./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_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_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/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_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/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_f610827a-9dc9-4484-93a0-613cb0823ef1/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 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e --- 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 12:14:41,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:14:41,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:14:41,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:14:41,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:14:41,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:14:41,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:14:41,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:14:41,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:14:41,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:14:41,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:14:41,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:14:41,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:14:41,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:14:41,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:14:41,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:14:41,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:14:41,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:14:41,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:14:41,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:14:41,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:14:41,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:14:41,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:14:41,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:14:41,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:14:41,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:14:41,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:14:41,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:14:41,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:14:41,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:14:41,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:14:41,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:14:41,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:14:41,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:14:41,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:14:41,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:14:41,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:14:41,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:14:41,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:14:41,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:14:41,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:14:41,742 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 12:14:41,765 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:14:41,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:14:41,765 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:14:41,766 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:14:41,766 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:14:41,767 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:14:41,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:14:41,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:14:41,768 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:14:41,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:14:41,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:14:41,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:14:41,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:14:41,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:14:41,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:14:41,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:14:41,769 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:14:41,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:14:41,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:14:41,770 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:14:41,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:14:41,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:14:41,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:14:41,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:14:41,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:14:41,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:14:41,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:14:41,771 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:14:41,771 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:14:41,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:14:41,772 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_f610827a-9dc9-4484-93a0-613cb0823ef1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e [2022-11-20 12:14:42,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:14:42,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:14:42,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:14:42,187 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:14:42,190 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:14:42,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2022-11-20 12:14:45,407 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:14:46,175 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:14:46,175 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2022-11-20 12:14:46,217 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/data/dd2c1fee2/e62346c13fd8478386b4ae8464487b4d/FLAG5ae5d8495 [2022-11-20 12:14:46,233 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/data/dd2c1fee2/e62346c13fd8478386b4ae8464487b4d [2022-11-20 12:14:46,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:14:46,238 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:14:46,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:14:46,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:14:46,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:14:46,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:14:46" (1/1) ... [2022-11-20 12:14:46,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@411d9e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:46, skipping insertion in model container [2022-11-20 12:14:46,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:14:46" (1/1) ... [2022-11-20 12:14:46,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:14:46,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:14:46,693 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_f610827a-9dc9-4484-93a0-613cb0823ef1/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2022-11-20 12:14:46,703 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_f610827a-9dc9-4484-93a0-613cb0823ef1/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2022-11-20 12:14:47,734 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:47,735 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:47,735 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:47,737 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:47,738 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:47,760 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:47,761 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:47,765 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:47,766 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:47,770 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:47,772 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:47,773 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:47,773 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,281 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 12:14:48,283 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 12:14:48,284 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 12:14:48,286 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 12:14:48,288 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 12:14:48,289 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 12:14:48,290 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 12:14:48,301 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 12:14:48,302 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 12:14:48,303 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 12:14:48,566 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 12:14:48,624 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,632 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,703 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,704 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,705 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,705 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,706 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,706 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,707 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,708 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,708 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,709 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,709 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,710 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,710 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,714 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,715 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,715 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,716 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,720 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,720 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,730 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,731 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,769 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,797 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,798 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,798 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:14:48,854 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:14:48,869 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_f610827a-9dc9-4484-93a0-613cb0823ef1/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2022-11-20 12:14:48,869 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_f610827a-9dc9-4484-93a0-613cb0823ef1/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2022-11-20 12:14:48,912 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,912 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,913 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,913 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,914 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,921 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,922 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,923 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,924 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,925 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,926 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,926 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,927 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:48,966 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 12:14:48,967 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 12:14:48,968 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 12:14:48,969 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 12:14:48,970 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 12:14:48,971 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 12:14:48,971 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 12:14:48,972 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 12:14:48,973 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 12:14:48,973 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 12:14:48,999 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 12:14:49,017 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,023 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,051 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,052 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,053 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,053 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,053 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,054 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,054 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,055 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,055 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,056 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,056 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,056 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,057 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,058 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,058 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,058 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,059 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,062 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,062 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,070 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,071 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,071 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,078 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,078 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,079 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:14:49,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:14:49,289 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:14:49,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:49 WrapperNode [2022-11-20 12:14:49,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:14:49,291 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:14:49,291 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:14:49,291 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:14:49,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:49" (1/1) ... [2022-11-20 12:14:49,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:49" (1/1) ... [2022-11-20 12:14:49,581 INFO L138 Inliner]: procedures = 697, calls = 1920, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1059 [2022-11-20 12:14:49,582 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:14:49,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:14:49,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:14:49,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:14:49,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:49" (1/1) ... [2022-11-20 12:14:49,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:49" (1/1) ... [2022-11-20 12:14:49,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:49" (1/1) ... [2022-11-20 12:14:49,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:49" (1/1) ... [2022-11-20 12:14:49,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:49" (1/1) ... [2022-11-20 12:14:49,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:49" (1/1) ... [2022-11-20 12:14:49,738 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:49" (1/1) ... [2022-11-20 12:14:49,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:49" (1/1) ... [2022-11-20 12:14:49,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:14:49,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:14:49,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:14:49,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:14:49,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:49" (1/1) ... [2022-11-20 12:14:49,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:14:49,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:14:49,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:14:49,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:14:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-11-20 12:14:49,870 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-11-20 12:14:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-20 12:14:49,871 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-20 12:14:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:14:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-20 12:14:49,871 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-20 12:14:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-20 12:14:49,871 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-20 12:14:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-20 12:14:49,872 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-20 12:14:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2022-11-20 12:14:49,872 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2022-11-20 12:14:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 12:14:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:14:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-20 12:14:49,878 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-20 12:14:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 12:14:49,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 12:14:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2022-11-20 12:14:49,879 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2022-11-20 12:14:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:14:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:14:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:14:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2022-11-20 12:14:49,886 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2022-11-20 12:14:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-20 12:14:49,886 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-20 12:14:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:14:49,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:14:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-20 12:14:49,887 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-20 12:14:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-20 12:14:49,887 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-20 12:14:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 12:14:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-20 12:14:49,887 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-20 12:14:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-20 12:14:49,888 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-20 12:14:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-20 12:14:49,888 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-20 12:14:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 12:14:49,888 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 12:14:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 12:14:49,889 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 12:14:49,889 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-20 12:14:49,889 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-20 12:14:49,889 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2022-11-20 12:14:49,889 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2022-11-20 12:14:49,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:14:49,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:14:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:14:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-11-20 12:14:49,891 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-11-20 12:14:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-20 12:14:49,892 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-20 12:14:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-20 12:14:49,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-20 12:14:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:14:49,893 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-20 12:14:49,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-20 12:14:49,894 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-11-20 12:14:49,894 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-11-20 12:14:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 12:14:49,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 12:14:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:14:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2022-11-20 12:14:49,896 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2022-11-20 12:14:50,392 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:14:50,396 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:14:52,864 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:14:52,877 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:14:52,877 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-20 12:14:52,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:14:52 BoogieIcfgContainer [2022-11-20 12:14:52,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:14:52,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:14:52,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:14:52,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:14:52,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:14:46" (1/3) ... [2022-11-20 12:14:52,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c376d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:14:52, skipping insertion in model container [2022-11-20 12:14:52,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:49" (2/3) ... [2022-11-20 12:14:52,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c376d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:14:52, skipping insertion in model container [2022-11-20 12:14:52,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:14:52" (3/3) ... [2022-11-20 12:14:52,893 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_remove_harness.i [2022-11-20 12:14:52,916 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:14:52,917 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 12:14:52,988 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:14:52,996 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;@52b1cb48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:14:52,996 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 12:14:53,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 452 states, 262 states have (on average 1.2633587786259541) internal successors, (331), 267 states have internal predecessors, (331), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2022-11-20 12:14:53,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-20 12:14:53,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:53,023 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 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] [2022-11-20 12:14:53,024 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:53,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:53,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1932124763, now seen corresponding path program 1 times [2022-11-20 12:14:53,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:14:53,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337552593] [2022-11-20 12:14:53,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:53,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:14:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:53,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:14:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:53,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:14:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:53,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:14:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:53,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:14:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:53,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:14:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:53,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:14:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:54,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:14:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:54,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:14:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:54,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:14:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:54,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 12:14:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:54,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 12:14:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:54,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 12:14:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:54,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:14:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:54,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:14:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:54,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:14:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:54,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 12:14:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:54,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-20 12:14:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:54,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-20 12:14:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:54,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-20 12:14:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:54,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 12:14:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:54,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-20 12:14:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:54,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-20 12:14:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:54,366 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-20 12:14:54,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:14:54,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337552593] [2022-11-20 12:14:54,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337552593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:14:54,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:14:54,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:14:54,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450063071] [2022-11-20 12:14:54,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:14:54,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:14:54,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:14:54,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:14:54,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:14:54,419 INFO L87 Difference]: Start difference. First operand has 452 states, 262 states have (on average 1.2633587786259541) internal successors, (331), 267 states have internal predecessors, (331), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 12:14:59,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:59,576 INFO L93 Difference]: Finished difference Result 1325 states and 2472 transitions. [2022-11-20 12:14:59,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:14:59,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 141 [2022-11-20 12:14:59,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:59,628 INFO L225 Difference]: With dead ends: 1325 [2022-11-20 12:14:59,628 INFO L226 Difference]: Without dead ends: 879 [2022-11-20 12:14:59,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:14:59,645 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 530 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 686 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:59,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 1674 Invalid, 2098 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [686 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-20 12:14:59,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2022-11-20 12:14:59,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 445. [2022-11-20 12:14:59,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 257 states have (on average 1.2256809338521402) internal successors, (315), 260 states have internal predecessors, (315), 160 states have call successors, (160), 27 states have call predecessors, (160), 26 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) [2022-11-20 12:14:59,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 633 transitions. [2022-11-20 12:14:59,788 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 633 transitions. Word has length 141 [2022-11-20 12:14:59,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:59,789 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 633 transitions. [2022-11-20 12:14:59,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 12:14:59,789 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 633 transitions. [2022-11-20 12:14:59,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-20 12:14:59,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:59,794 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:14:59,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:14:59,794 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:59,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:59,795 INFO L85 PathProgramCache]: Analyzing trace with hash 2121876974, now seen corresponding path program 1 times [2022-11-20 12:14:59,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:14:59,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112513716] [2022-11-20 12:14:59,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:59,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:14:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:15:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:15:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:15:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:15:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:15:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:15:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:15:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:15:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:15:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 12:15:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 12:15:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 12:15:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:15:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:15:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:15:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 12:15:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-20 12:15:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-20 12:15:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-20 12:15:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 12:15:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-20 12:15:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 12:15:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-20 12:15:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-20 12:15:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-20 12:15:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:00,751 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-11-20 12:15:00,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:00,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112513716] [2022-11-20 12:15:00,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112513716] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:15:00,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975446691] [2022-11-20 12:15:00,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:00,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:00,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:00,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:00,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:15:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:01,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 2500 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:15:01,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:01,657 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-20 12:15:01,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:01,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975446691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:01,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:15:01,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-20 12:15:01,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449117807] [2022-11-20 12:15:01,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:01,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:15:01,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:01,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:15:01,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:15:01,662 INFO L87 Difference]: Start difference. First operand 445 states and 633 transitions. 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, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-20 12:15:03,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:15:04,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:04,501 INFO L93 Difference]: Finished difference Result 856 states and 1235 transitions. [2022-11-20 12:15:04,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:15:04,502 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, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 156 [2022-11-20 12:15:04,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:04,507 INFO L225 Difference]: With dead ends: 856 [2022-11-20 12:15:04,507 INFO L226 Difference]: Without dead ends: 447 [2022-11-20 12:15:04,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:15:04,512 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 653 mSDsluCounter, 1615 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:04,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 2184 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-20 12:15:04,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-11-20 12:15:04,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2022-11-20 12:15:04,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 258 states have (on average 1.2248062015503876) internal successors, (316), 262 states have internal predecessors, (316), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (171), 158 states have call predecessors, (171), 158 states have call successors, (171) [2022-11-20 12:15:04,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 647 transitions. [2022-11-20 12:15:04,580 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 647 transitions. Word has length 156 [2022-11-20 12:15:04,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:04,581 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 647 transitions. [2022-11-20 12:15:04,582 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, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-20 12:15:04,582 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 647 transitions. [2022-11-20 12:15:04,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-20 12:15:04,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:04,585 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:04,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 12:15:04,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-20 12:15:04,803 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:04,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:04,804 INFO L85 PathProgramCache]: Analyzing trace with hash 993285582, now seen corresponding path program 1 times [2022-11-20 12:15:04,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:04,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24132819] [2022-11-20 12:15:04,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:04,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:15:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:15:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:15:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:15:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:15:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:15:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:15:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:15:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:15:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 12:15:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:15:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 12:15:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 12:15:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:15:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 12:15:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:15:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 12:15:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-20 12:15:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-20 12:15:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-20 12:15:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 12:15:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-20 12:15:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-20 12:15:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-20 12:15:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-20 12:15:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-20 12:15:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:05,958 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2022-11-20 12:15:05,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:05,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24132819] [2022-11-20 12:15:05,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24132819] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:15:05,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680901784] [2022-11-20 12:15:05,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:05,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:05,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:05,967 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:05,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:15:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:06,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 2550 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:15:06,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:07,003 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-20 12:15:07,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:07,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680901784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:07,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:15:07,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-20 12:15:07,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112621383] [2022-11-20 12:15:07,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:07,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:15:07,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:07,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:15:07,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:15:07,007 INFO L87 Difference]: Start difference. First operand 447 states and 647 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, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-20 12:15:10,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:10,315 INFO L93 Difference]: Finished difference Result 879 states and 1306 transitions. [2022-11-20 12:15:10,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:15:10,316 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, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 164 [2022-11-20 12:15:10,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:10,325 INFO L225 Difference]: With dead ends: 879 [2022-11-20 12:15:10,325 INFO L226 Difference]: Without dead ends: 468 [2022-11-20 12:15:10,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:15:10,339 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 679 mSDsluCounter, 2657 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 3222 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:10,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 3222 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-20 12:15:10,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-11-20 12:15:10,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 466. [2022-11-20 12:15:10,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 274 states have (on average 1.2335766423357664) internal successors, (338), 278 states have internal predecessors, (338), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2022-11-20 12:15:10,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 690 transitions. [2022-11-20 12:15:10,425 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 690 transitions. Word has length 164 [2022-11-20 12:15:10,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:10,426 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 690 transitions. [2022-11-20 12:15:10,427 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, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-20 12:15:10,428 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 690 transitions. [2022-11-20 12:15:10,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-20 12:15:10,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:10,436 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:10,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:10,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:10,647 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:10,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:10,648 INFO L85 PathProgramCache]: Analyzing trace with hash -420435888, now seen corresponding path program 1 times [2022-11-20 12:15:10,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:10,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944062600] [2022-11-20 12:15:10,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:10,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:10,748 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:15:10,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [88242377] [2022-11-20 12:15:10,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:10,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:10,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:10,750 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:10,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:15:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:11,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 2691 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:15:11,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:11,664 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-20 12:15:11,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:11,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:11,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944062600] [2022-11-20 12:15:11,665 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:15:11,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88242377] [2022-11-20 12:15:11,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88242377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:11,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:11,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:15:11,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528573249] [2022-11-20 12:15:11,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:11,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:15:11,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:11,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:15:11,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:15:11,668 INFO L87 Difference]: Start difference. First operand 466 states and 690 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, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-20 12:15:13,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:15:15,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:15:16,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:16,915 INFO L93 Difference]: Finished difference Result 904 states and 1379 transitions. [2022-11-20 12:15:16,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:15:16,916 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, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 179 [2022-11-20 12:15:16,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:16,923 INFO L225 Difference]: With dead ends: 904 [2022-11-20 12:15:16,923 INFO L226 Difference]: Without dead ends: 474 [2022-11-20 12:15:16,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 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 12:15:16,933 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 677 mSDsluCounter, 2126 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:16,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 2689 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-20 12:15:16,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-11-20 12:15:16,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 466. [2022-11-20 12:15:16,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 274 states have (on average 1.2335766423357664) internal successors, (338), 278 states have internal predecessors, (338), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2022-11-20 12:15:16,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 690 transitions. [2022-11-20 12:15:16,976 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 690 transitions. Word has length 179 [2022-11-20 12:15:16,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:16,977 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 690 transitions. [2022-11-20 12:15:16,977 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, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-20 12:15:16,977 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 690 transitions. [2022-11-20 12:15:16,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-20 12:15:16,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:16,981 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:16,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:17,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:17,192 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:17,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:17,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2131846081, now seen corresponding path program 1 times [2022-11-20 12:15:17,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:17,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814493474] [2022-11-20 12:15:17,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:17,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:17,281 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:15:17,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1605978737] [2022-11-20 12:15:17,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:17,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:17,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:17,283 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:17,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:15:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:18,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 2763 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:15:18,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:18,195 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-20 12:15:18,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:18,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:18,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814493474] [2022-11-20 12:15:18,196 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:15:18,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605978737] [2022-11-20 12:15:18,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605978737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:18,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:18,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:15:18,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038000774] [2022-11-20 12:15:18,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:18,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:15:18,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:18,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:15:18,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:15:18,199 INFO L87 Difference]: Start difference. First operand 466 states and 690 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, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2022-11-20 12:15:21,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:15:23,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:23,064 INFO L93 Difference]: Finished difference Result 914 states and 1383 transitions. [2022-11-20 12:15:23,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:15:23,065 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, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 195 [2022-11-20 12:15:23,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:23,072 INFO L225 Difference]: With dead ends: 914 [2022-11-20 12:15:23,072 INFO L226 Difference]: Without dead ends: 484 [2022-11-20 12:15:23,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:15:23,077 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 742 mSDsluCounter, 3080 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 3622 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:23,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 3622 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-20 12:15:23,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-11-20 12:15:23,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 466. [2022-11-20 12:15:23,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 274 states have (on average 1.2335766423357664) internal successors, (338), 278 states have internal predecessors, (338), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2022-11-20 12:15:23,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 690 transitions. [2022-11-20 12:15:23,114 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 690 transitions. Word has length 195 [2022-11-20 12:15:23,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:23,114 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 690 transitions. [2022-11-20 12:15:23,115 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, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2022-11-20 12:15:23,115 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 690 transitions. [2022-11-20 12:15:23,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-20 12:15:23,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:23,120 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:23,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:23,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:23,333 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:23,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:23,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1941826145, now seen corresponding path program 2 times [2022-11-20 12:15:23,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:23,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316661026] [2022-11-20 12:15:23,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:23,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:23,442 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:15:23,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [93948920] [2022-11-20 12:15:23,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:15:23,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:23,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:23,444 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:23,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:15:24,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:15:24,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:15:24,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 2904 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:15:24,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:24,335 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-20 12:15:24,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:24,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:24,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316661026] [2022-11-20 12:15:24,336 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:15:24,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93948920] [2022-11-20 12:15:24,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93948920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:24,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:24,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:15:24,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032146221] [2022-11-20 12:15:24,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:24,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:15:24,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:24,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:15:24,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:15:24,339 INFO L87 Difference]: Start difference. First operand 466 states and 690 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-20 12:15:27,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:15:27,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:27,780 INFO L93 Difference]: Finished difference Result 862 states and 1297 transitions. [2022-11-20 12:15:27,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:15:27,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 210 [2022-11-20 12:15:27,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:27,786 INFO L225 Difference]: With dead ends: 862 [2022-11-20 12:15:27,786 INFO L226 Difference]: Without dead ends: 468 [2022-11-20 12:15:27,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:15:27,791 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 670 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 2711 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:27,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 2711 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-20 12:15:27,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-11-20 12:15:27,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 468. [2022-11-20 12:15:27,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 275 states have (on average 1.2327272727272727) internal successors, (339), 280 states have internal predecessors, (339), 162 states have call successors, (162), 27 states have call predecessors, (162), 29 states have return successors, (201), 161 states have call predecessors, (201), 160 states have call successors, (201) [2022-11-20 12:15:27,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 702 transitions. [2022-11-20 12:15:27,829 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 702 transitions. Word has length 210 [2022-11-20 12:15:27,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:27,829 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 702 transitions. [2022-11-20 12:15:27,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-20 12:15:27,830 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 702 transitions. [2022-11-20 12:15:27,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-20 12:15:27,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:27,834 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:27,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:28,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 12:15:28,048 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:28,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:28,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1068968295, now seen corresponding path program 1 times [2022-11-20 12:15:28,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:28,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532303176] [2022-11-20 12:15:28,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:28,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:28,160 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:15:28,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573451860] [2022-11-20 12:15:28,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:28,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:28,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:28,162 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:28,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:15:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:29,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 3095 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:15:29,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:29,162 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-11-20 12:15:29,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:29,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:29,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532303176] [2022-11-20 12:15:29,163 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:15:29,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573451860] [2022-11-20 12:15:29,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573451860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:29,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:29,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:15:29,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025328559] [2022-11-20 12:15:29,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:29,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:15:29,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:29,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:15:29,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:15:29,166 INFO L87 Difference]: Start difference. First operand 468 states and 702 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-20 12:15:32,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:15:33,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:33,577 INFO L93 Difference]: Finished difference Result 867 states and 1322 transitions. [2022-11-20 12:15:33,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:15:33,578 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) Word has length 233 [2022-11-20 12:15:33,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:33,585 INFO L225 Difference]: With dead ends: 867 [2022-11-20 12:15:33,585 INFO L226 Difference]: Without dead ends: 471 [2022-11-20 12:15:33,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:15:33,590 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 694 mSDsluCounter, 2643 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 3204 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:33,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 3204 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-20 12:15:33,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-11-20 12:15:33,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 469. [2022-11-20 12:15:33,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 276 states have (on average 1.2318840579710144) internal successors, (340), 281 states have internal predecessors, (340), 162 states have call successors, (162), 27 states have call predecessors, (162), 29 states have return successors, (201), 161 states have call predecessors, (201), 160 states have call successors, (201) [2022-11-20 12:15:33,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 703 transitions. [2022-11-20 12:15:33,628 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 703 transitions. Word has length 233 [2022-11-20 12:15:33,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:33,629 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 703 transitions. [2022-11-20 12:15:33,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-20 12:15:33,630 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 703 transitions. [2022-11-20 12:15:33,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-20 12:15:33,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:33,635 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:33,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:33,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:33,849 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:33,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:33,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1882469810, now seen corresponding path program 1 times [2022-11-20 12:15:33,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:33,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289991325] [2022-11-20 12:15:33,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:33,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:33,962 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:15:33,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [475759059] [2022-11-20 12:15:33,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:33,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:33,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:33,964 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:33,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:15:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:34,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 3026 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:15:34,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:35,022 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 177 proven. 3 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-20 12:15:35,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:15:35,550 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-11-20 12:15:35,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:35,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289991325] [2022-11-20 12:15:35,551 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:15:35,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475759059] [2022-11-20 12:15:35,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475759059] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:15:35,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:15:35,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-20 12:15:35,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344801539] [2022-11-20 12:15:35,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:15:35,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:15:35,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:35,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:15:35,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:15:35,555 INFO L87 Difference]: Start difference. First operand 469 states and 703 transitions. Second operand has 14 states, 12 states have (on average 10.333333333333334) internal successors, (124), 14 states have internal predecessors, (124), 9 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (48), 5 states have call predecessors, (48), 9 states have call successors, (48) [2022-11-20 12:15:41,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:41,274 INFO L93 Difference]: Finished difference Result 885 states and 1356 transitions. [2022-11-20 12:15:41,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:15:41,275 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 10.333333333333334) internal successors, (124), 14 states have internal predecessors, (124), 9 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (48), 5 states have call predecessors, (48), 9 states have call successors, (48) Word has length 234 [2022-11-20 12:15:41,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:41,281 INFO L225 Difference]: With dead ends: 885 [2022-11-20 12:15:41,281 INFO L226 Difference]: Without dead ends: 488 [2022-11-20 12:15:41,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 455 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:15:41,285 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 1111 mSDsluCounter, 4123 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:41,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1161 Valid, 4669 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-20 12:15:41,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-11-20 12:15:41,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 482. [2022-11-20 12:15:41,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 288 states have (on average 1.2395833333333333) internal successors, (357), 292 states have internal predecessors, (357), 163 states have call successors, (163), 27 states have call predecessors, (163), 29 states have return successors, (202), 163 states have call predecessors, (202), 161 states have call successors, (202) [2022-11-20 12:15:41,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 722 transitions. [2022-11-20 12:15:41,326 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 722 transitions. Word has length 234 [2022-11-20 12:15:41,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:41,326 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 722 transitions. [2022-11-20 12:15:41,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 10.333333333333334) internal successors, (124), 14 states have internal predecessors, (124), 9 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (48), 5 states have call predecessors, (48), 9 states have call successors, (48) [2022-11-20 12:15:41,327 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 722 transitions. [2022-11-20 12:15:41,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-20 12:15:41,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:41,332 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:41,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:41,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:41,545 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:41,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:41,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1782724904, now seen corresponding path program 2 times [2022-11-20 12:15:41,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:41,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111110524] [2022-11-20 12:15:41,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:41,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:41,675 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:15:41,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [593231642] [2022-11-20 12:15:41,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:15:41,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:41,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:41,677 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:41,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:15:42,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:15:42,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:15:42,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 3167 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 12:15:42,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:42,853 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 12:15:42,979 INFO L321 Elim1Store]: treesize reduction 32, result has 50.8 percent of original size [2022-11-20 12:15:42,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 28 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 8 case distinctions, treesize of input 46 treesize of output 60 [2022-11-20 12:15:43,752 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2022-11-20 12:15:43,922 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-11-20 12:15:43,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:43,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:43,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111110524] [2022-11-20 12:15:43,923 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:15:43,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593231642] [2022-11-20 12:15:43,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593231642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:43,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:43,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:15:43,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308142091] [2022-11-20 12:15:43,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:43,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:15:43,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:43,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:15:43,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:15:43,926 INFO L87 Difference]: Start difference. First operand 482 states and 722 transitions. Second operand has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 10 states have internal predecessors, (103), 6 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 5 states have call predecessors, (28), 6 states have call successors, (28) [2022-11-20 12:15:45,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:15:47,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:15:50,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:15:51,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:15:53,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:53,189 INFO L93 Difference]: Finished difference Result 964 states and 1442 transitions. [2022-11-20 12:15:53,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 12:15:53,190 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 10 states have internal predecessors, (103), 6 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 5 states have call predecessors, (28), 6 states have call successors, (28) Word has length 249 [2022-11-20 12:15:53,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:53,200 INFO L225 Difference]: With dead ends: 964 [2022-11-20 12:15:53,200 INFO L226 Difference]: Without dead ends: 524 [2022-11-20 12:15:53,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:15:53,206 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 293 mSDsluCounter, 4337 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 4926 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:53,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 4926 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-11-20 12:15:53,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-11-20 12:15:53,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 499. [2022-11-20 12:15:53,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 296 states have (on average 1.2195945945945945) internal successors, (361), 300 states have internal predecessors, (361), 167 states have call successors, (167), 35 states have call predecessors, (167), 34 states have return successors, (193), 164 states have call predecessors, (193), 165 states have call successors, (193) [2022-11-20 12:15:53,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 721 transitions. [2022-11-20 12:15:53,256 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 721 transitions. Word has length 249 [2022-11-20 12:15:53,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:53,257 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 721 transitions. [2022-11-20 12:15:53,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 10 states have internal predecessors, (103), 6 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 5 states have call predecessors, (28), 6 states have call successors, (28) [2022-11-20 12:15:53,257 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 721 transitions. [2022-11-20 12:15:53,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-11-20 12:15:53,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:53,262 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:53,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:53,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 12:15:53,475 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:53,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:53,476 INFO L85 PathProgramCache]: Analyzing trace with hash 2009774676, now seen corresponding path program 3 times [2022-11-20 12:15:53,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:53,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13380462] [2022-11-20 12:15:53,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:53,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:53,594 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:15:53,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029008490] [2022-11-20 12:15:53,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:15:53,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:53,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:53,596 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:53,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:15:54,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:15:54,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:15:54,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 1885 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:15:54,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:54,977 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-11-20 12:15:54,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:54,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:54,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13380462] [2022-11-20 12:15:54,978 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:15:54,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029008490] [2022-11-20 12:15:54,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029008490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:54,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:54,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:15:54,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018352385] [2022-11-20 12:15:54,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:54,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:15:54,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:54,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:15:54,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:15:54,981 INFO L87 Difference]: Start difference. First operand 499 states and 721 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, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-20 12:15:55,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:15:55,441 INFO L93 Difference]: Finished difference Result 886 states and 1325 transitions. [2022-11-20 12:15:55,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:15:55,442 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, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 264 [2022-11-20 12:15:55,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:15:55,447 INFO L225 Difference]: With dead ends: 886 [2022-11-20 12:15:55,447 INFO L226 Difference]: Without dead ends: 499 [2022-11-20 12:15:55,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 259 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 12:15:55,451 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 2 mSDsluCounter, 2282 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2878 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:15:55,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2878 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:15:55,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-11-20 12:15:55,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2022-11-20 12:15:55,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 296 states have (on average 1.2195945945945945) internal successors, (361), 300 states have internal predecessors, (361), 167 states have call successors, (167), 35 states have call predecessors, (167), 34 states have return successors, (192), 164 states have call predecessors, (192), 165 states have call successors, (192) [2022-11-20 12:15:55,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 720 transitions. [2022-11-20 12:15:55,557 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 720 transitions. Word has length 264 [2022-11-20 12:15:55,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:15:55,558 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 720 transitions. [2022-11-20 12:15:55,558 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, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-20 12:15:55,558 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 720 transitions. [2022-11-20 12:15:55,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-11-20 12:15:55,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:15:55,561 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:55,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:55,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 12:15:55,774 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:15:55,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:55,774 INFO L85 PathProgramCache]: Analyzing trace with hash 69624382, now seen corresponding path program 4 times [2022-11-20 12:15:55,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:55,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921761219] [2022-11-20 12:15:55,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:55,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:55,906 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:15:55,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [518678347] [2022-11-20 12:15:55,907 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:15:55,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:55,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:55,909 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:55,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 12:15:57,023 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:15:57,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:15:57,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 3449 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:15:57,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:57,217 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2022-11-20 12:15:57,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:57,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:57,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921761219] [2022-11-20 12:15:57,217 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:15:57,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518678347] [2022-11-20 12:15:57,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518678347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:57,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:57,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:15:57,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116871905] [2022-11-20 12:15:57,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:57,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:15:57,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:57,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:15:57,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:15:57,221 INFO L87 Difference]: Start difference. First operand 499 states and 720 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 5 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-20 12:15:58,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:16:01,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:16:02,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:02,177 INFO L93 Difference]: Finished difference Result 897 states and 1317 transitions. [2022-11-20 12:16:02,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:16:02,178 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 5 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) Word has length 279 [2022-11-20 12:16:02,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:02,183 INFO L225 Difference]: With dead ends: 897 [2022-11-20 12:16:02,183 INFO L226 Difference]: Without dead ends: 511 [2022-11-20 12:16:02,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:16:02,187 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 76 mSDsluCounter, 3389 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 3985 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:02,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 3985 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-20 12:16:02,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2022-11-20 12:16:02,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 511. [2022-11-20 12:16:02,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 302 states have (on average 1.218543046357616) internal successors, (368), 306 states have internal predecessors, (368), 172 states have call successors, (172), 36 states have call predecessors, (172), 35 states have return successors, (197), 169 states have call predecessors, (197), 170 states have call successors, (197) [2022-11-20 12:16:02,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 737 transitions. [2022-11-20 12:16:02,232 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 737 transitions. Word has length 279 [2022-11-20 12:16:02,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:02,232 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 737 transitions. [2022-11-20 12:16:02,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 5 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-20 12:16:02,233 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 737 transitions. [2022-11-20 12:16:02,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-20 12:16:02,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:02,235 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 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] [2022-11-20 12:16:02,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:02,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:02,453 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:02,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:02,454 INFO L85 PathProgramCache]: Analyzing trace with hash 534833532, now seen corresponding path program 1 times [2022-11-20 12:16:02,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:02,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197222719] [2022-11-20 12:16:02,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:02,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:02,568 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:16:02,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1924721956] [2022-11-20 12:16:02,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:02,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:02,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:02,570 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:16:02,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 12:16:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:03,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 3590 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:16:03,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-20 12:16:03,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:16:03,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:03,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197222719] [2022-11-20 12:16:03,789 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:16:03,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924721956] [2022-11-20 12:16:03,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924721956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:03,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:03,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:16:03,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258962597] [2022-11-20 12:16:03,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:03,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:16:03,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:03,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:16:03,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:16:03,792 INFO L87 Difference]: Start difference. First operand 511 states and 737 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, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-20 12:16:05,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:05,650 INFO L93 Difference]: Finished difference Result 989 states and 1497 transitions. [2022-11-20 12:16:05,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:16:05,651 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, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 294 [2022-11-20 12:16:05,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:05,655 INFO L225 Difference]: With dead ends: 989 [2022-11-20 12:16:05,655 INFO L226 Difference]: Without dead ends: 547 [2022-11-20 12:16:05,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 289 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 12:16:05,659 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 23 mSDsluCounter, 2333 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2974 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:05,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2974 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 12:16:05,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-11-20 12:16:05,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 519. [2022-11-20 12:16:05,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 310 states have (on average 1.2193548387096773) internal successors, (378), 314 states have internal predecessors, (378), 172 states have call successors, (172), 36 states have call predecessors, (172), 35 states have return successors, (197), 169 states have call predecessors, (197), 170 states have call successors, (197) [2022-11-20 12:16:05,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 747 transitions. [2022-11-20 12:16:05,702 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 747 transitions. Word has length 294 [2022-11-20 12:16:05,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:05,703 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 747 transitions. [2022-11-20 12:16:05,703 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, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-20 12:16:05,703 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 747 transitions. [2022-11-20 12:16:05,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-20 12:16:05,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:05,705 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 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] [2022-11-20 12:16:05,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:05,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:05,919 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:05,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:05,920 INFO L85 PathProgramCache]: Analyzing trace with hash 71838976, now seen corresponding path program 1 times [2022-11-20 12:16:05,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:05,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357136919] [2022-11-20 12:16:05,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:05,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:06,028 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:16:06,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622651925] [2022-11-20 12:16:06,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:06,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:06,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:06,030 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:16:06,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 12:16:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:07,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 3584 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:16:07,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:07,116 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-11-20 12:16:07,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:16:07,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:07,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357136919] [2022-11-20 12:16:07,117 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:16:07,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622651925] [2022-11-20 12:16:07,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622651925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:07,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:07,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:16:07,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959054959] [2022-11-20 12:16:07,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:07,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:16:07,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:07,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:16:07,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:16:07,120 INFO L87 Difference]: Start difference. First operand 519 states and 747 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, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-20 12:16:07,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:07,181 INFO L93 Difference]: Finished difference Result 977 states and 1455 transitions. [2022-11-20 12:16:07,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:16:07,182 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, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 294 [2022-11-20 12:16:07,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:07,186 INFO L225 Difference]: With dead ends: 977 [2022-11-20 12:16:07,186 INFO L226 Difference]: Without dead ends: 527 [2022-11-20 12:16:07,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 291 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 12:16:07,190 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 3 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1885 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 12:16:07,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1885 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:16:07,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2022-11-20 12:16:07,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 523. [2022-11-20 12:16:07,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 314 states have (on average 1.21656050955414) internal successors, (382), 318 states have internal predecessors, (382), 172 states have call successors, (172), 36 states have call predecessors, (172), 35 states have return successors, (197), 169 states have call predecessors, (197), 170 states have call successors, (197) [2022-11-20 12:16:07,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 751 transitions. [2022-11-20 12:16:07,231 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 751 transitions. Word has length 294 [2022-11-20 12:16:07,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:07,233 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 751 transitions. [2022-11-20 12:16:07,233 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, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-20 12:16:07,233 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 751 transitions. [2022-11-20 12:16:07,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-20 12:16:07,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:07,236 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 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] [2022-11-20 12:16:07,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:07,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 12:16:07,448 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:07,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:07,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1443724924, now seen corresponding path program 1 times [2022-11-20 12:16:07,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:07,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839885934] [2022-11-20 12:16:07,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:07,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:07,553 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:16:07,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [918409081] [2022-11-20 12:16:07,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:07,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:07,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:07,555 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:16:07,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 12:16:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:08,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 3574 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-20 12:16:08,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:08,859 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 251 proven. 1 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-20 12:16:08,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:16:09,568 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 51 proven. 6 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2022-11-20 12:16:09,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:09,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839885934] [2022-11-20 12:16:09,569 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:16:09,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918409081] [2022-11-20 12:16:09,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918409081] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:16:09,570 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:16:09,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 16 [2022-11-20 12:16:09,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836593537] [2022-11-20 12:16:09,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:16:09,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:16:09,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:09,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:16:09,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:16:09,572 INFO L87 Difference]: Start difference. First operand 523 states and 751 transitions. Second operand has 16 states, 14 states have (on average 7.714285714285714) internal successors, (108), 13 states have internal predecessors, (108), 6 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (33), 6 states have call predecessors, (33), 5 states have call successors, (33) [2022-11-20 12:16:10,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:10,358 INFO L93 Difference]: Finished difference Result 982 states and 1430 transitions. [2022-11-20 12:16:10,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:16:10,358 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 7.714285714285714) internal successors, (108), 13 states have internal predecessors, (108), 6 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (33), 6 states have call predecessors, (33), 5 states have call successors, (33) Word has length 294 [2022-11-20 12:16:10,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:10,363 INFO L225 Difference]: With dead ends: 982 [2022-11-20 12:16:10,363 INFO L226 Difference]: Without dead ends: 528 [2022-11-20 12:16:10,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:16:10,366 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 6 mSDsluCounter, 7587 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 8186 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:10,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 8186 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:16:10,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-11-20 12:16:10,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 526. [2022-11-20 12:16:10,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 316 states have (on average 1.2151898734177216) internal successors, (384), 321 states have internal predecessors, (384), 172 states have call successors, (172), 36 states have call predecessors, (172), 36 states have return successors, (200), 169 states have call predecessors, (200), 170 states have call successors, (200) [2022-11-20 12:16:10,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 756 transitions. [2022-11-20 12:16:10,410 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 756 transitions. Word has length 294 [2022-11-20 12:16:10,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:10,411 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 756 transitions. [2022-11-20 12:16:10,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 7.714285714285714) internal successors, (108), 13 states have internal predecessors, (108), 6 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (33), 6 states have call predecessors, (33), 5 states have call successors, (33) [2022-11-20 12:16:10,411 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 756 transitions. [2022-11-20 12:16:10,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-20 12:16:10,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:10,414 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:10,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:10,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 12:16:10,627 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:10,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:10,628 INFO L85 PathProgramCache]: Analyzing trace with hash -929007272, now seen corresponding path program 1 times [2022-11-20 12:16:10,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:10,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141159094] [2022-11-20 12:16:10,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:10,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:10,768 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:16:10,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [878680593] [2022-11-20 12:16:10,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:10,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:10,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:10,771 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:16:10,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 12:16:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:11,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 3609 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 12:16:11,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:12,006 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 280 proven. 3 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-11-20 12:16:12,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:16:12,362 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-11-20 12:16:12,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:12,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141159094] [2022-11-20 12:16:12,363 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:16:12,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878680593] [2022-11-20 12:16:12,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878680593] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:16:12,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:16:12,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-11-20 12:16:12,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069659260] [2022-11-20 12:16:12,363 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:16:12,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:16:12,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:12,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:16:12,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:16:12,368 INFO L87 Difference]: Start difference. First operand 526 states and 756 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36) [2022-11-20 12:16:15,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:15,634 INFO L93 Difference]: Finished difference Result 992 states and 1454 transitions. [2022-11-20 12:16:15,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:16:15,635 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36) Word has length 305 [2022-11-20 12:16:15,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:15,640 INFO L225 Difference]: With dead ends: 992 [2022-11-20 12:16:15,640 INFO L226 Difference]: Without dead ends: 577 [2022-11-20 12:16:15,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:16:15,643 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 56 mSDsluCounter, 3950 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 4624 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:15,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 4624 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 12:16:15,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-11-20 12:16:15,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 546. [2022-11-20 12:16:15,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 329 states have (on average 1.2188449848024316) internal successors, (401), 333 states have internal predecessors, (401), 179 states have call successors, (179), 36 states have call predecessors, (179), 36 states have return successors, (209), 177 states have call predecessors, (209), 177 states have call successors, (209) [2022-11-20 12:16:15,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 789 transitions. [2022-11-20 12:16:15,711 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 789 transitions. Word has length 305 [2022-11-20 12:16:15,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:15,712 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 789 transitions. [2022-11-20 12:16:15,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36) [2022-11-20 12:16:15,712 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 789 transitions. [2022-11-20 12:16:15,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-20 12:16:15,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:15,715 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:15,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:15,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 12:16:15,928 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:15,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:15,929 INFO L85 PathProgramCache]: Analyzing trace with hash -852106474, now seen corresponding path program 1 times [2022-11-20 12:16:15,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:15,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447934759] [2022-11-20 12:16:15,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:15,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:16,046 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:16:16,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701196141] [2022-11-20 12:16:16,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:16,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:16,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:16,048 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:16:16,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 12:16:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:17,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 3606 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:16:17,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:17,296 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2022-11-20 12:16:17,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:16:17,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:17,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447934759] [2022-11-20 12:16:17,297 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:16:17,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701196141] [2022-11-20 12:16:17,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701196141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:17,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:17,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:16:17,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674441761] [2022-11-20 12:16:17,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:17,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:16:17,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:17,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:16:17,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:16:17,300 INFO L87 Difference]: Start difference. First operand 546 states and 789 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-11-20 12:16:18,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:18,311 INFO L93 Difference]: Finished difference Result 1006 states and 1475 transitions. [2022-11-20 12:16:18,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:16:18,312 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 305 [2022-11-20 12:16:18,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:18,316 INFO L225 Difference]: With dead ends: 1006 [2022-11-20 12:16:18,316 INFO L226 Difference]: Without dead ends: 583 [2022-11-20 12:16:18,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 300 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 12:16:18,320 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 48 mSDsluCounter, 2578 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3249 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:18,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3249 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 12:16:18,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-11-20 12:16:18,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 554. [2022-11-20 12:16:18,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 333 states have (on average 1.2132132132132132) internal successors, (404), 337 states have internal predecessors, (404), 183 states have call successors, (183), 36 states have call predecessors, (183), 36 states have return successors, (213), 181 states have call predecessors, (213), 181 states have call successors, (213) [2022-11-20 12:16:18,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 800 transitions. [2022-11-20 12:16:18,370 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 800 transitions. Word has length 305 [2022-11-20 12:16:18,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:18,371 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 800 transitions. [2022-11-20 12:16:18,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-11-20 12:16:18,371 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 800 transitions. [2022-11-20 12:16:18,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-20 12:16:18,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:18,374 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:18,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:18,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 12:16:18,588 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:18,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:18,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1598069472, now seen corresponding path program 1 times [2022-11-20 12:16:18,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:18,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033567548] [2022-11-20 12:16:18,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:18,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:18,687 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:16:18,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799969969] [2022-11-20 12:16:18,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:18,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:18,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:18,689 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:16:18,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 12:16:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:19,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 3644 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-20 12:16:19,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:20,133 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 12:16:20,168 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 291 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2022-11-20 12:16:20,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:16:20,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:20,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033567548] [2022-11-20 12:16:20,169 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:16:20,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799969969] [2022-11-20 12:16:20,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799969969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:20,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:20,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:16:20,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176876259] [2022-11-20 12:16:20,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:20,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:16:20,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:20,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:16:20,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:16:20,171 INFO L87 Difference]: Start difference. First operand 554 states and 800 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 6 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 6 states have call predecessors, (33), 6 states have call successors, (33) [2022-11-20 12:16:25,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:25,409 INFO L93 Difference]: Finished difference Result 1090 states and 1675 transitions. [2022-11-20 12:16:25,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:16:25,410 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 6 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 6 states have call predecessors, (33), 6 states have call successors, (33) Word has length 316 [2022-11-20 12:16:25,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:25,415 INFO L225 Difference]: With dead ends: 1090 [2022-11-20 12:16:25,415 INFO L226 Difference]: Without dead ends: 605 [2022-11-20 12:16:25,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 308 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 12:16:25,420 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 134 mSDsluCounter, 4379 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 4968 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:25,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 4968 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-20 12:16:25,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-11-20 12:16:25,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 565. [2022-11-20 12:16:25,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 343 states have (on average 1.2128279883381925) internal successors, (416), 346 states have internal predecessors, (416), 183 states have call successors, (183), 36 states have call predecessors, (183), 37 states have return successors, (233), 183 states have call predecessors, (233), 181 states have call successors, (233) [2022-11-20 12:16:25,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 832 transitions. [2022-11-20 12:16:25,471 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 832 transitions. Word has length 316 [2022-11-20 12:16:25,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:25,472 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 832 transitions. [2022-11-20 12:16:25,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 6 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 6 states have call predecessors, (33), 6 states have call successors, (33) [2022-11-20 12:16:25,472 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 832 transitions. [2022-11-20 12:16:25,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-20 12:16:25,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:25,475 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:25,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-11-20 12:16:25,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:25,686 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:25,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:25,687 INFO L85 PathProgramCache]: Analyzing trace with hash 966902492, now seen corresponding path program 1 times [2022-11-20 12:16:25,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:25,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548132766] [2022-11-20 12:16:25,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:25,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:25,820 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:16:25,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1276218660] [2022-11-20 12:16:25,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:25,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:25,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:25,822 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:16:25,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 12:16:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:27,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 3650 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 12:16:27,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:27,053 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2022-11-20 12:16:27,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:16:27,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:27,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548132766] [2022-11-20 12:16:27,054 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:16:27,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276218660] [2022-11-20 12:16:27,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276218660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:27,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:27,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:16:27,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392727586] [2022-11-20 12:16:27,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:27,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:16:27,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:27,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:16:27,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:16:27,057 INFO L87 Difference]: Start difference. First operand 565 states and 832 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, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-20 12:16:27,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:27,148 INFO L93 Difference]: Finished difference Result 1081 states and 1666 transitions. [2022-11-20 12:16:27,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:16:27,149 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, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 316 [2022-11-20 12:16:27,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:27,154 INFO L225 Difference]: With dead ends: 1081 [2022-11-20 12:16:27,154 INFO L226 Difference]: Without dead ends: 585 [2022-11-20 12:16:27,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 312 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 12:16:27,159 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 8 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2600 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 12:16:27,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2600 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:16:27,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-11-20 12:16:27,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 573. [2022-11-20 12:16:27,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 351 states have (on average 1.207977207977208) internal successors, (424), 354 states have internal predecessors, (424), 183 states have call successors, (183), 36 states have call predecessors, (183), 37 states have return successors, (233), 183 states have call predecessors, (233), 181 states have call successors, (233) [2022-11-20 12:16:27,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 840 transitions. [2022-11-20 12:16:27,211 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 840 transitions. Word has length 316 [2022-11-20 12:16:27,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:27,211 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 840 transitions. [2022-11-20 12:16:27,211 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, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-20 12:16:27,212 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 840 transitions. [2022-11-20 12:16:27,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-20 12:16:27,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:27,215 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:27,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:27,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 12:16:27,430 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:27,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:27,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1357336474, now seen corresponding path program 1 times [2022-11-20 12:16:27,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:27,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103468717] [2022-11-20 12:16:27,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:27,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:27,548 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:16:27,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888432305] [2022-11-20 12:16:27,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:27,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:27,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:27,551 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:16:27,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 12:16:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:28,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 3631 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:16:28,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:28,934 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-11-20 12:16:28,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:16:28,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:28,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103468717] [2022-11-20 12:16:28,935 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:16:28,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888432305] [2022-11-20 12:16:28,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888432305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:28,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:28,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:16:28,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422736333] [2022-11-20 12:16:28,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:28,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:16:28,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:28,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:16:28,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:16:28,940 INFO L87 Difference]: Start difference. First operand 573 states and 840 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, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-20 12:16:29,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:29,023 INFO L93 Difference]: Finished difference Result 1077 states and 1670 transitions. [2022-11-20 12:16:29,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:16:29,024 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, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 316 [2022-11-20 12:16:29,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:29,029 INFO L225 Difference]: With dead ends: 1077 [2022-11-20 12:16:29,030 INFO L226 Difference]: Without dead ends: 573 [2022-11-20 12:16:29,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 314 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 12:16:29,036 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 7 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1891 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 12:16:29,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1891 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:16:29,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-11-20 12:16:29,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2022-11-20 12:16:29,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 351 states have (on average 1.205128205128205) internal successors, (423), 354 states have internal predecessors, (423), 183 states have call successors, (183), 36 states have call predecessors, (183), 37 states have return successors, (233), 183 states have call predecessors, (233), 181 states have call successors, (233) [2022-11-20 12:16:29,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 839 transitions. [2022-11-20 12:16:29,101 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 839 transitions. Word has length 316 [2022-11-20 12:16:29,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:29,102 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 839 transitions. [2022-11-20 12:16:29,102 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, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-20 12:16:29,102 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 839 transitions. [2022-11-20 12:16:29,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-11-20 12:16:29,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:29,106 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:16:29,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:29,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:29,321 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:29,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:29,322 INFO L85 PathProgramCache]: Analyzing trace with hash -694629100, now seen corresponding path program 1 times [2022-11-20 12:16:29,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:29,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620089163] [2022-11-20 12:16:29,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:29,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:29,470 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:16:29,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [330286220] [2022-11-20 12:16:29,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:29,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:29,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:29,473 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:16:29,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 12:16:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:30,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 3613 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 12:16:30,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:30,746 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 333 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2022-11-20 12:16:30,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:16:30,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:30,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620089163] [2022-11-20 12:16:30,747 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:16:30,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330286220] [2022-11-20 12:16:30,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330286220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:30,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:30,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:16:30,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126826402] [2022-11-20 12:16:30,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:30,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:16:30,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:30,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:16:30,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:16:30,751 INFO L87 Difference]: Start difference. First operand 573 states and 839 transitions. Second operand has 5 states, 4 states have (on average 31.75) internal successors, (127), 5 states have internal predecessors, (127), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-20 12:16:31,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:31,848 INFO L93 Difference]: Finished difference Result 1007 states and 1494 transitions. [2022-11-20 12:16:31,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:16:31,849 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 31.75) internal successors, (127), 5 states have internal predecessors, (127), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) Word has length 309 [2022-11-20 12:16:31,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:31,853 INFO L225 Difference]: With dead ends: 1007 [2022-11-20 12:16:31,853 INFO L226 Difference]: Without dead ends: 545 [2022-11-20 12:16:31,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 305 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 12:16:31,859 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 2 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:31,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2286 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 12:16:31,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-11-20 12:16:31,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 545. [2022-11-20 12:16:31,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 334 states have (on average 1.2005988023952097) internal successors, (401), 338 states have internal predecessors, (401), 172 states have call successors, (172), 36 states have call predecessors, (172), 37 states have return successors, (219), 171 states have call predecessors, (219), 170 states have call successors, (219) [2022-11-20 12:16:31,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 792 transitions. [2022-11-20 12:16:31,916 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 792 transitions. Word has length 309 [2022-11-20 12:16:31,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:31,917 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 792 transitions. [2022-11-20 12:16:31,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 31.75) internal successors, (127), 5 states have internal predecessors, (127), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-20 12:16:31,918 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 792 transitions. [2022-11-20 12:16:31,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-20 12:16:31,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:31,920 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:31,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:32,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:32,136 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:32,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:32,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1098315756, now seen corresponding path program 1 times [2022-11-20 12:16:32,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:32,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626063438] [2022-11-20 12:16:32,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:32,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:32,263 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:16:32,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1138440797] [2022-11-20 12:16:32,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:32,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:32,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:32,265 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:16:32,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 12:16:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:33,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 3654 conjuncts, 80 conjunts are in the unsatisfiable core [2022-11-20 12:16:33,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:35,452 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 25 treesize of output 17 [2022-11-20 12:16:35,460 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 21 treesize of output 13 [2022-11-20 12:16:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-11-20 12:16:35,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:16:35,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:35,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626063438] [2022-11-20 12:16:35,500 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:16:35,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138440797] [2022-11-20 12:16:35,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138440797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:35,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:35,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 12:16:35,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798091809] [2022-11-20 12:16:35,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:35,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 12:16:35,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:35,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 12:16:35,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:16:35,503 INFO L87 Difference]: Start difference. First operand 545 states and 792 transitions. Second operand has 21 states, 21 states have (on average 6.523809523809524) internal successors, (137), 18 states have internal predecessors, (137), 8 states have call successors, (35), 3 states have call predecessors, (35), 7 states have return successors, (34), 10 states have call predecessors, (34), 8 states have call successors, (34) [2022-11-20 12:16:43,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:43,729 INFO L93 Difference]: Finished difference Result 1100 states and 1664 transitions. [2022-11-20 12:16:43,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 12:16:43,730 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.523809523809524) internal successors, (137), 18 states have internal predecessors, (137), 8 states have call successors, (35), 3 states have call predecessors, (35), 7 states have return successors, (34), 10 states have call predecessors, (34), 8 states have call successors, (34) Word has length 320 [2022-11-20 12:16:43,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:43,736 INFO L225 Difference]: With dead ends: 1100 [2022-11-20 12:16:43,736 INFO L226 Difference]: Without dead ends: 653 [2022-11-20 12:16:43,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 297 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=126, Invalid=866, Unknown=0, NotChecked=0, Total=992 [2022-11-20 12:16:43,741 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 135 mSDsluCounter, 6556 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 7146 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 228 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:43,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 7146 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1347 Invalid, 0 Unknown, 228 Unchecked, 7.6s Time] [2022-11-20 12:16:43,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2022-11-20 12:16:43,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 608. [2022-11-20 12:16:43,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 383 states have (on average 1.1906005221932114) internal successors, (456), 387 states have internal predecessors, (456), 179 states have call successors, (179), 40 states have call predecessors, (179), 44 states have return successors, (281), 181 states have call predecessors, (281), 177 states have call successors, (281) [2022-11-20 12:16:43,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 916 transitions. [2022-11-20 12:16:43,802 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 916 transitions. Word has length 320 [2022-11-20 12:16:43,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:43,803 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 916 transitions. [2022-11-20 12:16:43,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.523809523809524) internal successors, (137), 18 states have internal predecessors, (137), 8 states have call successors, (35), 3 states have call predecessors, (35), 7 states have return successors, (34), 10 states have call predecessors, (34), 8 states have call successors, (34) [2022-11-20 12:16:43,803 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 916 transitions. [2022-11-20 12:16:43,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-20 12:16:43,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:43,807 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:43,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:44,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-20 12:16:44,024 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:44,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:44,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1348976752, now seen corresponding path program 1 times [2022-11-20 12:16:44,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:44,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202750803] [2022-11-20 12:16:44,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:44,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:44,135 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:16:44,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701860360] [2022-11-20 12:16:44,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:44,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:44,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:44,137 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:16:44,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-20 12:16:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:45,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 3644 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:16:45,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:45,521 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 273 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-11-20 12:16:45,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:16:45,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:45,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202750803] [2022-11-20 12:16:45,522 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:16:45,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701860360] [2022-11-20 12:16:45,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701860360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:45,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:16:45,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:16:45,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722439244] [2022-11-20 12:16:45,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:45,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:16:45,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:45,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:16:45,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:16:45,525 INFO L87 Difference]: Start difference. First operand 608 states and 916 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-20 12:16:46,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:46,552 INFO L93 Difference]: Finished difference Result 1133 states and 1796 transitions. [2022-11-20 12:16:46,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:16:46,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 320 [2022-11-20 12:16:46,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:46,558 INFO L225 Difference]: With dead ends: 1133 [2022-11-20 12:16:46,559 INFO L226 Difference]: Without dead ends: 594 [2022-11-20 12:16:46,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 317 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 12:16:46,565 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 10 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:46,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2428 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 12:16:46,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-11-20 12:16:46,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2022-11-20 12:16:46,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 370 states have (on average 1.1864864864864866) internal successors, (439), 374 states have internal predecessors, (439), 179 states have call successors, (179), 40 states have call predecessors, (179), 43 states have return successors, (261), 180 states have call predecessors, (261), 177 states have call successors, (261) [2022-11-20 12:16:46,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 879 transitions. [2022-11-20 12:16:46,624 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 879 transitions. Word has length 320 [2022-11-20 12:16:46,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:46,624 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 879 transitions. [2022-11-20 12:16:46,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-20 12:16:46,625 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 879 transitions. [2022-11-20 12:16:46,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-11-20 12:16:46,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:46,628 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:46,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:46,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-20 12:16:46,843 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:16:46,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:46,843 INFO L85 PathProgramCache]: Analyzing trace with hash -637419216, now seen corresponding path program 1 times [2022-11-20 12:16:46,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:46,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78012965] [2022-11-20 12:16:46,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:46,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:46,999 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:16:47,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1314748480] [2022-11-20 12:16:47,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:47,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:47,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:47,002 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:16:47,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-20 12:16:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:48,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 3660 conjuncts, 117 conjunts are in the unsatisfiable core [2022-11-20 12:16:48,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:48,739 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 12:16:49,191 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 12:16:49,210 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 12:16:51,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:16:51,314 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 12:16:51,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:16:51,323 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 12:16:53,566 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_7846 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7846))) (exists ((v_ArrVal_7847 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7847) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-20 12:16:53,952 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7848 Int) (v_ArrVal_7851 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7848)) |c_#memory_$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|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7851))))) is different from true [2022-11-20 12:16:53,981 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7848 Int) (v_ArrVal_7851 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7848))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7851)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-20 12:16:54,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:16:54,571 INFO L321 Elim1Store]: treesize reduction 61, result has 37.1 percent of original size [2022-11-20 12:16:54,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 98 [2022-11-20 12:16:54,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:16:54,684 INFO L321 Elim1Store]: treesize reduction 61, result has 37.1 percent of original size [2022-11-20 12:16:54,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 98 [2022-11-20 12:16:54,721 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:16:54,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 12:16:54,774 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 12:16:54,802 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 12:16:54,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:16:54,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2022-11-20 12:16:54,895 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 12:16:54,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:16:54,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 34 [2022-11-20 12:16:55,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:16:55,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 34 [2022-11-20 12:16:55,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 29 [2022-11-20 12:16:55,233 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 9 treesize of output 7 [2022-11-20 12:16:55,386 INFO L321 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-20 12:16:55,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 69 [2022-11-20 12:16:55,480 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 9 treesize of output 7 [2022-11-20 12:16:55,497 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 12:17:10,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:17:10,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:17:10,443 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 371 proven. 34 refuted. 0 times theorem prover too weak. 235 trivial. 10 not checked. [2022-11-20 12:17:10,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:17:13,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:17:13,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78012965] [2022-11-20 12:17:13,677 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:17:13,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314748480] [2022-11-20 12:17:13,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314748480] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:17:13,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:17:13,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2022-11-20 12:17:13,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065525881] [2022-11-20 12:17:13,678 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:17:13,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-20 12:17:13,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:17:13,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 12:17:13,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1077, Unknown=13, NotChecked=204, Total=1406 [2022-11-20 12:17:13,681 INFO L87 Difference]: Start difference. First operand 594 states and 879 transitions. Second operand has 30 states, 26 states have (on average 5.8076923076923075) internal successors, (151), 29 states have internal predecessors, (151), 15 states have call successors, (38), 8 states have call predecessors, (38), 13 states have return successors, (36), 13 states have call predecessors, (36), 15 states have call successors, (36) [2022-11-20 12:17:14,861 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0) (exists ((v_ArrVal_7846 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_7846))) (exists ((v_ArrVal_7847 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_7847))))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7848 Int) (v_ArrVal_7851 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7848))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7851)) |c_#memory_$Pointer$.base|)))) is different from true [2022-11-20 12:17:36,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:17:36,207 INFO L93 Difference]: Finished difference Result 1500 states and 2491 transitions. [2022-11-20 12:17:36,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 12:17:36,209 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 5.8076923076923075) internal successors, (151), 29 states have internal predecessors, (151), 15 states have call successors, (38), 8 states have call predecessors, (38), 13 states have return successors, (36), 13 states have call predecessors, (36), 15 states have call successors, (36) Word has length 321 [2022-11-20 12:17:36,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:17:36,217 INFO L225 Difference]: With dead ends: 1500 [2022-11-20 12:17:36,217 INFO L226 Difference]: Without dead ends: 981 [2022-11-20 12:17:36,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 478 SyntacticMatches, 12 SemanticMatches, 53 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 34.5s TimeCoverageRelationStatistics Valid=228, Invalid=2300, Unknown=38, NotChecked=404, Total=2970 [2022-11-20 12:17:36,222 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 320 mSDsluCounter, 7498 mSDsCounter, 0 mSdLazyCounter, 5584 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 8224 SdHoareTripleChecker+Invalid, 13745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 5584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7866 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:17:36,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 8224 Invalid, 13745 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [295 Valid, 5584 Invalid, 0 Unknown, 7866 Unchecked, 9.3s Time] [2022-11-20 12:17:36,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-20 12:17:36,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 660. [2022-11-20 12:17:36,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 422 states have (on average 1.1895734597156398) internal successors, (502), 431 states have internal predecessors, (502), 183 states have call successors, (183), 43 states have call predecessors, (183), 53 states have return successors, (332), 186 states have call predecessors, (332), 181 states have call successors, (332) [2022-11-20 12:17:36,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1017 transitions. [2022-11-20 12:17:36,314 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1017 transitions. Word has length 321 [2022-11-20 12:17:36,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:17:36,315 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 1017 transitions. [2022-11-20 12:17:36,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 5.8076923076923075) internal successors, (151), 29 states have internal predecessors, (151), 15 states have call successors, (38), 8 states have call predecessors, (38), 13 states have return successors, (36), 13 states have call predecessors, (36), 15 states have call successors, (36) [2022-11-20 12:17:36,315 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1017 transitions. [2022-11-20 12:17:36,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2022-11-20 12:17:36,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:17:36,319 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:17:36,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-20 12:17:36,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-20 12:17:36,535 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:17:36,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:17:36,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1941384260, now seen corresponding path program 1 times [2022-11-20 12:17:36,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:17:36,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836246834] [2022-11-20 12:17:36,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:17:36,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:17:36,643 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:17:36,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [672147487] [2022-11-20 12:17:36,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:17:36,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:17:36,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:17:36,645 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:17:36,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-20 12:17:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:17:38,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 3703 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 12:17:38,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:17:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 358 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-11-20 12:17:38,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:17:38,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:17:38,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836246834] [2022-11-20 12:17:38,177 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:17:38,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672147487] [2022-11-20 12:17:38,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672147487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:17:38,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:17:38,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 12:17:38,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571401746] [2022-11-20 12:17:38,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:17:38,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:17:38,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:17:38,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:17:38,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:17:38,180 INFO L87 Difference]: Start difference. First operand 660 states and 1017 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, (35), 2 states have call predecessors, (35), 5 states have return successors, (35), 5 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-20 12:17:38,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:17:38,456 INFO L93 Difference]: Finished difference Result 1264 states and 2031 transitions. [2022-11-20 12:17:38,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:17:38,457 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, (35), 2 states have call predecessors, (35), 5 states have return successors, (35), 5 states have call predecessors, (35), 2 states have call successors, (35) Word has length 333 [2022-11-20 12:17:38,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:17:38,463 INFO L225 Difference]: With dead ends: 1264 [2022-11-20 12:17:38,463 INFO L226 Difference]: Without dead ends: 689 [2022-11-20 12:17:38,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 323 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 12:17:38,468 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 16 mSDsluCounter, 6461 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 7114 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:17:38,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 7114 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:17:38,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-11-20 12:17:38,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 660. [2022-11-20 12:17:38,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 423 states have (on average 1.1891252955082743) internal successors, (503), 429 states have internal predecessors, (503), 183 states have call successors, (183), 43 states have call predecessors, (183), 52 states have return successors, (311), 188 states have call predecessors, (311), 181 states have call successors, (311) [2022-11-20 12:17:38,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 997 transitions. [2022-11-20 12:17:38,539 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 997 transitions. Word has length 333 [2022-11-20 12:17:38,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:17:38,540 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 997 transitions. [2022-11-20 12:17:38,540 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, (35), 2 states have call predecessors, (35), 5 states have return successors, (35), 5 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-20 12:17:38,540 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 997 transitions. [2022-11-20 12:17:38,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-11-20 12:17:38,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:17:38,543 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:17:38,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-20 12:17:38,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-20 12:17:38,751 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:17:38,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:17:38,751 INFO L85 PathProgramCache]: Analyzing trace with hash 2050239405, now seen corresponding path program 1 times [2022-11-20 12:17:38,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:17:38,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125476134] [2022-11-20 12:17:38,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:17:38,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:17:38,849 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:17:38,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634999227] [2022-11-20 12:17:38,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:17:38,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:17:38,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:17:38,851 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:17:38,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-20 12:17:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:17:40,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 3682 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:17:40,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:17:40,264 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2022-11-20 12:17:40,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:17:40,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:17:40,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125476134] [2022-11-20 12:17:40,264 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:17:40,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634999227] [2022-11-20 12:17:40,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634999227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:17:40,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:17:40,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:17:40,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691743522] [2022-11-20 12:17:40,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:17:40,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:17:40,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:17:40,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:17:40,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:17:40,268 INFO L87 Difference]: Start difference. First operand 660 states and 997 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-20 12:17:42,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:17:42,195 INFO L93 Difference]: Finished difference Result 1234 states and 1996 transitions. [2022-11-20 12:17:42,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:17:42,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 341 [2022-11-20 12:17:42,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:17:42,201 INFO L225 Difference]: With dead ends: 1234 [2022-11-20 12:17:42,202 INFO L226 Difference]: Without dead ends: 659 [2022-11-20 12:17:42,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 337 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 12:17:42,207 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 13 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:17:42,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2403 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 12:17:42,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-11-20 12:17:42,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 652. [2022-11-20 12:17:42,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 416 states have (on average 1.1826923076923077) internal successors, (492), 422 states have internal predecessors, (492), 183 states have call successors, (183), 43 states have call predecessors, (183), 51 states have return successors, (290), 187 states have call predecessors, (290), 181 states have call successors, (290) [2022-11-20 12:17:42,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 965 transitions. [2022-11-20 12:17:42,272 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 965 transitions. Word has length 341 [2022-11-20 12:17:42,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:17:42,273 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 965 transitions. [2022-11-20 12:17:42,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-20 12:17:42,273 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 965 transitions. [2022-11-20 12:17:42,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-11-20 12:17:42,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:17:42,276 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:17:42,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-20 12:17:42,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:17:42,491 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:17:42,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:17:42,491 INFO L85 PathProgramCache]: Analyzing trace with hash -824858462, now seen corresponding path program 2 times [2022-11-20 12:17:42,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:17:42,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557689359] [2022-11-20 12:17:42,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:17:42,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:17:42,608 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:17:42,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [88887237] [2022-11-20 12:17:42,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:17:42,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:17:42,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:17:42,610 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:17:42,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-20 12:17:44,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:17:44,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:17:44,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 3711 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-20 12:17:44,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:17:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 216 proven. 1 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2022-11-20 12:17:44,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:17:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 79 proven. 13 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2022-11-20 12:17:45,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:17:45,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557689359] [2022-11-20 12:17:45,482 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:17:45,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88887237] [2022-11-20 12:17:45,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88887237] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:17:45,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:17:45,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 22 [2022-11-20 12:17:45,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615314366] [2022-11-20 12:17:45,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:17:45,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:17:45,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:17:45,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:17:45,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:17:45,486 INFO L87 Difference]: Start difference. First operand 652 states and 965 transitions. Second operand has 22 states, 18 states have (on average 7.777777777777778) internal successors, (140), 15 states have internal predecessors, (140), 6 states have call successors, (40), 3 states have call predecessors, (40), 7 states have return successors, (41), 8 states have call predecessors, (41), 5 states have call successors, (41) [2022-11-20 12:17:46,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:17:46,471 INFO L93 Difference]: Finished difference Result 1148 states and 1756 transitions. [2022-11-20 12:17:46,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 12:17:46,472 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 7.777777777777778) internal successors, (140), 15 states have internal predecessors, (140), 6 states have call successors, (40), 3 states have call predecessors, (40), 7 states have return successors, (41), 8 states have call predecessors, (41), 5 states have call successors, (41) Word has length 345 [2022-11-20 12:17:46,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:17:46,477 INFO L225 Difference]: With dead ends: 1148 [2022-11-20 12:17:46,478 INFO L226 Difference]: Without dead ends: 659 [2022-11-20 12:17:46,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 664 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 12:17:46,481 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 13 mSDsluCounter, 10859 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 11475 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:17:46,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 11475 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 12:17:46,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-11-20 12:17:46,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 652. [2022-11-20 12:17:46,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 416 states have (on average 1.1826923076923077) internal successors, (492), 422 states have internal predecessors, (492), 183 states have call successors, (183), 43 states have call predecessors, (183), 51 states have return successors, (288), 187 states have call predecessors, (288), 181 states have call successors, (288) [2022-11-20 12:17:46,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 963 transitions. [2022-11-20 12:17:46,546 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 963 transitions. Word has length 345 [2022-11-20 12:17:46,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:17:46,546 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 963 transitions. [2022-11-20 12:17:46,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 7.777777777777778) internal successors, (140), 15 states have internal predecessors, (140), 6 states have call successors, (40), 3 states have call predecessors, (40), 7 states have return successors, (41), 8 states have call predecessors, (41), 5 states have call successors, (41) [2022-11-20 12:17:46,547 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 963 transitions. [2022-11-20 12:17:46,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-20 12:17:46,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:17:46,550 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:17:46,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-20 12:17:46,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-20 12:17:46,765 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:17:46,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:17:46,765 INFO L85 PathProgramCache]: Analyzing trace with hash -731967377, now seen corresponding path program 1 times [2022-11-20 12:17:46,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:17:46,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843178376] [2022-11-20 12:17:46,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:17:46,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:17:46,867 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:17:46,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486199221] [2022-11-20 12:17:46,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:17:46,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:17:46,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:17:46,868 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:17:46,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-20 12:17:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:17:48,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 3704 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-20 12:17:48,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:17:48,367 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 12:17:48,764 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 23 treesize of output 22 [2022-11-20 12:17:48,913 WARN L859 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int)) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| 1))) is different from true [2022-11-20 12:17:49,026 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 12:17:49,030 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 13 treesize of output 9 [2022-11-20 12:17:49,116 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_9442 Int) (ensure_array_list_has_allocated_data_member_~list.offset Int) (v_ArrVal_9444 Int)) (and (= (store |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) (+ ensure_array_list_has_allocated_data_member_~list.offset 32) v_ArrVal_9442) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_9444)) |c_#memory_int|) (<= |c_ensure_array_list_has_allocated_data_member_#in~list.offset| ensure_array_list_has_allocated_data_member_~list.offset))) (exists ((|bounded_malloc_#res.base| Int)) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| 1)))) is different from true [2022-11-20 12:17:49,150 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:17:49,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-11-20 12:17:49,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:17:49,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:17:49,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-20 12:17:49,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:17:49,214 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 12:17:49,416 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9448 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_9448))) is different from true [2022-11-20 12:17:50,009 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 313 proven. 29 refuted. 3 times theorem prover too weak. 316 trivial. 2 not checked. [2022-11-20 12:17:50,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:17:50,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:17:50,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843178376] [2022-11-20 12:17:50,579 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:17:50,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486199221] [2022-11-20 12:17:50,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486199221] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:17:50,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:17:50,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-11-20 12:17:50,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882474666] [2022-11-20 12:17:50,579 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:17:50,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 12:17:50,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:17:50,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 12:17:50,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=612, Unknown=8, NotChecked=156, Total=870 [2022-11-20 12:17:50,581 INFO L87 Difference]: Start difference. First operand 652 states and 963 transitions. Second operand has 29 states, 27 states have (on average 5.703703703703703) internal successors, (154), 25 states have internal predecessors, (154), 15 states have call successors, (39), 7 states have call predecessors, (39), 10 states have return successors, (37), 12 states have call predecessors, (37), 15 states have call successors, (37) [2022-11-20 12:17:55,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:17:56,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:17:57,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:18:03,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:18:03,317 INFO L93 Difference]: Finished difference Result 1488 states and 2325 transitions. [2022-11-20 12:18:03,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 12:18:03,317 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 5.703703703703703) internal successors, (154), 25 states have internal predecessors, (154), 15 states have call successors, (39), 7 states have call predecessors, (39), 10 states have return successors, (37), 12 states have call predecessors, (37), 15 states have call successors, (37) Word has length 329 [2022-11-20 12:18:03,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:18:03,324 INFO L225 Difference]: With dead ends: 1488 [2022-11-20 12:18:03,324 INFO L226 Difference]: Without dead ends: 928 [2022-11-20 12:18:03,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 496 SyntacticMatches, 11 SemanticMatches, 35 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=138, Invalid=973, Unknown=23, NotChecked=198, Total=1332 [2022-11-20 12:18:03,327 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 426 mSDsluCounter, 5847 mSDsCounter, 0 mSdLazyCounter, 5350 mSolverCounterSat, 755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 6464 SdHoareTripleChecker+Invalid, 13793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 755 IncrementalHoareTripleChecker+Valid, 5350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7688 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:18:03,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 6464 Invalid, 13793 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [755 Valid, 5350 Invalid, 0 Unknown, 7688 Unchecked, 12.2s Time] [2022-11-20 12:18:03,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2022-11-20 12:18:03,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 679. [2022-11-20 12:18:03,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 438 states have (on average 1.182648401826484) internal successors, (518), 445 states have internal predecessors, (518), 185 states have call successors, (185), 44 states have call predecessors, (185), 54 states have return successors, (314), 190 states have call predecessors, (314), 183 states have call successors, (314) [2022-11-20 12:18:03,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1017 transitions. [2022-11-20 12:18:03,431 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1017 transitions. Word has length 329 [2022-11-20 12:18:03,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:18:03,431 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 1017 transitions. [2022-11-20 12:18:03,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 5.703703703703703) internal successors, (154), 25 states have internal predecessors, (154), 15 states have call successors, (39), 7 states have call predecessors, (39), 10 states have return successors, (37), 12 states have call predecessors, (37), 15 states have call successors, (37) [2022-11-20 12:18:03,432 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1017 transitions. [2022-11-20 12:18:03,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2022-11-20 12:18:03,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:18:03,435 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:18:03,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:03,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-20 12:18:03,650 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:18:03,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:03,650 INFO L85 PathProgramCache]: Analyzing trace with hash 78730691, now seen corresponding path program 2 times [2022-11-20 12:18:03,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:18:03,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754319757] [2022-11-20 12:18:03,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:18:03,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:18:03,775 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:18:03,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [923749649] [2022-11-20 12:18:03,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:18:03,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:18:03,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:03,787 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:18:03,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-20 12:18:05,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:18:05,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:18:05,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 3672 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-20 12:18:05,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:18:05,663 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 371 proven. 11 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2022-11-20 12:18:05,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:18:07,221 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 94 proven. 48 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2022-11-20 12:18:07,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:18:07,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754319757] [2022-11-20 12:18:07,221 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:18:07,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923749649] [2022-11-20 12:18:07,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923749649] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:18:07,222 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:18:07,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21] total 30 [2022-11-20 12:18:07,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17069917] [2022-11-20 12:18:07,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:18:07,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-20 12:18:07,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:18:07,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 12:18:07,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=799, Unknown=0, NotChecked=0, Total=870 [2022-11-20 12:18:07,225 INFO L87 Difference]: Start difference. First operand 679 states and 1017 transitions. Second operand has 30 states, 26 states have (on average 6.653846153846154) internal successors, (173), 21 states have internal predecessors, (173), 8 states have call successors, (44), 3 states have call predecessors, (44), 10 states have return successors, (47), 12 states have call predecessors, (47), 7 states have call successors, (47) [2022-11-20 12:18:08,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:18:08,579 INFO L93 Difference]: Finished difference Result 1257 states and 1953 transitions. [2022-11-20 12:18:08,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 12:18:08,579 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 6.653846153846154) internal successors, (173), 21 states have internal predecessors, (173), 8 states have call successors, (44), 3 states have call predecessors, (44), 10 states have return successors, (47), 12 states have call predecessors, (47), 7 states have call successors, (47) Word has length 339 [2022-11-20 12:18:08,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:18:08,584 INFO L225 Difference]: With dead ends: 1257 [2022-11-20 12:18:08,584 INFO L226 Difference]: Without dead ends: 739 [2022-11-20 12:18:08,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 644 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=1091, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 12:18:08,587 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 21 mSDsluCounter, 15338 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 15995 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:18:08,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 15995 Invalid, 1505 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 12:18:08,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-11-20 12:18:08,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 713. [2022-11-20 12:18:08,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 468 states have (on average 1.1816239316239316) internal successors, (553), 475 states have internal predecessors, (553), 187 states have call successors, (187), 44 states have call predecessors, (187), 56 states have return successors, (348), 194 states have call predecessors, (348), 185 states have call successors, (348) [2022-11-20 12:18:08,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1088 transitions. [2022-11-20 12:18:08,661 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1088 transitions. Word has length 339 [2022-11-20 12:18:08,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:18:08,661 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 1088 transitions. [2022-11-20 12:18:08,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 6.653846153846154) internal successors, (173), 21 states have internal predecessors, (173), 8 states have call successors, (44), 3 states have call predecessors, (44), 10 states have return successors, (47), 12 states have call predecessors, (47), 7 states have call successors, (47) [2022-11-20 12:18:08,662 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1088 transitions. [2022-11-20 12:18:08,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2022-11-20 12:18:08,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:18:08,665 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:18:08,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-11-20 12:18:08,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-20 12:18:08,880 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:18:08,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:08,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1089371708, now seen corresponding path program 3 times [2022-11-20 12:18:08,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:18:08,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101391218] [2022-11-20 12:18:08,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:18:08,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:18:08,971 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:18:08,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [75757726] [2022-11-20 12:18:08,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:18:08,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:18:08,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:08,973 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:18:08,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-20 12:18:13,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-20 12:18:13,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:18:13,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 3703 conjuncts, 172 conjunts are in the unsatisfiable core [2022-11-20 12:18:13,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:18:13,891 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 12:18:14,384 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 25 treesize of output 24 [2022-11-20 12:18:16,895 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 26 treesize of output 25 [2022-11-20 12:18:16,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-11-20 12:18:17,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 48 [2022-11-20 12:18:17,175 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:18:17,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 12:18:19,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:18:19,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:18:19,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-20 12:18:21,505 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_10224 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_10224))) is different from true [2022-11-20 12:18:27,924 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_10225 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|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_10225)) |c_#memory_int|)) is different from true [2022-11-20 12:18:27,967 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_10225 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_10225)) |c_#memory_int|)) is different from true [2022-11-20 12:18:38,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:18:39,002 INFO L321 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2022-11-20 12:18:39,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 60 treesize of output 1 [2022-11-20 12:18:39,011 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 310 proven. 19 refuted. 0 times theorem prover too weak. 320 trivial. 10 not checked. [2022-11-20 12:18:39,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:18:40,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:18:40,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101391218] [2022-11-20 12:18:40,715 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:18:40,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75757726] [2022-11-20 12:18:40,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75757726] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:18:40,716 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:18:40,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2022-11-20 12:18:40,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593766805] [2022-11-20 12:18:40,716 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:18:40,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-20 12:18:40,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:18:40,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-20 12:18:40,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1625, Unknown=44, NotChecked=252, Total=2070 [2022-11-20 12:18:40,718 INFO L87 Difference]: Start difference. First operand 713 states and 1088 transitions. Second operand has 39 states, 33 states have (on average 4.696969696969697) internal successors, (155), 35 states have internal predecessors, (155), 16 states have call successors, (40), 8 states have call predecessors, (40), 13 states have return successors, (38), 14 states have call predecessors, (38), 16 states have call successors, (38) [2022-11-20 12:18:41,335 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_10224 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_10224))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_10225 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|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_10225)) |c_#memory_int|))) is different from true [2022-11-20 12:18:41,365 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_10225 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_10225)) |c_#memory_int|)) (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0) (exists ((v_ArrVal_10224 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_10224)))))) is different from true [2022-11-20 12:18:47,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:18:52,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:18:52,065 INFO L93 Difference]: Finished difference Result 1505 states and 2375 transitions. [2022-11-20 12:18:52,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 12:18:52,065 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 33 states have (on average 4.696969696969697) internal successors, (155), 35 states have internal predecessors, (155), 16 states have call successors, (40), 8 states have call predecessors, (40), 13 states have return successors, (38), 14 states have call predecessors, (38), 16 states have call successors, (38) Word has length 333 [2022-11-20 12:18:52,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:18:52,073 INFO L225 Difference]: With dead ends: 1505 [2022-11-20 12:18:52,073 INFO L226 Difference]: Without dead ends: 894 [2022-11-20 12:18:52,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 493 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 29.0s TimeCoverageRelationStatistics Valid=192, Invalid=2225, Unknown=53, NotChecked=500, Total=2970 [2022-11-20 12:18:52,076 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 317 mSDsluCounter, 5071 mSDsCounter, 0 mSdLazyCounter, 3560 mSolverCounterSat, 452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 5680 SdHoareTripleChecker+Invalid, 10806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 3560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6794 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:18:52,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 5680 Invalid, 10806 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [452 Valid, 3560 Invalid, 0 Unknown, 6794 Unchecked, 6.6s Time] [2022-11-20 12:18:52,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2022-11-20 12:18:52,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 782. [2022-11-20 12:18:52,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 517 states have (on average 1.1818181818181819) internal successors, (611), 528 states have internal predecessors, (611), 196 states have call successors, (196), 50 states have call predecessors, (196), 67 states have return successors, (413), 204 states have call predecessors, (413), 194 states have call successors, (413) [2022-11-20 12:18:52,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1220 transitions. [2022-11-20 12:18:52,177 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1220 transitions. Word has length 333 [2022-11-20 12:18:52,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:18:52,178 INFO L495 AbstractCegarLoop]: Abstraction has 782 states and 1220 transitions. [2022-11-20 12:18:52,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 33 states have (on average 4.696969696969697) internal successors, (155), 35 states have internal predecessors, (155), 16 states have call successors, (40), 8 states have call predecessors, (40), 13 states have return successors, (38), 14 states have call predecessors, (38), 16 states have call successors, (38) [2022-11-20 12:18:52,178 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1220 transitions. [2022-11-20 12:18:52,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-11-20 12:18:52,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:18:52,183 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:18:52,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:52,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-20 12:18:52,399 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:18:52,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:52,399 INFO L85 PathProgramCache]: Analyzing trace with hash 2043910648, now seen corresponding path program 1 times [2022-11-20 12:18:52,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:18:52,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352072304] [2022-11-20 12:18:52,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:18:52,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:18:52,539 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:18:52,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760984769] [2022-11-20 12:18:52,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:18:52,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:18:52,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:52,541 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:18:52,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-20 12:18:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:18:54,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 3717 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-20 12:18:54,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:18:54,147 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 12:18:54,554 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 23 treesize of output 22 [2022-11-20 12:18:54,895 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 13 treesize of output 9 [2022-11-20 12:18:54,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-11-20 12:18:54,929 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 13 treesize of output 9 [2022-11-20 12:18:54,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-11-20 12:18:55,015 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_10669 Int)) (and (= (select |c_old(#valid)| |bounded_malloc_#res.base|) 0) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_10669)))) (exists ((v_ArrVal_10671 Int) (v_ArrVal_10672 Int) (ensure_array_list_has_allocated_data_member_~list.offset Int)) (and (<= |c_ensure_array_list_has_allocated_data_member_#in~list.offset| ensure_array_list_has_allocated_data_member_~list.offset) (= |c_#memory_int| (store |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) (+ ensure_array_list_has_allocated_data_member_~list.offset 32) v_ArrVal_10671) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_10672)))))) is different from true [2022-11-20 12:18:55,054 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:18:55,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 12:18:55,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:18:55,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:18:55,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-20 12:18:55,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:18:55,084 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 12:18:55,315 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_10676 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_10676))) is different from true [2022-11-20 12:18:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 313 proven. 32 refuted. 3 times theorem prover too weak. 316 trivial. 2 not checked. [2022-11-20 12:18:55,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:18:56,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:18:56,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352072304] [2022-11-20 12:18:56,357 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:18:56,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760984769] [2022-11-20 12:18:56,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760984769] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:18:56,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:18:56,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2022-11-20 12:18:56,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551110693] [2022-11-20 12:18:56,358 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:18:56,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 12:18:56,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:18:56,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 12:18:56,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=605, Unknown=14, NotChecked=102, Total=812 [2022-11-20 12:18:56,360 INFO L87 Difference]: Start difference. First operand 782 states and 1220 transitions. Second operand has 28 states, 26 states have (on average 6.038461538461538) internal successors, (157), 23 states have internal predecessors, (157), 14 states have call successors, (40), 7 states have call predecessors, (40), 10 states have return successors, (38), 11 states have call predecessors, (38), 14 states have call successors, (38) [2022-11-20 12:19:00,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:19:05,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:19:05,230 INFO L93 Difference]: Finished difference Result 1673 states and 2727 transitions. [2022-11-20 12:19:05,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 12:19:05,231 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 6.038461538461538) internal successors, (157), 23 states have internal predecessors, (157), 14 states have call successors, (40), 7 states have call predecessors, (40), 10 states have return successors, (38), 11 states have call predecessors, (38), 14 states have call successors, (38) Word has length 334 [2022-11-20 12:19:05,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:19:05,239 INFO L225 Difference]: With dead ends: 1673 [2022-11-20 12:19:05,239 INFO L226 Difference]: Without dead ends: 1030 [2022-11-20 12:19:05,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 505 SyntacticMatches, 8 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=134, Invalid=968, Unknown=28, NotChecked=130, Total=1260 [2022-11-20 12:19:05,242 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 353 mSDsluCounter, 5863 mSDsCounter, 0 mSdLazyCounter, 4323 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 6524 SdHoareTripleChecker+Invalid, 10668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 4323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5846 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:19:05,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 6524 Invalid, 10668 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [499 Valid, 4323 Invalid, 0 Unknown, 5846 Unchecked, 8.2s Time] [2022-11-20 12:19:05,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-11-20 12:19:05,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 779. [2022-11-20 12:19:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 515 states have (on average 1.1825242718446602) internal successors, (609), 525 states have internal predecessors, (609), 196 states have call successors, (196), 50 states have call predecessors, (196), 66 states have return successors, (409), 204 states have call predecessors, (409), 194 states have call successors, (409) [2022-11-20 12:19:05,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1214 transitions. [2022-11-20 12:19:05,365 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1214 transitions. Word has length 334 [2022-11-20 12:19:05,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:19:05,365 INFO L495 AbstractCegarLoop]: Abstraction has 779 states and 1214 transitions. [2022-11-20 12:19:05,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 6.038461538461538) internal successors, (157), 23 states have internal predecessors, (157), 14 states have call successors, (40), 7 states have call predecessors, (40), 10 states have return successors, (38), 11 states have call predecessors, (38), 14 states have call successors, (38) [2022-11-20 12:19:05,366 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1214 transitions. [2022-11-20 12:19:05,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-20 12:19:05,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:19:05,372 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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] [2022-11-20 12:19:05,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-20 12:19:05,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:19:05,592 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:19:05,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:05,592 INFO L85 PathProgramCache]: Analyzing trace with hash 919821643, now seen corresponding path program 1 times [2022-11-20 12:19:05,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:05,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370552858] [2022-11-20 12:19:05,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:05,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:05,692 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:19:05,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1825433164] [2022-11-20 12:19:05,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:05,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:19:05,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:19:05,695 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:19:05,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f610827a-9dc9-4484-93a0-613cb0823ef1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-20 12:19:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:12,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 3696 conjuncts, 483 conjunts are in the unsatisfiable core [2022-11-20 12:19:12,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:19:12,923 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 12:19:13,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-11-20 12:19:13,174 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:19:13,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 12:19:21,751 WARN L233 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 380 DAG size of output: 180 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-20 12:19:21,753 INFO L321 Elim1Store]: treesize reduction 1068, result has 27.9 percent of original size [2022-11-20 12:19:21,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 10 select indices, 10 select index equivalence classes, 2 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 68 case distinctions, treesize of input 39569 treesize of output 39602 [2022-11-20 12:19:22,773 INFO L321 Elim1Store]: treesize reduction 66, result has 39.4 percent of original size [2022-11-20 12:19:22,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 39126 treesize of output 39188