (428), 219 states have call successors, (428) [2022-11-20 12:06:12,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1262 transitions. [2022-11-20 12:06:12,256 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1262 transitions. Word has length 338 [2022-11-20 12:06:12,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:12,257 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1262 transitions. [2022-11-20 12:06:12,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 6.111111111111111) internal successors, (165), 28 states have internal predecessors, (165), 15 states have call successors, (43), 6 states have call predecessors, (43), 10 states have return successors, (40), 13 states have call predecessors, (40), 15 states have call successors, (40) [2022-11-20 12:06:12,257 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1262 transitions. [2022-11-20 12:06:12,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-11-20 12:06:12,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:12,262 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 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, 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, 1, 1, 1, 1] [2022-11-20 12:06:12,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:12,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-20 12:06:12,477 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:12,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:12,477 INFO L85 PathProgramCache]: Analyzing trace with hash 104115798, now seen corresponding path program 1 times [2022-11-20 12:06:12,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:12,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108900465] [2022-11-20 12:06:12,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:12,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:12,562 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:06:12,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2080985209] [2022-11-20 12:06:12,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:12,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:06:12,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:06:12,564 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:06:12,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-20 12:06:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:13,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 3740 conjuncts, 151 conjunts are in the unsatisfiable core [2022-11-20 12:06:13,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:14,059 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5728 Int) (v_ArrVal_5726 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5726)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5728))))) is different from true [2022-11-20 12:06:14,080 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5728 Int) (v_ArrVal_5726 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_5728)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_5726))))) is different from true [2022-11-20 12:06:14,145 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 12:06:14,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 42 [2022-11-20 12:06:14,172 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 12:06:14,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 36 [2022-11-20 12:06:15,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-20 12:06:15,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-20 12:06:15,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:06:15,410 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5735 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5735)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5737 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5737))))) is different from true [2022-11-20 12:06:30,474 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 447 proven. 50 refuted. 13 times theorem prover too weak. 184 trivial. 19 not checked. [2022-11-20 12:06:30,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:06:31,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:31,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108900465] [2022-11-20 12:06:31,172 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:06:31,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080985209] [2022-11-20 12:06:31,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080985209] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:06:31,172 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:06:31,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2022-11-20 12:06:31,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464613835] [2022-11-20 12:06:31,172 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:06:31,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-20 12:06:31,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:31,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-20 12:06:31,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=840, Unknown=10, NotChecked=180, Total=1122 [2022-11-20 12:06:31,174 INFO L87 Difference]: Start difference. First operand 805 states and 1262 transitions. Second operand has 33 states, 30 states have (on average 5.633333333333334) internal successors, (169), 29 states have internal predecessors, (169), 16 states have call successors, (45), 6 states have call predecessors, (45), 10 states have return successors, (42), 14 states have call predecessors, (42), 16 states have call successors, (42) [2022-11-20 12:06:31,772 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5735 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5735)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5728 Int) (v_ArrVal_5726 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5726)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5728))))) (exists ((v_ArrVal_5737 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5737))))) is different from true [2022-11-20 12:06:44,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:44,289 INFO L93 Difference]: Finished difference Result 1878 states and 3105 transitions. [2022-11-20 12:06:44,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 12:06:44,290 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 5.633333333333334) internal successors, (169), 29 states have internal predecessors, (169), 16 states have call successors, (45), 6 states have call predecessors, (45), 10 states have return successors, (42), 14 states have call predecessors, (42), 16 states have call successors, (42) Word has length 343 [2022-11-20 12:06:44,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:44,299 INFO L225 Difference]: With dead ends: 1878 [2022-11-20 12:06:44,299 INFO L226 Difference]: Without dead ends: 1213 [2022-11-20 12:06:44,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 411 SyntacticMatches, 9 SemanticMatches, 38 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=124, Invalid=1141, Unknown=11, NotChecked=284, Total=1560 [2022-11-20 12:06:44,304 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 359 mSDsluCounter, 7425 mSDsCounter, 0 mSdLazyCounter, 7756 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 8179 SdHoareTripleChecker+Invalid, 14701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 7756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6665 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:44,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 8179 Invalid, 14701 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [280 Valid, 7756 Invalid, 0 Unknown, 6665 Unchecked, 8.4s Time] [2022-11-20 12:06:44,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2022-11-20 12:06:44,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 928. [2022-11-20 12:06:44,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 612 states have (on average 1.184640522875817) internal successors, (725), 623 states have internal predecessors, (725), 234 states have call successors, (234), 61 states have call predecessors, (234), 80 states have return successors, (507), 243 states have call predecessors, (507), 232 states have call successors, (507) [2022-11-20 12:06:44,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1466 transitions. [2022-11-20 12:06:44,447 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1466 transitions. Word has length 343 [2022-11-20 12:06:44,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:44,448 INFO L495 AbstractCegarLoop]: Abstraction has 928 states and 1466 transitions. [2022-11-20 12:06:44,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 5.633333333333334) internal successors, (169), 29 states have internal predecessors, (169), 16 states have call successors, (45), 6 states have call predecessors, (45), 10 states have return successors, (42), 14 states have call predecessors, (42), 16 states have call successors, (42) [2022-11-20 12:06:44,448 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1466 transitions. [2022-11-20 12:06:44,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2022-11-20 12:06:44,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:44,453 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 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, 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] [2022-11-20 12:06:44,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:44,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-20 12:06:44,668 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:44,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:44,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1993367545, now seen corresponding path program 2 times [2022-11-20 12:06:44,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:44,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2264388] [2022-11-20 12:06:44,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:44,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:44,741 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:06:44,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1209142108] [2022-11-20 12:06:44,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:06:44,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:06:44,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:06:44,743 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:06:44,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c54e7ab-988d-4108-a85b-af991f57d9f0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-20 12:06:46,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:06:46,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:06:46,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 3676 conjuncts, 254 conjunts are in the unsatisfiable core [2022-11-20 12:06:46,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:46,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:06:46,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:06:46,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:06:46,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 12:06:47,051 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6019 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_6019) |c_#memory_$Pointer$.offset|)) is different from true [2022-11-20 12:06:48,056 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6021 Int) (v_ArrVal_6020 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6022 Int)) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6021)) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6020)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6022))))) is different from true [2022-11-20 12:06:48,099 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6021 Int) (v_ArrVal_6020 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6022 Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6021))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6020)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6022))))) is different from true [2022-11-20 12:06:48,233 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 12:06:48,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 53 [2022-11-20 12:06:48,275 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 12:06:48,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 33 [2022-11-20 12:06:50,132 WARN L859 $PredicateComparison]: unable to prove that (and (not |c_aws_priority_queue_is_valid_aws_priority_queue_backpointers_valid_#t~short862#1|) (let ((.cse4 (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|))) (let ((.cse8 (= |c_aws_priority_queue_is_valid_~container_is_valid~0#1| 0)) (.cse2 (= |c_aws_priority_queue_is_valid_~container_is_valid~0#1| 1)) (.cse5 (not (= (select (select |c_#memory_$Pointer$.base| |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse4) 0))) (.cse7 (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_6019 (Array Int Int)) (v_ArrVal_6022 Int)) (and (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0) (= (let ((.cse12 (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_6019))) (store .cse12 |c_aws_priority_queue_is_valid_#in~queue#1.base| (store (select .cse12 |c_aws_priority_queue_is_valid_#in~queue#1.base|) 0 v_ArrVal_6022))) |c_#memory_$Pointer$.offset|)))) (.cse1 (+ |c_aws_priority_queue_is_valid_#in~queue#1.offset| 16))) (or (and (let ((.cse0 (select (select |c_#memory_int| |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1))) (<= (+ (* (div .cse0 18446744073709551616) 18446744073709551616) 1) .cse0)) (let ((.cse6 (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6019 (Array Int Int)) (v_ArrVal_6022 Int)) (and (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0) (= (let ((.cse9 (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_6019))) (store .cse9 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select .cse9 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6022))) |c_#memory_$Pointer$.offset|))))) (or (and .cse2 (or (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6019 (Array Int Int)) (v_ArrVal_6022 Int)) (let ((.cse3 (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_6019))) (and (not (= (select (select .cse3 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse4) 0)) (= (store .cse3 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select .cse3 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6022)) |c_#memory_$Pointer$.offset|)))) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0))) (and .cse5 .cse6))) (and .cse2 .cse7 (= .cse4 0)) (and .cse6 .cse8)))) (and (or (and .cse8 .cse7) (and .cse2 (or (and .cse5 .cse7) (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (exists ((v_ArrVal_6019 (Array Int Int)) (v_ArrVal_6022 Int)) (let ((.cse11 (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_6019))) (let ((.cse10 (select .cse11 |c_aws_priority_queue_is_valid_#in~queue#1.base|))) (and (not (= (select .cse10 .cse4) 0)) (= (store .cse11 |c_aws_priority_queue_is_valid_#in~queue#1.base| (store .cse10 0 v_ArrVal_6022)) |c_#memory_$Pointer$.offset|))))) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0)))))) (= .cse1 0)))))) is different from true [2022-11-20 12:06:55,052 INFO L321 Elim1Store]: treesize reduction 654, result has 24.4 percent of original size [2022-11-20 12:06:55,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 10 new quantified variables, introduced 30 case distinctions, treesize of input 184 treesize of output 723 [2022-11-20 12:06:55,395 INFO L217 Elim1Store]: Index analysis took 252 ms [2022-11-20 12:06:55,681 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:06:55,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 120 treesize of output 160 [2022-11-20 12:07:04,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:07:04,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:07:04,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:07:05,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:07:09,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:07:12,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 29 [2022-11-20 12:07:12,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:07:15,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 29